Whipps, Inc. - Leading Manufacturer of Custom Water Control Equipment, Offering High-Performance Gates, Stop Logs, Stop Gates, and Flow Control Solutions for Water Treatment, Irrigation, Mining, Hydroelectric, Flood Control, and More

Whipps, Inc. is the market leader for high quality custom fabricated gates and water control equipment.

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Stop Logs

Stop Logs

Reliable Stop Logs for Water Containment
Made in the USA since 1977

General Information

Looking for a modern alternative to traditional timber stop logs? The 500 Series Aluminum Stop Logs from Whipps, Inc. deliver lightweight handling, precise sealing, and long-term durability in ponds, tanks, channels, and other flow control applications. In continuous production since 1980, these stop logs represent a proven, cost-effective solution that eliminates the dimensional instability, leakage, and sourcing challenges associated with timber designs.

Each stop log is fabricated from 6061-T6 aluminum and fitted with UHMW seat/seals, ensuring predictable leakage rates of just 0.05 gallons per minute per linear foot of wetted seal. Logs are easy to install and remove, making them especially practical in applications where adjustments are infrequent. Whipps also offers multiple mounting arrangements and custom-engineered options, including corner stop log systems that use guideposts to extend or pivot.

The 500 Series includes three models tailored to different site conditions:

  1. Model 509 – An aluminum stop log with an open channel design, ideal for narrower openings and moderate depths. Lightweight construction makes it especially easy to handle when operations are occasional.

  2. Model 510 – A 6-inch-thick open channel log that delivers additional strength for wider channels and deeper water, while still maintaining manageable handling weight.

  3. Model 511 – An 8-inch-thick log with a closed channel (square pipe) design, engineered for maximum strength and stiffness. Best suited for large openings and higher water depths where extra structural rigidity is critical.

500 Series: Aluminum Stop Logs Application Chart

With aluminum construction, precision machining, and decades of proven field performance, Whipps stop logs combine strength, efficiency, and reliability. From small pond applications to large-scale channel installations, the 500 Series Aluminum Stop Logs are a trusted choice for dependable, long-lasting water control.

Product Advantages

Quality Assurance

The stop log, guide frames/grooves, and lifter shall be manufactured by a company with 10 or more years of experience in successfully designing and manufacturing low leakage stop logs under similar conditions. All welds will be executed by welders with AWS certification.

Performance

The stop logs maximum allowable leakage shall be 0.05 gallons per minute per linear foot of the wetted perimeter, regardless of the direction of the unbalanced head.

Technical Information

In addition to the submittal information required by other sections of these specifications, the stop log manufacturer may be required to submit design calculations and supporting data for all logs. The supplementary information depicts stresses, loads, and deflection for critical parts under design head conditions.

Stop Logs

Crafted from 5/16” thick aluminum (Alloy 6061-T6) extrusions. Maximum bending stress shall not exceed 7600 psi at the maximum head. Each stop log will be designed to be identical and stacked in any order. Resilient lip-type seals are attached along the sides and across the bottom with stainless steel fasteners for easy inspection and replacement. An engraved aluminum tag is welded to each log, providing information about installation location and size of the log.

Stop Log Groove

Stop log grooves and frames are constructed of extruded aluminum (Alloy 6061-T6), with stainless steel designs available. The frame is comprised of two grooves and an invert member. Stainless steel fasteners are supplied for mounting to a wall or to an existing cannel. The invert member is designed to minimize flow interference along the bottom of the channel.

Stop Log Lifter

The lifter is constructed using aluminum or stainless steel, featuring UHMW guide bars and stainless steel fasteners. Capable of both installing and removing stop logs, the lifter easily latches and unlatches with a lanyard operated by personnel.

Painting

All aluminum in contact with concrete shall receive a heavy shop coat of bitumastic paint.

Anodizing (optional)

All aluminum components can be anodized in accordance with Aluminum Association Specification AA-C22-A41. The anodizing shall be 0.7 mm thick with a nickel acetate sealer.

3D Model of 509 Aluminum Stop Log

509 – Aluminum Standard Stop Log Gate

The Whipps Model 509 Aluminum Stop Log is a lightweight stop log with an open channel design, ideal for narrower channels and moderate water depths. Its corrosion-resistant aluminum construction ensures long-term durability while remaining easy to handle, especially in applications where installation or removal is infrequent. Engineered for dependable sealing and cost-effective performance, the 509 stop logs provides a reliable solution for everyday water control needs.
READ MORE
3D Model of 510 Aluminum Stop Log

510 – Aluminum Stop Log Gate

The Whipps Model 510 Aluminum Stop Log provides greater strength than the 509 with a 6-inch-thick open channel design, making it well-suited for wider channels and deeper water. It balances rugged durability with manageable handling weight, offering dependable sealing and long-lasting performance.
READ MORE
3D Model of 511 Aluminum Stop Log

511 – Aluminum Heavy-Duty Stop Log Gate

The Whipps Model 511 Aluminum Stop Log is built for the most demanding applications, featuring a closed channel (square pipe) design for maximum strength and stiffness. Ideal for large channels and higher water depths, the 511 delivers unmatched structural integrity, reliable sealing, and long service life.
READ MORE
3D Model of 529 Stainless Steel Stop Log

529 – Stainless Steel Stop Log Gate

Model 529 Stainless Steel Stop Logs from Whipps, Inc. are engineered for the toughest water control applications, offering exceptional strength, corrosion resistance, and long-term durability. Featuring stainless steel construction with UHMW seat/seals, the 529 provides reliable sealing with a maximum leakage rate of only 0.05 gallons per minute per linear foot of wetted seal.
READ MORE

500 Series Stop Log Videos

Welcome to Whipps, Inc.'s 500 Series breakdown. Today we are looking at the water control equipment known as stop logs. Stop logs feature a modular design for easy installation and storage when not in use. There is an edge with a UMHW seal that prevent flooding in ponds, infrastructure and water treatment plants. 

Our stop logs are made from aluminum or stainless steel. Premium material for long periods of submergence and strong against high pressures. What are stop logs, and why are they essential in emergency water control systems? A trusted solution for temporarily blocking or redirecting water flow in channels, treatment facilities, and flood-prone areas.

Each stop log is manufactured in the USA using high-quality aluminum or stainless steel, chosen for their strength, low maintenance, and resistance to corrosion in demanding environments. Whether you're preparing for seasonal flooding, performing equipment maintenance, or managing water levels in a treatment facility, stop logs provide flexible and reliable flow isolation.

These modular water control components are easy to handle and deploy, stacking within channel guides to hold back water at specific elevations. When installed properly, they offer excellent sealing performance and can withstand high pressures — making them an essential part of any emergency preparedness or maintenance toolkit.

At Whipps, Inc., we custom-fabricate stop logs to meet your exact specifications, ensuring a precise fit and reliable performance for years to come. Want to learn more about stop logs, how they work, or how they can support your water management system? Visit our website or reach out to our team today.


📞 Phone: +1 (978) 249-7924
📧 Contact a Sales Rep: www.whipps.com/sales-representatives/
🌐 Learn more: www.whipps.com

🔔 Like, comment, and subscribe for more behind-the-scenes videos, product walkthroughs, and insights from the Whipps factory floor.

Welcome to Whipps, Inc.'s 500 Series breakdown. Today we are looking at the water control equipment known as stop logs. Stop logs feature a modular design for easy installation and storage when not in use. There is an edge with a UMHW seal that prevent flooding in ponds, infrastructure and water treatment plants.

Our stop logs are made from aluminum or stainless steel. Premium material for long periods of submergence and strong against high pressures. What are stop logs, and why are they essential in emergency water control systems? A trusted solution for temporarily blocking or redirecting water flow in channels, treatment facilities, and flood-prone areas.

Each stop log is manufactured in the USA using high-quality aluminum or stainless steel, chosen for their strength, low maintenance, and resistance to corrosion in demanding environments. Whether you're preparing for seasonal flooding, performing equipment maintenance, or managing water levels in a treatment facility, stop logs provide flexible and reliable flow isolation.

These modular water control components are easy to handle and deploy, stacking within channel guides to hold back water at specific elevations. When installed properly, they offer excellent sealing performance and can withstand high pressures — making them an essential part of any emergency preparedness or maintenance toolkit.

At Whipps, Inc., we custom-fabricate stop logs to meet your exact specifications, ensuring a precise fit and reliable performance for years to come. Want to learn more about stop logs, how they work, or how they can support your water management system? Visit our website or reach out to our team today.


📞 Phone: +1 (978) 249-7924
📧 Contact a Sales Rep: www.whipps.com/sales-representatives/
🌐 Learn more: www.whipps.com

🔔 Like, comment, and subscribe for more behind-the-scenes videos, product walkthroughs, and insights from the Whipps factory floor.

YouTube Video UEw5WUlhZWczMHFQSWNOSGN1bWQzOFdRdEVMYVVYUm1CNi4xMkVGQjNCMUM1N0RFNEUx

500 Series: What Are Stop Logs? #whippsinc #stoplogs

Just received your stop logs or planning an install? Learn how to handle, install, and maintain your 500 Series Stop Logs safely and effectively with our latest training guide. From proper lifting techniques to leak testing and storage, we cover everything you need to know for smooth operation.

Take an inside look at how Whipps, Inc. stop logs are designed, built, and used to keep water under control. From precision manufacturing in our U.S. facility to real-world applications in water treatment plants, canals, dams, and stormwater systems, this video shows the versatility and reliability of our 500 Series Stop Logs.

You’ll see how stop logs are fabricated from durable aluminum or stainless steel, sealed with UHMW edges, and engineered for everything from low-pressure irrigation channels to high-head flood control structures. We walk through the key models, including lightweight options for easy handling, rugged designs for higher pressure, and bulkhead-style logs with built-in slide gates for large-scale isolation.

Alongside these product insights, the video also covers safe handling practices, proper installation techniques, and leak testing procedures. Learn how to set stop logs correctly for a secure seal, how to test and troubleshoot for leaks, and the best way to remove, clean, and store your equipment seasonally. With tips on inspection, seal care, and troubleshooting, you’ll understand exactly how to extend the service life and performance of your stop logs.

Whether you’re a plant operator, engineer, or contractor, this video is your complete guide to the manufacturing, operation, and maintenance of Whipps 500 Series Stop Logs. With tight tolerances, advanced material options, and a fit and finish that only comes from hands-on craftsmanship, we bring your project requirements to life with purpose-built precision.

📞 Phone: +1 (978) 249-7924
📧 Sales Representatives: www.whipps.com/sales-representatives/
🌐 Explore More: www.whipps.com

🔔 Don’t forget to like, comment, and subscribe to see more behind-the-scenes footage, product builds, installation tips, and event coverage from the front lines of American manufacturing.

Just received your stop logs or planning an install? Learn how to handle, install, and maintain your 500 Series Stop Logs safely and effectively with our latest training guide. From proper lifting techniques to leak testing and storage, we cover everything you need to know for smooth operation.

Take an inside look at how Whipps, Inc. stop logs are designed, built, and used to keep water under control. From precision manufacturing in our U.S. facility to real-world applications in water treatment plants, canals, dams, and stormwater systems, this video shows the versatility and reliability of our 500 Series Stop Logs.

You’ll see how stop logs are fabricated from durable aluminum or stainless steel, sealed with UHMW edges, and engineered for everything from low-pressure irrigation channels to high-head flood control structures. We walk through the key models, including lightweight options for easy handling, rugged designs for higher pressure, and bulkhead-style logs with built-in slide gates for large-scale isolation.

Alongside these product insights, the video also covers safe handling practices, proper installation techniques, and leak testing procedures. Learn how to set stop logs correctly for a secure seal, how to test and troubleshoot for leaks, and the best way to remove, clean, and store your equipment seasonally. With tips on inspection, seal care, and troubleshooting, you’ll understand exactly how to extend the service life and performance of your stop logs.

Whether you’re a plant operator, engineer, or contractor, this video is your complete guide to the manufacturing, operation, and maintenance of Whipps 500 Series Stop Logs. With tight tolerances, advanced material options, and a fit and finish that only comes from hands-on craftsmanship, we bring your project requirements to life with purpose-built precision.

📞 Phone: +1 (978) 249-7924
📧 Sales Representatives: www.whipps.com/sales-representatives/
🌐 Explore More: www.whipps.com

🔔 Don’t forget to like, comment, and subscribe to see more behind-the-scenes footage, product builds, installation tips, and event coverage from the front lines of American manufacturing.

YouTube Video UEw5WUlhZWczMHFQSWNOSGN1bWQzOFdRdEVMYVVYUm1CNi4wMTcyMDhGQUE4NTIzM0Y5

How Stop Logs Control Water Flow | Whipps 500 Series Explained

Safety First: Proper Handling of Stop Logs

When working with water control equipment, safety should never be an afterthought. In this video, we cover essential safety tips for installing and removing Whipps 500 Series Stop Logs, ensuring your team stays protected on the job.

From personal protective gear like gloves, steel-toed boots, and hi-vis vests to safe lifting practices and jobsite awareness, every step matters. We also introduce optional aluminum and stainless-steel lifters that make the process safer and more efficient. Whether you're working at a dam, canal, or pump station, a safety-first mindset helps prevent injuries and prolong equipment life.

Keep your operations smooth and your crew safe with these quick, effective handling tips. Reliable, durable, and made to order, the 500 Series is built to perform where it counts. Whether you're managing low-head flow with our lightweight 509 and 510 models or tackling high-pressure applications with the robust 511 and 529, there's a stop log designed for your challenge.

For bulkhead logs, it’s important to align the built-in slide gate before placement. And when securing the top log, avoid overtightening; instead simply make sure it’s firmly in place. These small steps make a big difference in ensuring long-term efficiency and reducing bypass flow.

—

🔔 Subscribe for more behind-the-scenes engineering, product showcases, and real-world water control applications.

📞 Contact Sales: +1 (978) 249-7924
📧 Get a Custom Quote: www.whipps.com/sales-representatives
🌐 Explore the 500 Series: www.whipps.com/our-products/500-series-stop-logs-whipps-water-control-equipment/

Safety First: Proper Handling of Stop Logs

When working with water control equipment, safety should never be an afterthought. In this video, we cover essential safety tips for installing and removing Whipps 500 Series Stop Logs, ensuring your team stays protected on the job.

From personal protective gear like gloves, steel-toed boots, and hi-vis vests to safe lifting practices and jobsite awareness, every step matters. We also introduce optional aluminum and stainless-steel lifters that make the process safer and more efficient. Whether you're working at a dam, canal, or pump station, a safety-first mindset helps prevent injuries and prolong equipment life.

Keep your operations smooth and your crew safe with these quick, effective handling tips. Reliable, durable, and made to order, the 500 Series is built to perform where it counts. Whether you're managing low-head flow with our lightweight 509 and 510 models or tackling high-pressure applications with the robust 511 and 529, there's a stop log designed for your challenge.

For bulkhead logs, it’s important to align the built-in slide gate before placement. And when securing the top log, avoid overtightening; instead simply make sure it’s firmly in place. These small steps make a big difference in ensuring long-term efficiency and reducing bypass flow.



🔔 Subscribe for more behind-the-scenes engineering, product showcases, and real-world water control applications.

📞 Contact Sales: +1 (978) 249-7924
📧 Get a Custom Quote: www.whipps.com/sales-representatives
🌐 Explore the 500 Series: www.whipps.com/our-products/500-series-stop-logs-whipps-water-control-equipment/

YouTube Video UEw5WUlhZWczMHFQSWNOSGN1bWQzOFdRdEVMYVVYUm1CNi41MjE1MkI0OTQ2QzJGNzNG

Proper Handling of Stop Logs

Meet the 500 Series Stop Logs: Versatile Solutions for Flow Control

From small-scale isolation to high-pressure demands, the Whipps 500 Series Stop Logs are engineered to meet a wide range of water control needs. In this video, we introduce the different models within the series and highlight the advantages of each.

Whether you're managing low-head flow with our lightweight 509 and 510 models or tackling high-pressure applications with the robust 511 and 529, there's a stop log designed for your challenge. Need built-in versatility? Our bulkhead-style logs come with integrated slide gates. Ideal for maintenance shutdowns and system isolation in larger facilities.

Experiencing leaks or difficulty during installation? Misaligned logs, debris in the frame, or even cold weather can cause performance problems. We'll walk you through how to clear the frame, re-seat the logs properly, and apply silicone lubricant to restore smooth operation. Reliable, durable, and made to order, the 500 Series is built to perform where it counts.

Whether you're preparing for seasonal use or permanent installation, this guide will help you get the most out of your Whipps stop logs. Installing stop logs correctly is key to minimizing leakage and maximizing performance.

Removing the stop logs from the top down, cleaning and inspecting each one, and storing them upright in the provided rack helps maintain longevity and efficiency. A quick inspection now can prevent costly downtime later. Watch more to learn how to keep your water control systems operating at their best.

—

🔔 Subscribe for more behind-the-scenes engineering, product showcases, and real-world water control applications.

📞 Contact Sales: +1 (978) 249-7924
📧 Get a Custom Quote: www.whipps.com/sales-representatives
🌐 Explore the 500 Series: www.whipps.com/our-products/500-series-stop-logs-whipps-water-control-equipment/

Meet the 500 Series Stop Logs: Versatile Solutions for Flow Control

From small-scale isolation to high-pressure demands, the Whipps 500 Series Stop Logs are engineered to meet a wide range of water control needs. In this video, we introduce the different models within the series and highlight the advantages of each.

Whether you're managing low-head flow with our lightweight 509 and 510 models or tackling high-pressure applications with the robust 511 and 529, there's a stop log designed for your challenge. Need built-in versatility? Our bulkhead-style logs come with integrated slide gates. Ideal for maintenance shutdowns and system isolation in larger facilities.

Experiencing leaks or difficulty during installation? Misaligned logs, debris in the frame, or even cold weather can cause performance problems. We'll walk you through how to clear the frame, re-seat the logs properly, and apply silicone lubricant to restore smooth operation. Reliable, durable, and made to order, the 500 Series is built to perform where it counts.

Whether you're preparing for seasonal use or permanent installation, this guide will help you get the most out of your Whipps stop logs. Installing stop logs correctly is key to minimizing leakage and maximizing performance.

Removing the stop logs from the top down, cleaning and inspecting each one, and storing them upright in the provided rack helps maintain longevity and efficiency. A quick inspection now can prevent costly downtime later. Watch more to learn how to keep your water control systems operating at their best.



🔔 Subscribe for more behind-the-scenes engineering, product showcases, and real-world water control applications.

📞 Contact Sales: +1 (978) 249-7924
📧 Get a Custom Quote: www.whipps.com/sales-representatives
🌐 Explore the 500 Series: www.whipps.com/our-products/500-series-stop-logs-whipps-water-control-equipment/

YouTube Video UEw5WUlhZWczMHFQSWNOSGN1bWQzOFdRdEVMYVVYUm1CNi4wOTA3OTZBNzVEMTUzOTMy

Meet the 500 Series Stop Logs

Aluminum Stop Log Removal & Installation | 500 Series Gate + Crane Lifter Demo | Whipps, Inc. USA
Experience the precision and practicality of the Whipps, Inc. 500 Series Aluminum Stop Log System in action. In this video, you’ll see a Whipps-engineered lifter being used to lift, place, and remove aluminum stop logs, with help from a crane-mounted chain system and a manual yellow rope trigger to engage the hook mechanism.
This hands-on demonstration captures how ease of use, structural integrity, and operator safety come together in one of the most relied-upon solutions for flood control, flow isolation, pond management, and stormwater retention systems across the U.S.
🛠 What You’re Watching:
This video shows:
The aluminum stop logs being securely lifted one by one
Use of a Whipps lifter, designed for fast hook engagement and log stability
Chain suspension from a crane, allowing safe vertical movement
A yellow rope control line, which activates the mechanical hook system for easy placement or release
Every detail has been engineered for field safety, operator control, and efficient deployment, even under demanding conditions.
🌊 Why Stop Logs Matter
Stop logs are adjustable, removable barriers used to control water levels in channels, tanks, reservoirs, ponds, floodways, or wastewater treatment facilities. They are:
Perfect for temporary isolation of flow
Easy to stack or remove
Available in multiple widths, heights, and seat configurations
Made to meet tight tolerance seating surfaces for watertight performance
At Whipps, we offer aluminum and stainless steel stop logs with custom options for frames, seals, lifting systems, and embedment details based on your site-specific needs.
📍 Engineered in Massachusetts. Trusted Nationwide.
Located in Athol, Massachusetts, Whipps, Inc. has been manufacturing water control equipment in the USA since 1977. Our 500 Series aluminum stop logs are lightweight, corrosion-resistant, and built for longevity. From design to delivery, everything is done in-house, giving you full confidence in product quality and performance.
💡 Our Stop Log Systems Are Ideal For:
Flood control and storm surge protection
Water level regulation in retention ponds
Channel isolation for maintenance and inspection
Hydroelectric intake control
Wastewater and water treatment facilities
We supply custom-engineered solutions for municipalities, contractors, engineers, and water districts across North America.
📞 Let’s Talk Water Control
Interested in adding stop logs to your project? Need help determining your flow control setup?
📧 Email: info@whipps.com
📞 Phone: +1 (978) 249-7924
🌐 Visit: https://www.whipps.com
We’ll work with you to deliver a complete solution—CAD files, submittals, spec sheets, and build-to-fit products with long-term reliability.
🔩 Whipps, Inc. Water Control Equipment Includes:
Sluice Gates / Slide Gates
Stop Logs & Frames
Telescoping Valves
Shear Gates
Flap Gates
Wall Thimbles
Embedded Mounting Frames
Custom Flow Control Devices
Whether you need corrosion-resistant equipment for harsh environments, or lightweight removable barriers for temporary use, Whipps has the engineering and support to deliver.

Aluminum Stop Log Removal & Installation | 500 Series Gate + Crane Lifter Demo | Whipps, Inc. USA
Experience the precision and practicality of the Whipps, Inc. 500 Series Aluminum Stop Log System in action. In this video, you’ll see a Whipps-engineered lifter being used to lift, place, and remove aluminum stop logs, with help from a crane-mounted chain system and a manual yellow rope trigger to engage the hook mechanism.
This hands-on demonstration captures how ease of use, structural integrity, and operator safety come together in one of the most relied-upon solutions for flood control, flow isolation, pond management, and stormwater retention systems across the U.S.
🛠 What You’re Watching:
This video shows:
The aluminum stop logs being securely lifted one by one
Use of a Whipps lifter, designed for fast hook engagement and log stability
Chain suspension from a crane, allowing safe vertical movement
A yellow rope control line, which activates the mechanical hook system for easy placement or release
Every detail has been engineered for field safety, operator control, and efficient deployment, even under demanding conditions.
🌊 Why Stop Logs Matter
Stop logs are adjustable, removable barriers used to control water levels in channels, tanks, reservoirs, ponds, floodways, or wastewater treatment facilities. They are:
Perfect for temporary isolation of flow
Easy to stack or remove
Available in multiple widths, heights, and seat configurations
Made to meet tight tolerance seating surfaces for watertight performance
At Whipps, we offer aluminum and stainless steel stop logs with custom options for frames, seals, lifting systems, and embedment details based on your site-specific needs.
📍 Engineered in Massachusetts. Trusted Nationwide.
Located in Athol, Massachusetts, Whipps, Inc. has been manufacturing water control equipment in the USA since 1977. Our 500 Series aluminum stop logs are lightweight, corrosion-resistant, and built for longevity. From design to delivery, everything is done in-house, giving you full confidence in product quality and performance.
💡 Our Stop Log Systems Are Ideal For:
Flood control and storm surge protection
Water level regulation in retention ponds
Channel isolation for maintenance and inspection
Hydroelectric intake control
Wastewater and water treatment facilities
We supply custom-engineered solutions for municipalities, contractors, engineers, and water districts across North America.
📞 Let’s Talk Water Control
Interested in adding stop logs to your project? Need help determining your flow control setup?
📧 Email: info@whipps.com
📞 Phone: +1 (978) 249-7924
🌐 Visit: https://www.whipps.com
We’ll work with you to deliver a complete solution—CAD files, submittals, spec sheets, and build-to-fit products with long-term reliability.
🔩 Whipps, Inc. Water Control Equipment Includes:
Sluice Gates / Slide Gates
Stop Logs & Frames
Telescoping Valves
Shear Gates
Flap Gates
Wall Thimbles
Embedded Mounting Frames
Custom Flow Control Devices
Whether you need corrosion-resistant equipment for harsh environments, or lightweight removable barriers for temporary use, Whipps has the engineering and support to deliver.

YouTube Video UEw5WUlhZWczMHFQSWNOSGN1bWQzOFdRdEVMYVVYUm1CNi4yODlGNEE0NkRGMEEzMEQy

3D 500 Series Stop Log & Lifter #whippsinc

STOP GATES

Best Stop Gate For Minimal Leakage
Made in the USA since 1977

General Information

The 500 Series Stop Gates from Whipps, Inc. are a dependable, high-performance solution for water containment in ponds, tanks, channels, and other flow control structures. Designed for strength, reliability, and ease of use, these stop gates are a proven choice for operators who need effective water management without the complexity of larger gate systems. Built with robust aluminum or stainless steel construction, the 500 Series delivers long-lasting durability while remaining lightweight and easy to handle.

Our stop gates features precision-fabricated slides equipped with two welded handles, allowing operators to lift and position the gate manually. Thanks to its lightweight design, the gate can typically be installed or removed by one or two workers, making it well suited for applications where the gate is inserted and removed only occasionally. When not in use, the gate can be conveniently stored until needed again, ensuring flexible and efficient operation.

Whipps stop gates are engineered for durability and reliable sealing. All models incorporate ultra-high molecular weight polyethylene (UHMW) seat/seals, which provide a secure closure with minimal leakage of 0.10 gallons per minute per linear foot of wetted seal. This level of performance ensures consistent containment across a wide range of flow conditions while minimizing maintenance requirements. For added versatility, Whipps also offers stainless steel stop gates, designed for sites where additional strength and corrosion resistance are required to handle more demanding environments.

The aluminum models (501, 503, and 503-C) offer the ideal balance of rugged construction, corrosion resistance, and ease of handling. They are designed to perform reliably across a variety of flow control applications, from municipal systems and treatment plants to industrial facilities and irrigation structures. Combined with Whipps’ expertise in custom fabrication, the 500 Series Aluminum Stop Gates can be tailored to meet the exact needs of your installation, whether standard or specialized.

The stainless steel models (521, 523, and 523-C) deliver maximum strength, corrosion resistance, and reliable sealing performance for demanding applications. The 521 model is designed for permanent embedded installations, the 523 model offers flexible mounting options and other customizations, and the 523-C model provides a dedicated channel-mounted design for ease of operation and stability. Backed by Whipps’ precision fabrication and custom engineering, these stainless steel stop gates ensure dependable performance across municipal, industrial, and treatment facility installations.

Whipps, Inc.’s 500 Series Bulkhead Gates are built for heavy-duty performance in high head conditions and large waterways, combining rugged, reinforced construction with precision engineering. Available in aluminum (Models 519 and 519-C) or stainless steel (Model 529), these gates feature large extruded slides, resilient lip-type seals for reliable low-leakage performance, and frames designed with two grooves and an invert member to minimize flow interference. The 519 offers a durable aluminum design, the 519-C provides a channel-mounted aluminum option, and the 529 delivers maximum strength and corrosion resistance in stainless steel—making the series a versatile, long-lasting solution for demanding municipal, industrial, and treatment facility applications.

Supported by decades of engineering experience and precision manufacturing, Whipps, inc. 500 Series provide a reliable, cost-effective solution for water management. With their lightweight design, durable sealing system, and proven performance, our stop gates deliver the quality and dependability customers have come to expect from Whipps, Inc.

Product Advantages

Quality Assurance

The stop gate will be manufactured by a company with 10 years or more of successful experience in designing and producing low-leakage stop gates under similar design conditions. All welds will be executed by welders with AWS certification.

Performance

The maximum allowable leakage for the stop gates shall be 0.10 gallons per minute per linear foot of the wetted perimeter, regardless of the direction of the unbalanced head.

Technical Information

In addition to the submittal information required by other sections of these specifications, the stop gate manufacturer may need to submit design calculations and supporting data for all gates, illustrating stresses, loads, and deflection for critical parts under design head conditions. At a  minimum, theses shall include operating load, slide deflection, slide bending stress, and shear stress in stiffener welds.

Frame

Constructed of 1/4” or thicker extruded aluminum (Alloy 6061-T6) incorporating ultra high molecular weight polymer (UMHW) seat/seal facing on both the upstream and downstream sides of the slide. Each seat/seal is shaped to provide two bearing surfaces and two sealing edges. The gate side guides and invert shall weigh a minimum of 4lbs/ft for wall mounted and 3lbs/ft for embedded installation. The gate invert shall include a removable neoprene seal. Seals attached to the slide will not be acceptable. All necessary assembly and anchor bolts shall be type 304 (type 316 optional) stainless steel and provided by the gate manufacturer.

Slide

The slide shall be minimum thickness of 1/4” aluminum plate (Alloy 6061-T6) reinforced with stiffeners as required ensure that at the design head, the slide will not deflect more than 1/360 of its width and stress is limited to 7600 psi. Slide stiffeners shall have a minimum weight of 2.5lbs/ft. The slide shall be equipped with a cast aluminum offset lifting handle. Gates wider than 36 inches shall be provided with dual lifting handles.

Painting

All aluminum in contact with concrete shall receive a heavy shop coat of bitumastic paint.

Anodizing (optional)

All aluminum components can be anodized in accordance with Aluminum Association Specification AA-C22-A41. The anodizing shall be 0.7 mm thick with a nickel acetate sealer.

3D Model of 521 Stainless Steel Embedded Stop Gate

501 – Aluminum Embedded Stop Gate

The Whipps 501 Aluminum Stop Gate is designed for embedded mounting, providing a secure and permanent fit within concrete structures. Its lightweight aluminum slide with welded handles makes it easy to operate while ensuring reliable, long-lasting water containment.
READ MORE
3D Model of 523 Stainless Steel Wall Mounted Stop Gate

503 – Aluminum Standard Stop Gate

The Whipps 503 Aluminum Stop Gate is a wall-mounted design that offers versatility and dependable sealing for a wide range of applications. With rugged aluminum construction and UHMW seat/seals, it delivers strength, corrosion resistance, and consistent performance.
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3D Model of 523-C Stainless Steel Channel Mounted Stop Gate

503-C – Aluminum Channel Mounted Stop Gate

The Whipps 503-C Aluminum Stop Gate is built for channel-mounted installations, making it ideal for open-channel systems. Its lightweight, durable construction ensures easy handling and effective water control with minimal leakage.
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3D Model of 501 Aluminum Embedded Stop Gate

521 – Stainless Steel Embedded Stop Gate

The 521 Stainless Steel Stop Gate is an embedded stainless steel design that provides long-term, low-leakage performance in demanding environments. Its rugged construction and welded handles allow for dependable installation and removal.
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3D Model of 503 Aluminum Wall Mounted Stop Gate

523 – Standard Stainless Steel Stop Gate

The 523 Stainless Steel Stop Gate is a versatile standard model, available with various customizations. Built for durability and ease of handling, it delivers reliable water control across a wide range of applications.
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3D Model of 503-C Aluminum Channel Mounted Stop Gate

523–C – Channel Mounted Stainless Steel Stop Gate

The 523-C Stainless Steel Stop Gate is a channel-mounted stainless steel design engineered for stability and smooth operation. Easy to install and remove, it ensures tight sealing performance with the strength of stainless steel.
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500 Series Stop Gate Videos

In this video, we take a closer look at the Whipps 500 Series Stop Gates — a simple, effective, and reliable solution for isolating water flow in municipal, industrial, and environmental systems.

Watch as operators easily lift and place these lightweight, rigid panels into position. Designed for manual installation and removal, each gate fits seamlessly into its channel frame, making it the ideal choice for sites that require temporary flow stoppage without complex tools or equipment.

Crafted from high-quality aluminum or stainless steel, our stop gates provide a strong yet manageable design. Precision-fabricated handles and durable UHMW seat seals deliver tight, low-leakage performance even in challenging conditions.

You’ll see both material options in action:

501–503 Series — Lightweight aluminum for low-pressure or remote locations

521–523 Series — Rugged stainless steel for high-pressure or corrosive environments

After the job is complete, the gate is simply lifted out and stored for future use — making the 500 Series a clean, efficient, and dependable part of any water management operation.

Whipps, Inc. — precision-built solutions that work when it matters most.

💧 Learn more about our 500 Series Stop Gates at whipps.com

🔔 Like, comment, and subscribe for more behind-the-scenes content, product features, and real-world engineering from Whipps, Inc.

📞 Phone: +1 (978) 249-7924
🌐 Learn more: www.whipps.com

In this video, we take a closer look at the Whipps 500 Series Stop Gates — a simple, effective, and reliable solution for isolating water flow in municipal, industrial, and environmental systems.

Watch as operators easily lift and place these lightweight, rigid panels into position. Designed for manual installation and removal, each gate fits seamlessly into its channel frame, making it the ideal choice for sites that require temporary flow stoppage without complex tools or equipment.

Crafted from high-quality aluminum or stainless steel, our stop gates provide a strong yet manageable design. Precision-fabricated handles and durable UHMW seat seals deliver tight, low-leakage performance even in challenging conditions.

You’ll see both material options in action:

501–503 Series — Lightweight aluminum for low-pressure or remote locations

521–523 Series — Rugged stainless steel for high-pressure or corrosive environments

After the job is complete, the gate is simply lifted out and stored for future use — making the 500 Series a clean, efficient, and dependable part of any water management operation.

Whipps, Inc. — precision-built solutions that work when it matters most.

💧 Learn more about our 500 Series Stop Gates at whipps.com

🔔 Like, comment, and subscribe for more behind-the-scenes content, product features, and real-world engineering from Whipps, Inc.

📞 Phone: +1 (978) 249-7924
🌐 Learn more: www.whipps.com

YouTube Video UEw5WUlhZWczMHFQTHhtY1pwdHVKSHlDYUNueGdvZ2VzdS4yODlGNEE0NkRGMEEzMEQy

Stop Gates | Whipps, Inc.

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Did you know that Whipps, INC. offers custom solutions for almost any industry in need of industry standard water control equipment products? If you have a specific need, any questions or are not sure where to look, We'd urge you reach out to us.
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