All Marine is proud to announce we have become the authorized dealer for Warren Rupp. For 60 years, we’ve been by your side with pumps that work as hard as you do—and people who stand behind every product. Since 1965, Warren Rupp has engineered rugged pumping solutions with a deep commitment to performance, reliability, and real-world results. It all started in Mansfield, Ohio, with two visionaries, Warren E. Rupp and Charles E. Young, Jr., who set out to build “new and different pumps.” Sixty years later, that original spark continues to guide us. Our AODD and EODD pumps move fluids, yes—but more than that, they help people solve problems, run their businesses, and push forward with confidence. Today, our products are available in over 60 countries worldwide and supported by a strong network of independent, factory-authorized distributors.
Pumps for the World’s Most Challenging Fluid Transfer Applications
Electrically Operated Double Diaphragm Pumps and Accessories
Designed to transfer the most challenging fluids efficiently, safely, and dependably, Cognito products alleviate customer pain points and deliver unparalleled reliability, ease of use, and maintenance simplicity for long-lasting customer satisfaction. Cognito electrically operated double diaphragm (EODD) pumps are smart, sustainable, and reliable.
Why Choose Cognito?
Robust & Designed to Last
EODD Pump Products
Cognito’s EODD pumps are efficient and easily monitored, providing cost savings and peace of mind. Supported by experts throughout installation, our pumps deliver reliability in harsh applications, improving energy efficiency and increasing productivity with minimal downtime.
With over 55 years delivering Air Operated Double Diaphragm pumping solutions and expertise, SANDPIPER is best-in-class for your most difficult and demanding pumping challenges.
AODD Pumps Engineered For Superior Fluid Containment
SANDPIPER Containment Duty Pumps are built for challenging environments. With a two-diaphragm design and a sealed containment chamber, these pumps keep process fluid where it belongs, even in the event of a diaphragm failure. A visual leak indicator provides early warning, and optional electronic or mechanical detection can be added when automated monitoring is required. The result? Safer operations, less downtime, and greater peace of mind.
Key Features:
Built to Protect What Matters Most
When handling hazardous or corrosive fluids, the stakes are high. SANDPIPER containment duty diaphragm pumps are designed to keep your operation safe, compliant, and productive.
Heavy Duty Ball Pumps, Metallic
Reliable Performance for Suspended, Settling & Floating Solids
When pumping fluids that contain suspended, settling, or floating solids, you need a pump that can handle the variability without clogging, stalling, or wearing out too soon. SANDPIPER’s Heavy Duty Ball Pumps, available in metallic construction, are built to meet the challenge.
These air-operated double-diaphragm (AODD) pumps are part of our Signature Series™, designed to deliver long-lasting performance in demanding environments. Built with multiple porting options and rugged materials, these pumps provide a solution to everything from sludge and slurry to abrasive or viscous fluids, keeping your process efficient and requiring less maintenance.
Key Features:
Weighted Ball Design Meets Heavy-Duty Performance
Unlike flap pumps, ball valve designs use weighted check balls to control flow. This makes the Heavy Duty Ball Pump ideal for:
Choose the Right Porting for Your Application
Heavy Duty Flap Pumps, Metallic & Non-Metallic
Engineered for the Most Demanding Solids-Handling Applications
When your application involves large, abrasive, or fast-settling solids, you need a pump that won’t clog or wear out quickly. SANDPIPER’s Heavy Duty Flap Pumps, available in both metallic and non-metallic models, are built to move even the toughest fluids with confidence and control.
These air-operated double-diaphragm (AODD) pumps are designed with a full flow-through, bottom-discharge design and swing-style flap valves that pass solids up to 3″ in diameter, keeping your system running by reducing clogs and protecting components.
Key Features:
What Makes Flap Pumps Different?
Unlike standard ball valve pumps, flap valves create a more direct path for challenging materials to flow. This makes Heavy Duty Flap Pumps especially effective when:
Standard Duty Diaphragm Pumps, Metallic & Non-Metallic
Designed for High Efficiency in Standard Duty Applications
SANDPIPER’s Standard Duty diaphragm pumps offer a balanced solution for operations that require reliable fluid handling without excessive energy use or maintenance demands. These air-operated double-diaphragm (AODD) pumps are designed to move chemicals, water, and other industrial fluids efficiently across a wide range of general-purpose and bulk transfer applications.
Both the S20 (2″) and S30 (3″) models feature an upgraded design that builds on proven performance. Engineered for higher flow and enhanced durability, these pumps help streamline operations and reduce long-term operating costs.
Key Features:
Designed To Outperform
SANDPIPER’s Standard Duty diaphragm pumps are engineered for both high output and easy, in-line maintenance, helping you move more with less air and less disruption. The S20 delivers up to 198 gpm, outperforming similar 2″ pumps by as much as 32%. The S30 pushes capacity further to 285 gpm while requiring up to 56% less air, offering 2.7 times greater air economy than comparable options. These performance gains help reduce strain on compressed air systems and can lower annual operating costs by up to 67%.
To further reduce downtime, our standard duty pumps include SANDPIPER’s exclusive ESADS+Plus Air Distribution System, which allows fast access to the air valve components without removing the pump from service.
WATCH AN AODD PUMP IN ACTION
¼” (6MM) AODD PUMP
Versamatic’s ¼” (6mm) air-operated double-diaphragm (AODD) pumps were engineered with original equipment manufacturers (OEMs) in mind and provide tremendous system flexibility. The ¼” is one of the quietest and most compact AODD pumps in its class.
The ¼” (6mm) AODD pump features multiple porting position options with male and female threaded connections. This pump is available in conductive options for explosive or flammable environments.
3⁄8” (10MM) AODD PUMP
Versamatic’s ⅜” (10mm) air-operated double-diaphragm (AODD) pumps can dispense up to 7 gpm (26 lpm), delivering best-in-class performance. Available in polypropylene and PVDF (Kynar®) wetted materials of construction, the ⅜” AODD pump offers tremendous versatility and can be mounted upright, sideways and even inverted to adapt to your application.
½” (13MM) AODD PUMPS
Designed to be ready on demand, Versamatic’s ½” (13mm) air-operated double-diaphragm (AODD) pumps utilize a patented air valve system to deliver consistent on/off reliability while maintaining superior efficiency. Choose between our bolted metal and bolted plastic ½” AODD pumps.
The ½” (13mm) bolted plastic AODD pump offers installation flexibility, allowing the unit to easily fit into existing installations.
Visit Warren Rupp at: https://warrenruppinc.com/
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