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Rubber Check valves are a cost effective mechanism to prevent the back flow of fluids and gases. There are various types available on the market, including ball and flap type check valves however, our rubber check valves are specifically designed to be durable and effective, reducing the likelihood of common maintenance problems. They are a fully passive device requiring neither maintenance nor any sources of outside power or manual assistance to operate.


ProFlex™ Style 710 Flanged Rubber Check Valve

Flanged Rubber Duckbill Check Valve

ProFlex™ Style 720

In-Line Flanged Rubber Duckbill Check Valve

ProFlex™ Style 730

Sleeved Rubber Duckbill Check Valve

ProFlex™ Style 740

Slip-in Style In-Line Rubber Duckbill Check Valve


Expansion Joints are used as a mechanism to prevent expansion from thermal and vibration energy. Proco Products, Inc.’s specially designed movement expansion joints have the ability to protect your equipment against a variety of stressors while also being, low maintenance and durable for maximum efficiency.

Proco stocks an extensive inventory of expansion joints including rubber expansion joints, PTFE expansion joints and flexible metal connectors.


Series 230 Spool-Type Wide Arch

Series 240/242 Molded Spherical
Series 271 Spool-Type Super Wide-Arch
Series 440 Molded PTFE

With the largest inventory in North America, Proco Products, Inc. has been recognized globally for the design and supply of expansion joints and check valves. Our products have been designed for efficiency and durability, helping reduce the risk of common maintenance problems. Our products are constructed of a range of materials, including rubber, PTFE and braided flexible metal. Proco caters to a vast range of industries, providing a wide range of products and services. Contact one of our expert advisers to find out how our products can benefit your business.