YOUR FULL SERVICE SHOP FOR ALL WATER AND WASTEWATER PIPING NEEDS

YOUR FULL SERVICE SHOP FOR ALL WATER AND WASTEWATER PIPING NEEDS

AWWA BUTTERFLY VALVES

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Made with US and international specifications.

BUTTERFLY VALVES

Cohen’s AWWA Butterfly Valves are compliant to the AWWA C516 and C504 standards. They are often utilized as clean water and gas shutoff. The shaft of the valves is disc-shaped and has stainless steel edges with seals that are self-compensating. The valves come in two different sizes: the small valves are 3-20” and the larger ones are 24-144. Each valve size has its respective features. Small valves contain built-in body seats along with disc-locating features that prevent any leakages and extend seat life. On the other hand, large valves have a seat that is adjustable and replaceable. Apart from that, the latter features a disc structure that is not hollow, and the rubber seat is locked in the valve body using an epoxy wedge. Butterfly valves are a quarter-turn type of valves. 

The water flows out by turning the handle or actuator of the valve by 90 degrees. The body design of the valve includes a round-shaped disk called end packings. The disc has holes all over for the screw bolts to connect directly to the pipe. These valves have several advantages compared to other valve types. Aside from its effortless operation, it can easily start, stop and regulate the water flow quickly due to the rotating small disc (the seat) found on the center of the end packings. Moreover, the rotating disc itself prevents water leakage as it seals the entire area when in a fully closed position. Its thin body design is practically made for large flows and low-pressure applications and affordability are the main reasons why most people prefer such valves. Nowadays, different types of valves that cater to various usages and water pressures are being manufactured and sold in markets.

AWWA BUTTERFLY VALVE WORKING CONDITIONS

Butterfly valves are expected to work excellently without the need of monitoring water flow even during the worst situations. This is possible due to the edges of the valve discs which are made of stainless steel. In addition, its length and precision are what makes it suitable for industrial activities.

The body of the butterfly valve is composed of the ASTM A536 65-45-12 stainless steel which passes or surpasses the AWWA C504 requirements for the ideal strength of the material. For the thickness, diameter and drilling methods of flanges follow the ANSI B16.1 Class 125 standards while the mechanical joint ends meet the needed ANSI/AWWA C111/A21.11 specifications.

AWWA butterfly valves are assessed to have met the AWWA C504 standards. Switching the valves is done simply using the handle or manual gear operators with the optional inclusion of the pneumatic or electric handles or actuators based on the requirements. Don’t hesitate to call your local salesman for assistance in choosing the right valve size and other properties.