YOUR FULL SERVICE SHOP FOR ALL WATER AND WASTEWATER PIPING NEEDS
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.
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.