Wafer Butterfly Valve

The wafer butterfly valve opens and closes by rotating a disc 90° about its axis. The body is clamped between two pipeline flanges, so it is compact, small and light; it is one of the most widely used valves in water treatment and HVAC systems. The construction is a centreline resilient-seated type: the disc presses tightly on a vulcanised rubber seat to give bubble-tight shutoff. Because a wafer installation has no integral flanges, the valve cannot be used as a pipe end on its own and must be clamped between pipeline flanges. It can be fitted with a lever handle, worm gearbox or pneumatic/electric actuator and suits shutoff and regulation of water and gas at large diameters and low differential pressure.

· Centreline resilient seat, bubble-tight shutoff · Wafer installation, small, light and low cost · 90° rotation for fast operation · Replaceable seat for easy maintenance · Lever / worm gear / pneumatic / electric actuator · Not for use as a pipe end on its own

For municipal water supply and drainage, wastewater treatment, HVAC and circulating water lines, used for shutoff and regulation of water and gas media at large diameters and low differential pressure.