ST straight-through diaphragm valve

The ST diaphragm valve has a straight-through flow passage. It permits internal cleaning by rodding, brushing or pigging and has a different passage geometry from the W weir type. The diaphragm isolates the operating mechanism from the fluid and eliminates a stem stuffing box. Select body and diaphragm materials, end connections and the service envelope for the fluid. Metal body options include cast iron, ductile iron, carbon steel and stainless steel.