http://www.zzvalvecn.com/diaph....ragm-valve/manual-di
Plastic diaphragm valve is a special form of shut-off valve. The biggest difference between the plastic diaphragm valve and other valves is that it adopts a structure without a stuffing box; the rubber diaphragm can completely isolate the corrosive medium in the flow channel from all the driving parts, thereby eliminating the usual "running, emitting, dripping" of the valve. , Leakage" and other drawbacks.
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