UPVC safety valve back pressure valve PVC plastic relief valve safety relief valve 32mmDN251 inch
High quality PTFE composite diaphragm valve inside with almost can be used in most corrosive medium!! our factory is back pressure valve safety valve safety valve, but adjustable pressure higher than the back pressure valve pressure is 1-2 kg. The black cap is removed, the inside is a screw, with the hand clockwise pressure, the counterclockwise pressure is small, the adjustment is very sensitive!!
discount 70% in 2018-10-19 to 2018-10-21
freight :USD$7.00,(Postal parcel)
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