ZZVYP self-operated pressure relief valve with pilot valve no need of theexemal energy, which can work in eectroless and airless situation , both convenient and energy saving , reduce to the low cost; the nitrogen sealing installment for the nitrogen and releasing nitrogen pressure with the big active area, established spring stffness to be small , the movement to be keen, the installment work to be steady; adopted the non-pdding desing, valve lever wear strength to be small, te response to be rapid, the control precision to be high, the nitrogensupply equipment adopts the pilotvlave for operation,
Desing Standard：IEC60534
Norminal Diameter：DN20-DN300
Norminal Pressure：PN16-PN64
Body Materials：Cast Steel, Stainless Steel, Gr-Mo Steel
Certificates: ISO9001:2008
Note: Products can be designed to client's requirements.
