压力控制阀门

Pressure controlled water valve Pressure controlled water valveis usually installed on the inlet of condenser, which can regulate the flow of cooling water according to the change of condensing pressure. When condensing pressure of compressor rises, valve is turned up automatically, so more cooling water enters the condenser to accelerate the condensing of refrigerant. Reversely, when condensing pressure of compressor drops, valve is turned down automatically, so cooling water reduces and the condensing pressure is kept within certain range. Adjust screw rod at clockwise rotation, the control pressure of valve increases; inversely, the control pressure decreases. Type anddata SymbolModelCondenser sideLiquid sideFactory setting opening pressure(MPa)Kv value m3/hRefrigerantAdjusting range(MPa)Max. working pressure(MPa)Max. testing pressure(MPa)MediumMax. working pressure(MPa)Max. Medium temp.(°C)Low pressurePWV3/8 R134a,R22,R407CR404A/5070.5→1.822.4Fresh water 1600.750.8PWV1/2 2.5PWV3/4 3.2PWV1 5.0HighpressurePWV3/8G 0.7→2.32.6320.8PWV1/2G 2.5PWV3/4G 3.2PWV1G 5.0PWV1-1/4G 0.5→1.62.42.61.48.0PWV1-1/2G 10.0Kv value is the flow of water in m3/h at a pressure drop across valve of 0.1 MPa,ρ= 1000 kg/m3. Connection ModelCondenser sideLiquid sideDimension(mm)Length(L)Height(H)PWV3/8,PWV3/8G 1/4 flare 7/16"-20UNF nut3/8" flare100170PWV1/2,PWV1/2G 1/4 flare 7/16"-20UNF nutG1/284204PWV3/4,PWV3/4G 1/4 flare 7/16"-20UNF nutG3/484204PWV1,PWV1G 1/4 flare 7/16"-20UNF nutG1100220PWV1-1/4,PWV1-1/4G 1/4 flare 7/16"-20UNF nutG1-1/4130240PWV1-1/2,PWV1-1/2G 1/4 flare 7/16"-20UNF nutG1-1/2130240