电磁阀

Solenoid valves ESV series two ways normal closed solenoid valves with diaphragms can be widely used in refrigeration, pneumatic and hydraulic system, also in boiler and fire-fighting, etc. Solenoid valves use full-closed magnetic coil and DIN international standard electric plug, so it is characterized by its good insulation, waterproof, moisture proof, anti-vibration and corrosion resistance. Operating principle While energized in coil, the electromagnetic power opens the small orifice. Then the pressure in upside of valve reduced, so the pressure difference between both side of diaphragm happen and lead to diaphragm lift to open the main orifice. While de-energized in the coil, plug stem will drop and close the small orifice because of spring force and its weight. The flow media enters into upside of diaphragm through throttle hole, then pressure in both side of diaphragm balances, then the diaphragm will drop and close the main orifice. Technical data Ambient temperature: -20 50 .C Medium temperature: -25 120 .C Max. working pressure: 3 MPa Available medium: R134a,R22,R407C,R404A/507,air,water and oil. Optional voltage of solenoid coils: A.C.: 24V,36V,110V,220V,380V. D.C.:12V,24V,110V,220V Type and dataConnection form ModelConnection size (in.)Kv value (m3/h)Opening diff. pressure (MPa)Dimension (mm)Min.Max.A.C.D.C.LengthWideHeightFlare SAEESV65/160.40.0052.11.7854597ESV83/81854597ESV101/21.8854597ESV135/83894597ESV163/44.511960120ESV197/8511960120Solder ODFESV6W5/160.41254597ESV8W3/811254597ESV10W1/21.81254597ESV13W5/831504597ESV16W3/44.518560120ESV19W7/8519060120ESV25W1-1/89.50.03232721201-3/825072120ESV32W1-3/815281861301-5/828186130The Kv value is the water flow in m3/h at a pressure drop across valve of 0.1MPa,ρ=1000 kg/m3 Letters after the model:W (welded)means solder ODF.