温度有反应的扩大液体注射

Temperature responsive expansion liquid injection valves WTVseries temperature responsive expansion valves(liquid injection) are usually installed suction side of compressor in refrigeration system to protect the refrigeration system from too high discharge gas or oil temperature. The capacities of WTVA ,WTVB series temperature responsive expansion valves (liquid injection) are large and usually used for large refrigeration system. Operating principle When the discharge gas or oil temperature in refrigeration system is too high, the valve will open. Liquid refrigerant will be fed into the suction side and compression cavity after temperature drop through the valve, and then cool the motor coil and the mixture of refrigerant and oil, which makes the liquid refrigerant entering the evaporator in lower temperature. Technical data Max. working pressure: 3MPa Max. testing pressure: 3.5MPa Type and data Model Intermediate pressure(Pi) (MPa)Opening temperature (tb) range (.C)Connection Inlet×Outlet (in.)Capillary length (m)WTVC0.155→853/8×1/2 SAE10.265→900.375→950.485→1000.590→1100.695→1140.7101→1160.8106→1190.9111→123 ModelIntermediate pressure(Pi) (MPa)Opening temperature (tb) range (.C)Connection Inlet×Outlet (in.)Capillary length (m)WTVAWTVB0.150→751/2×5/8 SAE20.275→850.380→900.485→950.590→1010.694→1050.7100→1100.8106→1150.9111→119Notes: tb= bulb temperature(Discharge gas temperature of compressor),Pi= Suction pressure.