Constant pressure expansion valves

Constant pressure expansion valves PTV series constant pressure expansion valves (hot gas bypass) can adjust compressor capacity and make it match with the load of evaporator. Placed in a bypass between high and low pressure side of refrigeration system, PTV imposes a lower limit on compressor suction pressure by supplying the low pressure side with replacement capacity in the form of hot or cool gas from high pressure side. Features : 1) Exquisite angle design for easy installation. 2) Accurate adjusting pressure. 3) Wide capacity and operating ranges. Technical data Max. working pressure: 2.5MPa Max. testing pressure: 3MPa Type and data ModelNormal capacity (KW)Connection(in.)Adjustingrange (MPa)Mediumtemperature(°C)Max. workingpressure(MPa)Max. testingpressure(MPa)R134aR22/R407CR404A/R507InletOutletPTV8 71173/8 SAE1/2 SAE0.03→0.6-50 1502.53PTV8W 71173/8 ODF1/2 ODFPTV10W 1422.516.21/2 ODF5/8 ODFPTV12W 3040251/2 ODF5/8 ODFNotes: 1) Nominal capacity is based on evaporating temperature +5°C, condensing temperature +38 °C. 2) After the model, ”W” indicates solder ODF,”E” indicates external equalization. 3) Factory setting opening pressure is 0.4MPa. Adjust regulation knob at clockwise rotation for one round, opening pressureincreases 0.1 MPa, inversely, opening pressure decreases 0.1 MPa.