Furthermore, the model HPNV has the same characteristics as the other WIKA needle valves ... to BS6755/ISO 5208 leakage rate A. The high-pressure valve is available in various configurations ...

The needle valve may also get stuck partially open from grit in the oil. This will cause high pressure to go directly into the compressor’s crankcase, causing high low-side pressures and low high-side ...

s engineers confidently calculated that their new wear-resistant needle valves could probably provide optimum sealing for more than 5 million cycles before wearing out. High-tech materials such as ...

a magnetic coil used to reposition the needle valve; 3) a suction pressure transducer; 4) a suction line temperature sensor; and 5) a control board to read a pressure transducer and a suction ...