March 15, 2016 Andrew Isaacs Pulse Width Expansion PXV & PXVW Expansion Valves March 15, 2016 Andrew Isaacs Pulse Width Expansion The Hansen PXV and PXVW are pulse modulating liquid refrigerant expansion valves. The PXV uses a specially designed, high-cycle, long life, solenoid operator. A sophisticated 4-20 mA input signal is used to monitor the liquid flow to the system.
