The constant pressure valve is an important component of many refrigeration and A/C systems. Automatically measures refrigerant to the evaporator at a speed equal to the pumping capacity of the compressor. Constant pressure valve includes diaphragm, control springs, seat, valve needle and ball. Control springs on diaphragm move diaphragm. This allows the valve to be open. Opposite forces are provided by lower evaporator pressure and constant body spring force. This allows the valve to be closed. During off-cycle evaporator pressure builds spring pressure to overcome This will keep the valve closed until the next cycle. At the beginning of the on-cycle the compressor will quickly decrease the evaporator pressure. When this pressure equals the control spring pressure, the valve will start to open. The valve opens when the evaporator pressure is just below the control spring pressure setting. This is the valve opening point or setting. Plants have a single injected evaporator and distributors such as air conditioners, dehumidifiers, air dryers, water coolers and ice makers. It is suitable for all CFC, HCFC, HFC. The valve can be installed in any position. Constant pressure valve includes diaphragm, control springs, seat, valve needle and ball. Control springs on diaphragm move diaphragm. This allows the valve to be open. Opposite forces are provided by lower evaporator pressure and constant body spring force. This allows the valve to be closed. During off-cycle evaporator pressure builds spring pressure to overcome This will keep the valve closed until the next cycle. At the beginning of the on-cycle the compressor will quickly decrease the evaporator pressure. When this pressure equals the control spring pressure, the valve will start to open. The valve opens when the evaporator pressure is just below the control spring pressure setting. This is the valve opening point or setting. Plants have a single injected evaporator and distributors such as air conditioners, dehumidifiers, air dryers, water coolers and ice makers. It is suitable for all CFC, HCFC, HFC. The valve can be installed in any position.
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