PTV SERIES CONSTANT PRESSURE EXPANSION VALVES (HOT GAS BYPASS)

The PTV series bypass valve is an energy regulating valve, It is used to ensure the continuous operation of a compressor
when the suction pressure is lower than preset value. It can allow a portion of the high-temperature and high-pressure hot gas discharged from the compressor's exhaust port to bypass through the pipeline and flow into the low-pressure chamber of the compressor. This raises the suction pressure, preventing it from dropping below the preset limit and thereby avoiding compressor shutdown, ensuring continuous operation.
1. Applications of the Hot Gas Bypass Valve:
-Refrigeration Capacity Control:
By adjusting the opening of the hot gas bypass valve, the flow rate of hot gas from the high-pressure side of the compressor can be controlled. This allows regulation of the refrigeration capacity to match the load of the evaporator, avoiding operation under low or excessive load conditions and improving energy efficiency.
-Partial Load Replacement:
By bypassing hot gas from the compressor's high-pressure side to the low-pressure side, part of the load is offset. This
prevents the suction pressure from falling too low and causing the compressor to shut down, ensuring stable system
operation.
-Energy Efficiency Improvement:
Accurate control of the refrigeration capacity through the hot gas bypass valve helps improve the overall energy efficiency of the refrigeration system and reduce energy waste.
2. Features:
-High control accuracy, easy adjustment, convenient installation and a wide operating and capacity range.
-Unique design of the balance flow ports effectively eliminates the fluctuations in control accuracy caused by pressure drop when the medium passes through the ports
- it comes in two forms: internal balance and external balance.