ONE OF THE FIVE VALVE PARES OF SCREW AIR COMPRESSOR:MINIMUM PRESSURE VALVE

Thank you for taking time out of your busy schedule to read this news, next will introduce you to the minimum pressure valve!

Functions and common faults of minimum pressure valve：

Function: The opening pressure is generally around 4 bar, ensuring that the pressure in the oil cylinder is not lower than this minimum pressure when air is output, to avoid excessive air flow rate leading to reduced separation effect of the oil-gas separator; when the machine starts, a certain pressure is established in the oil cylinder to ensure the circulation of the lubricating oil and provide initial control pressure for the control circuit; it acts as a one-way valve to prevent the compressed air in the pipeline from flowing back into the machine.

Common faults: The cylinder safety valve sprays air during operation because the minimum pressure valve is not opened, resulting in excessive pressure in the cylinder and the safety valve pressure relief protection; the computer has motor overload protection during operation because the minimum pressure valve is not opened, resulting in excessive pressure in the cylinder, increasing the load on the main motor, increasing the current, and shutting down the thermal relay protection; the air compressor fails to start because the minimum pressure valve is not closed tightly, resulting in compressed air backflow in the pipeline, causing a certain pressure in the cylinder, causing the unit to fail to start; the oil pressure is high when the air compressor is unloaded because the minimum pressure valve is not closed tightly. When the unit is unloaded, compressed air backflows in the pipeline, causing the pressure in the cylinder to increase, resulting in increased oil pressure and increased energy consumption of the unit.

Thank you for reading, in the next news, will update the screw air compressor other valve parts, please pay attention!