Airpower is the importer of the following replacement minimum pressure valves for screw compressors
These units are compatible with most brands of screw compressors. It can also be used after an air dryer, if the dryer is running at very low pressures, to improve the dryer efficiency.
20 mm (3/4” BSP) minimum pressure valve for 7.5 to 15 kW (10 to 20 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 15 kW (20 hp.). screw compressors.
25 mm (1” BSP) minimum pressure valve for 22 to 30 kW (30 to 40 hp.). screw compressors.
32 mm (1 1/4” BSP) minimum pressure valve for 37.5 to 75 kW (50 to 100 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 7.5 to 15 kW (10 to 20 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 15 kW (20 hp.). screw compressors.
25 mm (1” BSP) minimum pressure valve for 22 to 30 kW (30 to 40 hp.). screw compressors.
32 mm (1 1/4” BSP) minimum pressure valve for 37.5 to 75 kW (50 to 100 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 7.5 to 15 kW (10 to 20 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 15 kW (20 hp.). screw compressors.
25 mm (1” BSP) minimum pressure valve for 22 to 30 kW (30 to 40 hp.). screw compressors.
32 mm (1 1/4” BSP) minimum pressure valve for 37.5 to 75 kW (50 to 100 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 7.5 to 15 kW (10 to 20 hp.). screw compressors.
20 mm (3/4” BSP) minimum pressure valve for 15 kW (20 hp.). screw compressors.
25 mm (1” BSP) minimum pressure valve for 22 to 30 kW (30 to 40 hp.). screw compressors.
32 mm (1 1/4” BSP) minimum pressure valve for 37.5 to 75 kW (50 to 100 hp.). screw compressors.
A minimum pressure valve maintains the minimum pressure needed in the compressor to ensure proper lubrication and reliable system performance.
Yes. When installed after an air dryer running at very low pressures, the valve helps maintain stable pressure, improving dryer efficiency and performance.
The correct size depends on your compressor’s power rating. Airpower supplies valves ranging from 20 mm to 32 mm to fit compressors from 7.5 kW up to 75 kW.
Yes. Airpower minimum pressure valves are designed to work with most leading screw compressor brands.
They should be inspected during routine maintenance. If the valve is leaking, stuck, or causing pressure instability, it should be replaced immediately.
We are fully equipped to handle major overhauls, pressure testing, and component sales directly from our Bellville headquarters.