[3  & 4 x 1  & 2 (26mm x 20mm)]

[3  & 4 x 3  & 4 (26mm x 26mm)]

[1  & 2 x 3  & 8 (20mm x 16mm)]

[1  & 2 x 3  & 8 x M10 (20mm x 16mm x 10mm)]

Great replacement for the old or broken check valve of the air compressor.

Easy to install.

The three connections are each for pipe connection, compressed air tank and compressor piston pump.

Thread: 3/4 x 3/4 (26 mm x 26 mm).
Material: brass.
Maximum pressure: 20 bar.
Diameter of the hole for connecting the pressure switch: 6 mm