Vacuum pressure relief valve PROTEGO® VN-A-PC

for tanklow-pressure

The PROTEGO® Type VN-A-PC pilot-controlled diaphragm valve is a newly developed valve for pressure and vacuum relief. Primarily used as a safety device for outbreathing in tanks, vessels, and process engineering equipment it also offers reliable protection from overpressure and/or vacuum. It prevents intake of air and unacceptable product vapor loss up to and until the set pressure is reached. In the valve can be used as an inbreathing device. In such applications, the main valve is directly controlled when exposed to a vacuum, i.e. it functions as a weight-loaded diaphragm valve.