Seal Material: EPDM,FPM

Pressure: 0.5-2 bar(can adjust between 0.01-0.1 bar)

Max. Working Temperature:  120 degree C

Availably size:     1 1/2" - 2"

Availably connection:    Weld,Clamp,Thread

Availably standard: DIN,SMS,ISO,IDF

Certificate:     CE

Application:   

 1). when pressure is higher than the set pressure(standard 1 bar) can exhaust, otherwise is closed;

 2). when the pipe system in vacuum(standard-0.9bar) can automatically open.