Vacuum Relief Valve

Series8140 are used when vacuum relief is the only requirement. Intake relief necessary under working conditions is achived by a spring or weight loaded pallet. The type 8145and 8147 may be side mounted on the tank body or piped in..

Features

Designed and tested according to API2000；
Vertical/Horizontal installation;
Size 2” through 12” for 8140,8145,while 3”to14”for8143,8147；
Available material option：aluminum，carbon steel，stainless steel and other material；
Modula construction；
FEP diaphragm can effective prevent seat and pallet from sticking，Select the seal structure according to the operation condition；
The inlet and outlet flange are in according with ANSI B 16.5 150Lb RF（It can be designed according to users’ requirement）；
It can be specially designed with Flame Arrester, Inlet Pipe, Steam Jacket, Blowing Hole, Lining or Humidity Absorber.