Type : Over & Under Pressure
Set Pressure : Air Out : 5 ~ 50 mm Bar. Air In : 50 ~ 2.5 mm Bar
Size : 2” ~ 10”
Connection : Flange PN, ANSI
Body : Ductile Iron, Stainless Steel
Trims : Stainless Steel
Protection : II 1⁄2 G c IIB T X
Compliance : 94/9/EC, ATEX 95, ISO 16852
BS&B manufactures wide range of Breather Valves to protect Tank & other Equipment. BS&B 944 series is for both Over & Under Pressure.
http://dev.bsbsystems.com/EN/Flame_Arresters/TankSaf/Model_944