SEWON Emergency Vent Manhole Cover

Model: SEA, SEAS, SEB, SEV, SEVH, SEC, SEL

Size Range: 16″ – 24″
Set Pressure Range: 22 to 10,000 mmWC
Set Vacuum Range: 22 to 700 mmWC

Description

Details
Application
The SEWON emergency vent cover is designed to provide emergency relief capacity beyond that furnished by the normal operating pressure & vacuum relief valve on the tank. These large relief cover which only open in emergencies are used to protect tanks against rupture or explosion that could result from thermal pressure caused by fire surrounding a tank, etc. It remains closed tightly at all internal pressure below setting pressure (and above the vacuum setting). These cover also provide easy access into the tank.
Specifications
Size Range 16″ – 24″
Set Pressure Range 22 to 10,000 mmWC
Set Vacuum Range 22 to 700 mmWC
Materials
Body Aluminium, Carbon Steel, SS304, SS316
Pallet SS304, SS316
Diaphragm / O-ring Teflon (Diaphragm seal)