OPW
202-0660 EMERGENCY VENT
6" MANUAL RESET
330-552-428-002

The OPW 202 Emergency Vent is designed to prevent an aboveground storage tank from becoming over-pressurized by providing high-capacity venting in the event of a fire or blockage of an OPW pressure vaccume vent. The 202 is a vapor-tight, spring-loaded emergency vent. When the tank builds pressure to 2.5 psi, the spring-loaded lid opens full-bore and discharges vapors upward to relieve the pressure. The lid remains open for inspection to indicate a problem with the normal tank venting, or if a fire has taken place, until manually reset. The appropriate 202 Series vent is determined by the emergency venting capacity requirements of the tank.

Vent Capacity.....335,000 @ 2.5PSIbr>

Materials
Lid...................Cast iron, with powder-coated finish
Body................Aluminum <
Poppet Seal.... ..Nitrile