OPW
201-8080 EMERGENCY VENT
8" AUTO RESET
330-552-429-001

The OPW 201 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 201 is a weighted, mushroom-style emergency vent. When the tank builds pressure, the weighted cast iron lid is forced up off its seat to relieve the pressure. When pressure is relieved, the lid lowers and is automatically reset. The appropriate sized 201 vent is determined by the emergency venting capacity requirements of the tank.

Vent Capacity.....471,000 @ 2.5PSIbr>

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