Pressure/Vacuum Relief Valve w/ Pipe-Away & Vacuum Spring

Model 1222B is used for pressure and vacuum relief where vapors must be piped away. Escaping vapors are piped away through a flanged outlet connection. This helps to provide increased fire protection and safety.

Features

• The flanged outlet connection allows escaping vapors to be piped away, instead of released directly to the atmosphere
•  Peripheral and central seat guides ensure reliable, repeatable performance
• A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
• Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
• Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture