Pressure Relief Valves

Griffco Pressure Relief Valves

There are four main types of pressure relief valves:

M-Series:Small connections (1/4″ to 1/2″ or DN 8 to DN 15)
G-Series:Medium to large connections (1/2″ to 4″ or DN 15 to DN 100)
High-Flow:High-flow connections (1/2″ to 1″ or DN 15 to DN 25)
High-Pressure:High-pressure connections up to 2000 psi (138 bar) in sizes from 1/4″ to 1″ (DN 8 to DN 25)

Variations and Options Include:

NEW Unibody:valve with union connections, made from a solid PVC or CPVC body
PTFE Flanged:G-Series valve with flange connections, made from a solid PTFE body

Standard Materials:

· PP

· PVC

· CPVC

· PVDF

· TFE

· Halar®

· 316 SSL

· Alloy 20

· Hastelloy® C

Standard Connections:

· Threaded

· Flanged

· Union

· Socket

Spring Ranges:

· 10 to 150 psi (1 to 10 bar) standard

· 0 to 50 psi (0.0 to 3.5 bar)

· 10 to 250 psi (1 to 17 bar)

· 50 to 350 psi (3.5 to 25 bar)

· 350 to 2000 psi (24 to 138 bar)

Diaphragm Materials:

· EPDM/PTFE (standard)

· FKM (Viton®)

· CSM (Hypalon®)

· PTFE/FKM

· Kalrez®

Configurations:

· 3-port (up to 1″ or DN 25) standard

· 2-port 180°

· 2-port 90°

· Wall mount

Options:

· Adjustment knob

· Metal tops

· Metal adjustment screw

· Material certifications