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Sizes
1/2 to 4 inch
Set Pressure
10-150 psi
Max Flow
up to 5,157 GPH
Body
Plastic or metal

Griffco G-Series pressure relief valves protect a chemical feed system from overpressure by venting chemical back to the tank or pump suction. Sizes run 1/2 to 4 inch, in PVC, CPVC, polypropylene, PTFE, PVDF, Halar (ECTFE), 316L SS, Alloy 20, or Hastelloy C bodies.

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Free shipping over $500
Lifetime tech support
Starting at:

$381.00

Availability
In stock
Lead time
7 days
Ships from
US PA - GA - FL - OH - TX - OR
Questions? Urgent request?
Call or text 24/7: +1 (484) 544-0506
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Sizes
1/2 to 4 inch
Set Pressure
10-150 psi
Max Flow
up to 5,157 GPH
Body
Plastic or metal
All possible part numbers

Product details

Headline

G-Series Pressure Relief Valves

Griffco G-Series medium-flow pressure relief valves are designed to protect chemical feed systems from over pressure damage caused by defective equipment or a blockage in the chemical feed line. Robust construction ensures reliability in the rigorous service of municipal and industrial applications. Also called bypass pressure valves.

Features & benefits

Technical Specifications
ParameterValue
Maximum Pressure350 psi (24 bar)
Temperature RangeUp to 300°F (149°C)
Valve Sizes1/2" to 4" (DN 15 to DN 100)
Pressure Ratings4 optional spring ratings
Construction Features
Materials & Design
  • Solid, robust, machined construction
  • 316L SS metal valve and top options
  • Molded Noryl top with integral hardware locking
  • Molded PTFE/EPDM diaphragm
Connection Options
  • Flanged connections
  • Union connections
  • Threaded connections
  • Socket connections
Configuration Options
  • Anti-siphon function
  • 2-port and 3-port configurations (90° and 180°)
  • Tamper-resistant adjustment screw
  • High-temperature option
Key Benefits
  • High reliability at affordable price
  • Long diaphragm life
  • Wide range of valve materials
  • Multiple diaphragm material options
  • Factory or field settable