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GriffcoModel G-Series -Solid PTFE Flanged Back Pressure Valves

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Griffco G-Series diaphragm flanged back pressure valves with solid PTFE flanges are designed to enhance the performance of chemical feed systems by applying a continuous back pressure to the chemical feed pump, while also acting as an anti-siphon valve. Robust construction ensures reliability in the rigorous service of municipal and industrial applications.

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  • Solid, robust, one-piece machined construction
  • Flanged connection
  • Leak-free design - no glue, no seals
  • Anti-siphon function
  • Molded Noryl top with integral hardware locking
  • Composite PTFE/EPDM diaphragm
  • Adjustable up to 150 psi (10 bar)
  • Valve sizes from 1/2" to 1" or DN 15 to DN 25
  • Tamper-resistant adjustment screw
  • High-temperature option up to 300°F (149°C)

  • High reliability at affordable price
  • Long diaphragm life
  • Multiple diaphragm material options
  • Factory or field settable