English Chinese (Simplified) Finnish French German Italian Japanese Korean Portuguese Spanish Turkish

Griffco Back Pressure Valves

3d-star

Griffco offers a variety of back pressure valves and options that work in many different applications. There are three main types of back pressure valves:

  • M-Series: Low flow (1/4" to 1/2" or DN 8 to DN 15 connections)
  • G-Series: Medium to large flow (1/2" to 4" or DN 15 to DN 100 connections)
  • High Flow: High flow (1/2" to 1" or DN 15 to DN 50 connections)
  • Medium Pressure: Medium Pressure to 800 psi (55 bar) (1/4" to 1" or DN 8 to DN 25 connections)

 

Variations and Options Include:

  • 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
  • ARV: Air release valve acts as a priming valve for a back pressure valve

 

bpv page

Standard Materials:

  • PP
  • PVC
  • CPVC
  • PVDF
  • TFE
  • Halar®
  • 316SSL
  • 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)

Diaphragm Materials:

  • EPDM/PTFE (standard)
  • FKM (Viton®)
  • CSM (Hypalon®)
  • PTFE/FKM
  • Kalrez®

Configurations:

  • 180˚ ports (standard)
  • 90˚
  • Wall mount

Options:

  • Priming port
  • Adjustment knob
  • Metal tops
  • Metal adjustment screw
  • Material certifications
Sizes, Flow Capacities & Pressure Ratings
Series Size Maximum Flow Maximum Pressure
Pulsating Continuous
Inch Metric GPH LPH GPM LPM PSI BAR
M-Series 1/4" DN 8 100 378 5 19 350 24
3/8" DN 10 200 757 10 37 350 24
1/2" DN 15 300 1,135 15 57 350 24
Unibody 1/2" DN 15 260 984 15 57 150 10
3/4" DN 20 300 1,135 19 72 150 10
1" DN 25 500 1,890 26 98 150 10
G-Series 1/2" DN 15 320 1,211 17 63 350 24
3/4" DN 20 367 1,389 19 72 350 24
1" DN 25 462 1,748 24 90 350 24
1-1/2" DN 40 1,388 5,254 72 275 250 17
2" DN 50 1,533 5,803 80 302 250 17
3" DN 80 5,157 19,521 270 1,020 250 17
4" DN 100 5,157 19,521 270 1,020 250 17
High-Flow 1/2" DN 15 600 2,271 30 114 250 17
3/4" DN 20 600 2,271 30 114 250 17
1" DN 25 1,000 3,785 54 204 250 17