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G-Series Medium-Flow Back Pressure Valves
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Griffco G-Series back pressure valves 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.

G-Series Medium-Flow Back Pressure Valves

Valve Features

  • Anti-siphon function
  • Solid, robust, machined construction
  • Flanged, union, threaded and socket connection options
  • Molded Noryl top with integral hardware locking
  • 316L SS metal valve and top options
  • Molded PTFE/EPDM diaphragm
  • Adjustable up to 350 psi (25 bar)
  • 4 optional pressure ratings (springs)
  • Valve sizes from 1/2" to 4" or DN 15 to DN 100
  • Tamper-resistant adjustment screw
  • High-temperature option up to 300˚F (149˚C)

Griffco Benefits

  • High reliability at affordable price
  • Long diaphragm life
  • Wide range of valve materials
  • Multiple diaphragm material options
  • Factory or field settable

Available Sizes

  • 1/2" to 4" or DN 15 to DN 100

Wetted Materials

  • PVC
  • CPVC
  • Polypropylene
  • PVDF
  • PTFE

 

  • Halar®
  • 316L SS
  • Alloy 20
  • Hastelloy® C

G-Series BPG - Data Sheets

TitleDescriptionDate modifiedDownload
Data Sheet BPG (US) Imperial09-14-2020 Download
Data Sheet BPG (Intl) Metric09-25-2020 Download
Data Sheet BPG (Spanish) Metric09-14-2020 Download

G-Series BPG - IOM Manuals

TitleDescriptionDate modifiedDownload
IOM Manual BPG (US) Imperial09-14-2020 Download
IOM Manual BPG (Spanish) Metric09-14-2020 Download
IOM Manual - BPG 3" & 4" (DN 80 & DN 100) Imperial09-14-2020 Download

G-Series BPG - Dimensional Drawings

G Series 2-Port @ 180° (1/2" - 1") (DN 15 - DN 25)

G Series 2-Port @ 180° (1-1/2"- 2") (DN 40 - DN 50)

TitleDescriptionDate modifiedDownload
Dim BPG1 2Port@180 Threaded US 1-1/2"- 2"08-23-2020 Download
Dim BPG1 2Port@180 Socket US 1-1/2"- 2"08-23-2020 Download
Dim BPGF 2Port@180 Flanged US 1-1/2"- 2"08-23-2020 Download
Dim BPGU 2Port@180 Union US 1-1/2"- 2"08-23-2020 Download
Dim BPG1 2Port@180 Threaded Metric DN 40 - DN 5008-23-2020 Download
Dim BPG1 2Port@180 Socket Metric DN 40 - DN 5008-23-2020 Download
Dim BPGF 2Port@180 Flanged Metric DN 40 - DN 5008-23-2020 Download
Dim BPGU 2Port@180 Union Metric DN 40 - DN 5008-23-2020 Download

G Series 2-Port @ 180° (3" - 4") (DN 80 - DN 100)

TitleDescriptionDate modifiedDownload
Dim BPG5 2Port@180 Flanged US 3" - 4"09-01-2020 Download
Dim BPG5 2Port@180 Flanged Metric DN 80 - DN 10008-23-2020 Download

G-Series BPG - Sectional Drawings

TitleDescriptionDate modifiedDownload
G001 08-26-2020 Download

3D CAD Drawings Now Available

Three-dimensional CAD drawings are now available for you to download and use in your pumping system designs.

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