Call 1-800-GRIFFCO   (1-800-474-3326)   Intl: +1-716-835-0891

Call 1-800-GRIFFCO (1-800-474-3326)
Intl: +1-716-835-0891

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M-Series Low-Flow Back Pressure Valves
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Griffco M-Series diaphragm low-flow 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-syphon valve. Robust construction ensures reliability in the rigorous service of municipal and industrial applications.

M-Series Low-Flow Back Pressure Valves
M-Series Low-Flow Back Pressure Valves​

Optional ARV

Air release valves act as a priming valve for M-Series low-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 (24 bar)
  • 4 optional pressure ratings (springs)
  • Valve sizes from 1/4" to 1/2" or DN 8 to DN 15
  • 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

  • 1/4" to 1/2" or DN 8 to DN 15

Wetted Materials

  • PVC
  • CPVC
  • Polypropylene
  • PVDF
  • Hastelloy® C

 

  • PTFE
  • Halar®
  • 316L SS
  • Alloy 20

M-Series BPM - Data Sheets

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

M-Series BPM - Air Release Valve (ARV) Data Sheet

TitleDescriptionDate modifiedDownload
ARV Priming Valve (US) Imperial08-09-2020 Download
ARV Priming Valve (Spanish) Metric08-09-2020 Download

M-Series BPM - IOM Manuals

TitleDescriptionDate modifiedDownload
IOM Manual BPM (US) Imperial09-14-2020 Download
IOM Manual BPM (Spanish) Metric09-14-2020 Download

M-Series BPM - Dimensional Drawings

M-Series 2-Port @ 180° (1/4" - 1/2") (DN 8 - DN 15)

TitleDescriptionDate modifiedDownload
Dim BPM 2Port@180 Threaded US 1/4" - 1/2"08-23-2020 Download
Dim BPM 2Port@180 Socket US 1/4" - 1/2"08-23-2020 Download
Dim BPMF 2Port@180 Flanged US 1/4" - 1/2"08-23-2020 Download
Dim BPMF 2Port@180 Flanged Metric DN 8 - DN 1508-23-2020 Download
Dim BPMU 2Port@180 Union US 1/4" - 1/2"08-23-2020 Download
Dim BPMU 2Port@180 Union Metric DN 8 - DN 1508-23-2020 Download

M-Series BPM - Sectional Drawings

TitleDescriptionDate modifiedDownload
M001 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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