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Injection valves

Griffco injection valves are designed to ensure that the chemical dose of the fluid is injected into the centre of a process stream. This not only ensures better mixing of the dose in the fluid, but also prevents corrosion of the process pipe wall.
The check valve prevents the process fluid from going back up the feed line. The robust construction ensures reliability during maintenance or servicing.



  • High reliability at an affordable price
  • Robust construction
  • Sizes from 1/2″ to 2″ NPT or BSPT, or DN 15 to DN 50
  • Pressures up to 207 bar
  • Integrated check valve (standard)
  • Multiple “check ball” options (Stainless Steel, PTFE, Hastelloy® C)
  • Hastelloy® C spring (standard)
  • Multiple tip configurations (standard 45°)
  • Wide range of liquid-contact materials
  • Seal options include EPDM and FKM (Viton®)
  • Union connection interface (standard)
  • Connection options: threaded or glued/welded socket
  • Flexible hose connection options
  • Fast and easy union disconnect for servicing
  • Male and Female thread options
  • Press-fit, no welds
  • Custom quill lengths
  • Quill stiffener option for plastic construction
  • Optional quill lock


  • SS316 L
  • Alloy 20
  • Hastelloy® C
  • PVC
  • CPVC
  • PVDF
  • PP
  • connections: 1/2″ to 2″ MNPT or male BSPT
  • Union (plastic only) 1/2″ to 2″ or DN 15 to DN 50
Injection valves
Pressure relief valves