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Corporation stops

Griffco corporation stops are designed to ensure that chemical fluids are injected into the centre of a process stream. This not only ensures better mixing of the dose in the process stream, but also prevents corrosion of, and along, the process pipe. Griffco corporation stops are retractable and have a ball valve to seal the process stream during servicing (when the process cannot be drained). The integrated check valve prevents the process fluid from going back up the chemical line. With a limited amount of seals and joints, this leak-free design ensures safety and long-life operation. The robust construction ensures reliability and easy operation during maintenance or servicing.



  • High reliability at an affordable price
  • Robust construction
  • Sizes from 1/2″ to 1″ or DN 15 to DN 25
  • Pressures up to 10 bar
  • Integrated check valve with Hastelloy C-spring
  • Multiple tip configurations possible (standard 45°)
  • Wide range of liquid-contact materials
  • Seal options in EPDM or FKM (Viton®)
  • Fast and easy union disconnect for servicing
  • Stainless steel chain, cut to safety length
  • Outer housing and valve material options include PVC, brass, PVDF, CPVC and stainless steel 316
  • Optional secondary injection port
  • Custom quill lengths
  • Lock ready design for tamper resistant safety
  • Quill stiffener option for plastic construction

Quill materials:

  • PVC
  • CPVC
  • PVDF
  • SS316 L
  • Alloy 20
  • Hastelloy® C

Ball valve materials:

  • Stainless Steel 316 L, Alloy 20 and other alloys
  • Brass
  • Plastics (PVC, CPVC, PVDF, and others)


  • Plastic union threaded, or union with glued/welded socket


  • Material certification for metal corporation stops
Injection valves
Pressure relief valves