Chemical Injection RF Flange Access Fitting Assembly Model 57

Cosasco high pressure chemical injection fittings allow safe, controlled, and easy injection under full operating pressure, dramatically reducing downtime. Cosasco offers a wide range of delivery options from standard NPT to robust flanged side tees for chemical injection into high pressure systems.

A variety of injection tubes, quills, and nozzles can be used to provide the most efficient delivery and dispersion for a given application. A Cosasco Retriever and Service Valve are used to safely install and retrieve injection and sampling components under operating conditions that need to be replaced due to a change in injection requirements or if maintenance is necessary.

Learn about Cosasco SAFR Services to protect and lengthen the life of your Chemical Injection Access Fittings!


  • Mounting — 2” ASME (ANSI) Flange RF
  • For Mating with Standard Flanges, no Welding, Less Compact than Model 50
  • Standard Temperature Rating with Viton/Teflon Seals: — From -15° F (-26° C) Up To +400° F (+204° C)
  • Pressure Rating — As Flange Size
  • Meets NACE MR0175 and MR0103
  • Canadian Registration (CRN) and Conformity to Pressure Equipment Directive (PED)


  • Access Under Pressure — Maintenance or removal under full operating pressure
  • Integral check valve (standard)
  • Robust, machined construction
  • Injection/Sampling Components available in highly corrosion resistant alloys
  • Safely inject a wide variety of chemicals
  • Available with ACME Threaded Internal Configurations
  • Various injection tubes, quills, and nozzles available


Cosasco chemical injection equipment may be used with a wide variety of chemicals and across a broad range of industries & applications.

  • Oil & Gas
  • Chemical Processing
  • Pipeline
  • Heavy Manufacturing
  • Cooling Systems

Inject a wide variety of chemicals.

  • Corrosion/Scale Inhibitors
  • Biocides
  • Boiler Water Chemicals
  • Demulsifiers
  • Oxygen Scavengers
  • Oxidants
  • Flocculants
  • Neutralizing Agents
  • Dewaxers


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