Check Valves

Swing and Inline Piston

Check Valves – Piston

Pacson’s subsea Piston Check Valve is available from 1/2” to 6” and Pressures up to 17,500psi.
The valve can also be incorporated within needle and gate valves for chemical injection applications.

Product Features

  • Metal to metal seat sealing with additional Polymeric secondary seat seal for bubble tight isolation on gas service and at low pressures
  • No requirement for elastomers in process wetted areas
  • Metal seated static body joint. Elastomer variation shown is optional
  • API 17D Second Edition qualified
  • 2.1/16” Non-hard face variant qualified to 10,000psi. Although API 6A Annex I only requires to 5,000psi its qualified to 7,500 psi qualified
  • 2” and larger can be offered c/w hard facing for sand slurry applications

Design Benefits

  • No requirement for elastomers in process wetted areas
  • API 17D Second Edition qualified
  • 2-1/16” Non-hard face variant qualified to 10,000psi. Although API 6A Annex I only require to 5,000psi its qualified to 7,500 psi qualified

Check Valves – Bleeder Plug

Applications include Surface wellheads, valve stem sealant injection, pressure venting, etc

Available Sizes & Pressure Ratings

Materials Offered
½” NPT & L.P. up to 10,000 PSI Max WP
API 6A Type II connection up to 20,000 PSI Max WP

  • 316 Stainless Steel
  • Duplex UNS 31803
  • Inconel UNS NO6625
  • Inconel UNS NO7718

Product Features

  • Utilises a metal to metal primary seat seal with elastomeric back-up for bubble tight gas and low pressure sealing
  • The Pacson Bleeder Plug with API 6A Type II connection will be API 6FA fire tested by the end of 2018
  • A range of Stinger Tools can be supplied to work with the Pacson Bleeder Plugs

Design Benefits

  • A range of Stinger Tools can be supplied to work with the Pacson Bleeder Plugs
  • Simple, established design
  • Double barrier to process
  • Inherently fire-safe design

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