Check Valves

  • Compact Two-Piece Rugged Body Construction

  • Spring options for fixed cracking pressures

End Connections
  • Powerlok® Tube End, NPT, BSPT, BSPP, ISO, DIN and JIS pipe threads

Size range
  • 1/8” to 1” and 3mm to 25mm Tube End and Male/Female Threaded Pipe End Connections

Cracking Pressure
  • 1/3 psig to 25psi

Operating Pressure
  • 6000psig as Standard Up to 20000psig on request

Body Materials
  • Includes Stainless Steel, Brass.

Seal Materials
  • EPDM and NBR as Standard FKM for high temperatures up to 220°C

Relevant Design Standards
  • Threads – ANSI B1.20.1 Pressure Test – BS EN 12266-1

  • Oil & Gas

  • Chemical & Petrochemical

  • Power Generation

  • Process Analytical

Note: -As a drive for continuous improvements of our products, Thomas & Brian® reserves the right to change the descriptions contained in this brochure without prior notice. Consult local Agent or Factory for revisions and/or service related issues.