High flow, zero leak, low pressure drop check valve suitable for most fluid and gas applications. Fully guided poppet with free floating O'ring design is extremely tolerant of particulate contamination. A metal to metal positive stop in both the open and checked position protects the O'ring and spring from over-stress fatigue. Zero external leakage is achieved by utilization of a static O'ring seal with TFE backup ring. When specified with the proper seal material, these valves are ideally suited to cryogenic system applications.

Technical Data

• Nominal Crack Pressure: .15, 1, 3 & 8 Psig
  (0.01, 0.07, 0.21 & 0.55 bar)

• Leakage: Zero to maximum operating pressure. TFE Seals may require back pressure to seal leak-tite

• Temperature Rating:
  -320F - 450F (-195C to 232C)
  based on seal material

• Maximum Operating Pressure to 300F (149C)

Materials of Construction

Dimensional / Flow Data

Ordering Information

PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, material compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.