Provide unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure*, valve shuts off. (Not for use as relief valve.)
Materials: 316 Stainless Steel: body, cover, poppet and cover gland. 300 Series Stainless Steel: spring Standard O-ring: Viton, for operation to 500° F (260°C). Buna-N or Teflon available for 250°F (121°C) or 400°F (204°C) respectively; specify when ordering.
Cracking Pressure: 20 psi (1.38 bar) ±30%. Springs