Pressure Seal Valves are intended for high pressure and high temperature applications in all types of fluid, except where severe coking may occur. The Pressure Seal Valves use the process pressure to exericise additional force in the body / bonnet sealing ring, ensuring far superior sealing of this area. The Sealing rings are metallic, thus avoiding the possibility of wear or deterioration. The thrust ring above the sealing rings ensures homogeneous distribution of forces in the entire circumference.


Carbon Steel ASTM A216 - WCB or Equivalent
Alloy Steel ASTM A217 - WC6, WC9, C5, C12, C12A or Equivalent
Duplex Stainless Steel ASTM A995 - 1A, 2A, 4A, 5A or Equivalent
Stainless Steel ASTM A351 - CF8, CF8M, CF3, CF3M, CN7M or Equivalent
Special Alloy Steel Inconel 625, 825 or Equivalent
Hastelloy C
Monel or Equivalent

Production Range

  • Pressure Rating: ASME class 600 to class 2,500
  • Service Temperature: Up to +500℃
  • Available Size: NPS 2" ~ 24"

Design Standards

  • Basic Standards:ASME B16.34, MSS SP 144
  • Face to Face:ASME B16.10

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