High-Pressure Blind Valve

  • Quick opening high-pressure blind valve
  • AII Ыinding process completes within 3 minutes safely and easily.
  • Sturdy and simple design shall make high reliability with the most advanced technology and durability.
Applicable Standard
Design Features

Applicable Standard

  • Design Standard: API 600, BS1414, DIN3352
  • Face to Face: ASME B16.10, EN 558, DIN3202
  • End Flange: ASME B16.5, ASME B16.47, DIN2533
  • BW Ends: ASME B16.25, DIN3239
  • Inspection and Test: API 598, DIN3230

Design Features

  • Packing pad can be added, that can reduce the torque when valve opening and closing
  • Metal-wrapped flexible graphite gasket for 150LB, metal-wound gasket for 300LB and 600LB, metal gasket for 900LB and above, or 600LB according to customer’s requirement.
  • The elastic wedge type disc can compensate the surface distortion of the valve seat and the deformation of the valve body caused by the pipeline pressure.
  • The stem design has a tapered upper sealing surface, which is sealed with the back seat on the bonnet when valve be fully opened.
  • The strength of connection between stem and wedge exceeds the strength of stem screw root.
  • The sealing surface of seat is spray welded with STL 6 cobalt-based hard alloy, the seat can be fixed by welding, or be threaded as customer’ s requirement.
  • Structure: Bolted bonnet, outside screwed stem and yoke, threaded back seat. rising stem, flexible wedge gate.
Applicable Standard

Operation method

Manual operation Electric, Pneumatic or Hydraulic


Refinery, Chemical plant, Offshore, Steel


Gas & Liquid Perfect lsolation (Zero Leakage)


Standard Design :
-20°С ~ +200°С
High Temp. Design:
+200°С ~ +816 °С
Cryogenic Design :
-196 °С

Size Range NPS 1/2 (DN15) - NPS100 (DN2500) Pressure Rating ASME Class 150 to Class 1500 (Available on request)
Body Materials CS, SS, Special material (Duplex, Hastelloy, MOnel, Inconel etc) Blind material SS, Special material (Duplex, Hastelloy, MOnel, Inconel etc)