Flange Non-rising Stem Hard Seal Gate Valve

Product description

Customer challenge

Product function

Low operating torque function

Anti-external leakage function

Anti-internal leakage function

The valve can be easily closed with a torque of 80% of the nominal diameter (DN), achieving zero leakage under nominal pressure.

The upper seal adopts a multi-packing design to ensure no water leakage during the dynamic movement of the valve stem; the middle flange features a self-sealing design, where the greater the pressure in the valve chamber, the tighter the extrusion, and the more reliable the sealing.

Processed and produced by special equipment, the sealing surface has high machining accuracy, ensuring reliable sealing and no internal leakage.

Value advantage

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  Energy conservation and environmental protection

  The surface is treated with non-toxic epoxy resin powder, which is sprayed by an automatic powder coating line to ensure uniform and continuous coating thickness.
• 

  Excellent Material Quality

  All ductile iron castings are self-cast using domestically leading wire-feeding nodulization technology, with a nodularity rate exceeding 90%. The quality requirements are higher than national standards.
• 

  Low Flow Loss

  Full-passage design results in low flow loss, achieving energy saving and consumption reduction.
• 

  Low Torque

  Under rated working pressure, the opening and closing torque is no higher than 80% of the requirements specified in national standards.
• 

  Reliable Sealing

  Processed and produced by special equipment, the sealing surface features high machining accuracy, ensuring reliable sealing and no internal leakage.

Relevant data