High temperature, high pressure and Pressure self sealing gate valves are widely used in pipelines of power, petroleum, chemical and other systems. Cutting off or connecting pipeline media is a more durable and compact valve. It has the characteristics of light weight, small size, and low maintenance, and is particularly suitable for high temperature and high pressure conditions in thermal power plants.

This product has the following structural characteristics:

1. The four ring structure design can absorb the outward thrust generated along the valve stem direction due to internal pressure.

2. The sealing ring provides a pressure bearing surface and prevents deformation of the gasket.

For carbon steel and alloy steel valves, the stainless steel composite layer ensures the effectiveness and corrosion resistance of the critical valve body sealing area.

4. Soft steel gaskets with large sealing surfaces and flexible graphite+304 wire gaskets have excellent sealing performance.

5. The valve stem has a conical upper sealing surface, which is in close contact with the sealing surface on the valve cover when the valve is fully opened, preventing the valve stem from being blown out

6. The elastic wedge-shaped gate can compensate for the surface distortion of the valve seat sealing ring and the deformation of the valve body caused by pipeline stress, thereby increasing the sealing effect.

7. The standard Material of the sealing surface of the valve seat sealing ring is cobalt base 6, which is welded and installed with sealing material.

Performance parameters:

Nominal Size:

DN50~DN350/NPS2~NPS24

Nominal Pressure:

PN200~PN320/Class900~Class2500

Valve body Material:

WCB/ZG15CrMo/ZG15Cr1Mo1V/A217 WC6/A217/WC9

Operating temperature

-29℃~425℃/-29℃~550℃/-29℃~570℃/-29℃~540℃/-29℃~570℃

Suitable medium:

Water, steam, etc

Connection method:

butt welding

Operation method:

Manual, gear, electric

Design and Manufacturing:

NB／T 47044/ASME B16.34

Welding end size:

NB／T 47044/ ASME B16.25

Structural length:

GB／T 12221/ASME B16.10

Inspection and Testing:

GB／T 26480/API 598