Product description

Cryogenic Gate Valve

Model

Z40H、Zp43/44/48H(F)-Cryogenic Gate Valve

Nominal diameter

NPS 2”～48”(DN50～DN1200)

Operating temperature

-196℃～300℃(the range of service temperature may vary for different materials )

Nominal pressure

CLASS 150～2500 （PN20～PN420）

Material

Main material: A351 CF8、CF8M、CF3、CF3M;A352 LCB、LCC, etc.

Design standard

API 600、API 6D、ASME B16.34、GB/T 12234、GB/T 12224、BS 6364

Structural length

ASME B16.10、GB/T 12221

Connecting end

ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113、GB/T 12224

Test standard

API 598、ISO 5208、GB/T 26480、GB/T 13927、BS 6364

Operation method

Non-elevating hand wheel, bevel gear, motor drive unit, pneumatic drive unit

Application fields

For application of liquid nitrogen, liquid hydrogen, liquid oxygen, etc. in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, chemical engineering in urban construction, etc.

Other remarks 1

The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve.

Other remarks 2

The main parts subject to a temperature ≤-101℃ are subzero treated to prevent valve deformation under ultra-low temperatures.

Other remarks 3

SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing.

Other remarks 4

Rising stem structure, making the valve switch position be clear at a glance

Other remarks 5

The valve stem thread will not come into contact with the medium, so the corrosion of medium to the thread is reduced.

Other remarks 6

Small switching moment, reliable sealing

Other remarks 7

The gate valve has the wedge resilient, self-sealing parallel double-plate and stretching type parallel double-plate structures, so the sealing performance is good.

Other remarks 8

Small flow resistance, high flow capacity and good flow characteristics

Other remarks 9

For small wedge resilient gate valves, the interchangeability can be ensured with process tooling.

Other remarks 10

Through improving the structural design and selecting reasonable packing structure and qualified packing supplier, the valves can meet the Class A sealing test requirements of ISO 15848 FE.