Product description

Cryogenic Gate Valve

Model

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

Nominal diameter

2″～48″

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, GB/T24925

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.

Technical characteristics

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.

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

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

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

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

Small switching moment, reliable sealing

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.

Small flow resistance, high flow capacity and good flow characteristics

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

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.