Product type

ON/OFF

Product description

Cryogenic Butterfly Valve

Model

DD343H-Cryogenic Butterfly Valve

Nominal diameter

NPS 2”～48”(DN50～DN1200)

Nominal diameter

-196℃～340℃

Nominal pressure

CLASS 150～900 （PN20～PN150）

Material

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

Design standard

API 609、ASME B16.34、BS 6364

Structural length

ASME B16.10、GB/T 12221、API 609

Connecting end

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

Test standard

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

Operation method

Handle, worm, motor-drive unit, pneumatic drive unit

Application fields

Low temperature industries such as LNG, LPG, LEG, air separation, etc.

Other remarks 1

The extension dimensions of valve stem and bonnet may vary according to different temperature ratings.

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

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 4

Compact structure, easy installation and disassembly, repair friendly and light weight

Other remarks 5

It has a certain adjustment capability, and can be used as a control valve.

Other remarks 6

Good sealing performance of zero leakage

Other remarks 7

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 8

Blow-off prevention design to ensure the operation safety

Other remarks 9

Drain board design to effectively prevent inflow of condensate to insulation layer

Other remarks 10

Low leakage packing is used for valve stem sealing to meet the requirement for low leakage.