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|Size::||NPS 2"~48"||Pressure Rating::||Class 150~2500|
|Material::||CF8、LCC、CF8M、LCB Etc.||Design & Manufacturing Standard::||BS 6364, API 600, API 6D,ASME B16.10, ASME B 16.5|
|Face To Face::||ASME B16.10, API 6D||End Connection::||ASME B16.5, ASME B16.47, ASME B16.25|
|Test And Inspection::||API 598, BS6364||Operation Method::||Manual ,Worm Gear, Electric Actuator, Pneumatic Actuator|
Low temperature valves of globe valve, good sealing and avoid potential rupture
Material: Carbon Steel,Stainless Steel,Alloy Steel,Duplex Stainless Steel
Operation: Manual,Gear Operated,Electric Operated,Pneumatic Operated
Applicable: Oil,Chemical,Natural Gas,Petrochemical,Coal Chemical and so on
Design and manufacture standards:BS 6364, ISO 10434, GB/T 24925, API 600
Face to face dimensions standards:ASME B 16.10, GB/T 12221
Flange dimensions standards:ASME B 16.5, GB, JB, HG, SH, BS, DIN, JIS and etc
Testing inspection standards:API 598, GB/T 13927, GB/T 26480, JB/T9092, ISO 5208, BS6364
Kelite valves specialized in manufacturing Cryogenic Gate valve with following good characteristics: good sealing performance, reliable safety guarantee, long life span and etc. Cryogenic Gate valve is one of the most widely used cutting off valve as the device of cutting off or connecting the flowing medium in pipeline, but nor for regulation purpose. Gate valve has a wide applicable range, both for pressure, temperature and nominal size, especially for middle & large sized pipe. The connection type of cryogenic gate valve could be flanged, screwed or socket welding.
Flanged Cryogenic Gate valve is used to connect pipe and fitting or its accessories. Flanged connection has the features of easy installation, good connection strength and good excellent sealing performance. The flange connection consists of flanges, bolts, nuts and gasket. When we fasten the connecting bolts, it would press the sealing gasket between the flange which would have elastic deformation and fill all the small space between the two flanges' sealing face, thus to realize the good sealing.
Cryogenic Gate valve refers to the valve with working temperature below -110℃ and widely used in area of LNG, LPG and other cryogenic medium. There are two different types of bonnet designing. One is bolted bonnet, i.e. the body is connected with bonnet by bolts & nuts with spiral wound gasket(If required, metal ring gasket could be provided) between. And the other type is welded bonnet, i.e. the bonnet is welded to body directly.
Cryogenic Gate valves are suitable for using on various kinds of pipeline from Class150 To Class900, PN16 To PN160 to cut off or connect the flowing of medium. By using different material, the valves could be suitable for medium such as water, steam, oil, nitric acid, acetic acid, oxidizing substance, carbamide and etc. Manual/bevel gear/pneumatic or electric actuators could be chosen by needs.
Most types of Cryogenic Gate valve is forced sealing, i.e. when valve is closing, an external force should be pushed on the gate to press it onto the seat surface so as to realize the good sealing.
The rising stem cryogenic gate valve is the gate valve whose stem moves up and down together with the disc. With the function of stem nut and guiding groove on valve body, the cryogenic gate valve turns the rotation movement of disc to linear motion.
Technical parameters and characteristics:
|Product type||Gate Valve|
|Product description||low temperature gate valve|
|Model||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/td>||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.|