Cryogenic Gate Valve
Categories: Gate Valve, Gate Valve By Material
Tag: OS&Y Valve
Description
Cryogenic gate valves are adapted to special conditions of service, being designed to operate effectively at temperatures below -40ºC, mainly used in gas liquefaction systems.
What is a Cryogenic Valve？
Piping and Pipeline systems handling liquid hydrogen, oxygen, helium, nitrogen, liquefied natural gas, or similar very cold fluids require to use of cryogenic valves. The term cryogenics deals with the materials and processes below -1010C (-2390F). Hence, Cryogenic valves must be designed with properties to handle such low temperatures. The main difference between cryogenic valves from standard valves is that they are able to work in such low temperatures with high pressures.
Why do Cryogenic Valves have long stems?
All cryogenic valves for liquid natural gas, methane, oxygen, ammonia, etc applications are specially designed. Cryogenic valves usually have extended bonnets so that the valve stem seals are kept away from the cold source. This will serve two important purposes:
The valve stem seals will have a relatively higher temperature.
There will be sufficient space to provide insulation between the pipeline and the lever/handwheel operating the valve.
Materials of Cryogenic Valves
Usual materials that are used for constructing a cryogenic valve are Aluminum, Monel, Brass, bronze, Stainless Steel, Incoly, Zirconium, etc. PTFE or graphite is normally used as the seal material.
What is a Cryogenic Gate Valve?
With ZECO cryogenic gate valves, the flow rate is three to five times higher than with globe valves of comparable size. This speeds up the filling of tanks and trailers and saves valuable time for the delivery of cryogenic liquefied gases. The cryogenic gate valves are available in sizes from 1″ to 24″ and secure pressures up to 1500LB, at operating temperatures of -196°C to +120°C. The gate valves are manufactured in stainless steel.
Features of Cryogenic Gate Valve:
All basic design features of ZECO cast steel gate valves are adapted to special service conditions at cryogenic temperatures. ADDITIONAL DESIGN FEATURES:
Extended bonnets with sufficient gas column length, usually specified by customer, are supplied for all valves to keep stem packing at sufficient distance away from the cold fluid to remain functional.
Flexible wedges with CoCr alloy seating faces for cryogenic service.
Cleaning: All cryogenic valves are thoroughly degreased and cleaned and pipe ends are sealed to prevent contamination.
Low emission packing
Bleed hole between upstream and backseat to prevent the pressure increase of body cavity.
Prevent stem unstable structure
Material of Cryogenic Gate Valve China:
|
No |
Part |
Material |
|
1 |
Body |
ASTM A350 LF3 |
|
2 |
Seat Ring |
ASTM A276 410 + STL |
|
3 |
Wedge |
ASTM A350 LF3 + STL |
|
4 |
Stem |
ASTM A182 F6 |
|
5 |
Bonnet Gasket |
Graphite + SS316 |
|
6 |
Bonnet Bolt |
ASTM A193 B16 |
|
7 |
Bonnet Nut |
ASTM A194 4 |
|
8 |
Bonnet |
ASTM A350 LF3 |
|
9 |
Backseat |
ASTM A182 410 |
|
10 |
Stem Packing |
Reinforced Graphite |
|
11 |
Handwheel |
KTH330-08 |
As one of cryogenic ball valve suppliers, we can offer kinds of related products for sale, if you are interested, please leave us a message.
Now the price of globe valve made in chinais low, if you have needs, please contact us.
Send product request
Other supplier products
 |
Differential Pressure Control Valve | Festures of dpcv valve Accurate and stable pressure difference control； 20-250Kpa Pressure difference control range; Simple debugging, without c... |
 |
Backflow Preventers(Low Pressure) | ZECO Valve Group, founded in 1991 with focus on manufacturing china water valve, including control valves, balancing valves, gate valve, butterfly ... |
 |
3 Inch Butterfly Valve | Description of 3 Inch flanged Butterfly Valve: ZECO 3 butterfly valveis a small diameter butterfly valve, usually manually operated, and the connec... |
 |
Motorized Butterfly Valve | As one of the leadingchina ball valve suppliers, ZECO Valve Group developed our own laboratory for research &development for international stan... |
 |
Check Valve | The check valve for water of ZhengFeng is the advanced pipe control equipment at home and abroad, mainly installed at the entrance of hydropower st... |
Same products
 |
FT wax used for EVA-based hot melt adhesive | Seller: Syntop chemical Co.,Ltd. | Fischer-Tropsch wax is a commonly used performance modifier in hot melt adhesives, especially for... |
 |
high melting point FT wax improve the heat resistance of adhesives | Seller: Syntop chemical Co.,Ltd. | FischerTropsch wax is an alkane polymer produced from synthesis gas or natural gas via the Fische... |
 |
For hot melt adhesive high melting point FT WAX | Seller: Syntop chemical Co.,Ltd. | The key advantage of high-melting-point Fischer-Tropsch wax in hot-melt adhesives stems from its ... |
 |
Diesel Injection Delivery Valve 1W6982 Diesel Injection Delivery Valve 19A | Seller: China lutong | Diesel Injection Delivery Valve 1W6982 Diesel Injection Delivery Valve 19AChris Diesel Injection... |
 |
High melting point FT wax used as plastic processing additives | Seller: Syntop chemical Co.,Ltd. | Due to its high purity, low oil content, narrow melting range, high hardness, and excellent therm... |
