Cryogenic Gate Valve
Description of Cryogenic Gate Valve:The main material of ZECO cryogenic gate valve is selected. Considering from the metallographic aspect, in addition to austenitic steel, copper and aluminum with face centered cubic lattice, general steel will appear low temperature brittleness at low temperature, thus reducing the strength and service life of the valve. When the temperature is higher than -100℃, choose ferritic steel; when the temperature is lower than -100℃, choose austenitic steel; low pressure and small diameter valves can choose copper and aluminum and other materials.Stem and fastener is selected, when the temperature is higher than -100℃, stem and bolt materials adopt Ni, Cr-Mo alloy steel, through appropriate heat treatment, to improve tensile strength and prevent thread bite.Austenitic stainless steel is used when the temperature is higher than -100℃.Low hardness of 18-8 acid resistant steel will cause mutual abrasion between stem and packing, causing leakage of packing.Therefore, the stem surface must be hard chrome plated (thickness 0.04-0.06mm), or nitride and nickel-phosphorous plated to improve surface hardness.In order to prevent nuts and bolts from biting to death, the nuts are generally made of Mo steel or Ni steel and coated with molybdenum disulfide on the surface of the threads.
Features of Cryogenic Gate Valve:1.The valve body of ZECO cryogenic gate valve is able to withstand expansion and contraction due to temperature changes without permanent deformation of the seat structure due to temperature changes;2.The bonnet of ZECO cryogenic gate valve is constructed with a long neck bonnet to protect the stuffing box.The long neck bonnet design also facilitates winding of cooling material;3.ZECO cryogenic gate valve uses flexible wedge or open wedge. These structures maintain a reliable seal regardless of temperature;4.The low temperature properties of the material, such as compression resilience, tightening force, tightening pressure distribution and stress relaxation, are taken into account.
Material of Cryogenic Gate Valve:
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 |
We are one of leadingchina ball valve manufacturersand cryogenic ball valve suppliers. Choose us to buy Valve China.
Send product request
Other supplier products
Balancing Valve | ZECO is currently the only manufacturer in China with accurate KV data and support debugging services. We haveour own dynamic water testing system,... | |
Foot Valve | Basic information of Foot Valve This valve is installed at the bottom of the pump's underwater pipette, restricting the return of the liquid to the... | |
Balancing Valve | ZECO Valve Group is established in 1991, as an experienced china valve manufacturer. We have 5 factories in China, which are located in Shanghai, Y... | |
Combined Butterfly-Check Valve | ZECO Valve Group, founded in 1991 with focus on manufacturing china water valve, including control valves, balancing valves, gate valve, butterfly ... | |
Knife Gate Valve | Features of sewer knife gate valve Full bore design for high media throughput capacity; U-shaped gasket with good sealing effect; Gate pla... |
Same products
Class 300 Valve | Seller: GangYe Group Co.,Ltd. | Class 300 valves have a pressure rating of 300 pounds per square inch (psi) or 20.7 bar, allowing... | |
Class 3000 Industrial Valve | Seller: GangYe Group Co.,Ltd. | Wafer Body, Full Port Design, Flanged End Class 3000 Ball Valve. A ball valve class 3000pressure-... | |
Class 2500 Industrial Valve | Seller: GangYe Group Co.,Ltd. | Class 2500 valves can be used for both on-off and throttling applications. The specific valve typ... | |
Class 150 Valve | Seller: GangYe Group Co.,Ltd. | globe valve class 150is a pressure rating designation defined by standards organizations, such as... | |
Class 1500 Industrial Valve | Seller: GangYe Group Co.,Ltd. | A class 1500 valve made of 316 stainless steel, for instance, can sustain 248 bar of pressure at ... |