Pneumatic low temperature ball valve is mainly used to output liquid low temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc., not only flammable and explosive, but also gasification when heating, and volume expansion hundreds of times during gasification . The material of the pneumatic low temperature ball valve is very important. If the material is not qualified, it will cause external leakage or internal leakage of the casing and sealing surface. The comprehensive mechanical properties, strength and rigidity of the components cannot meet the requirements for use or even break. Causes the LNG medium to leak and cause an explosion. Pneumatic low temperature ball valve undergoes special low temperature treatment. The rough parts are placed in the cooling medium for several hours (2-6 hours) to relieve stress, ensure the low temperature performance of the material, and ensure the finished size to prevent the valve from working at low temperatures. At the same time, leakage caused by deformation due to temperature changes.
Product specifications
Nominal pressure: 16.0MPa Nominal diameter: 10mm ～ 50mm
Applicable medium: LO2, LN2, LAr, LNG, LC2H4, etc.
Applicable temperature: -196 ～ + 80 ℃ Connection: SW,BW,RF
Media flow direction: flow from left to right of the valve
Material of main parts
Body, bonnet, stem : stainless steel
Sphere: stainless steel solid ball Filling: PTFE Seal: PTFE or PCTFE
Customer Notice:
1 . If customers have special requirements for products, they must provide the following instructions in the order contract:
a . Structure length
b . Connection Type;
c . Nominal diameter
d . Product use medium and temperature and pressure range;
e . Testing, inspection standards and other requirements.
2 . The factory can configure various driving devices according to customer specific requirements.
3 . If the determined valve type and model are provided by the customer, the customer should correctly explain the meaning and requirements of its model, and sign the contract on the condition that the supply and demand sides understand and agree.
4 . For futures and ordering customers, please call the letter to tell the valve model, specifications, quantity, delivery time and place in detail. And advance payment of 30% of the total contract amount, the supplier is ready for production.
