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.
