Summary:
Pneumatic low temperature diaphragm control valve is suitable for the medium temperature and 40 ° C to 196 ° C (such as liquid oxygen, liquid nitrogen, etc.), low temperature and cryogenic occasion. It is mainly composed of mutil-springs pneumatic diaphragm actuator with a long neck to take over the body. It adopts the long neck type upper bonnet function, which  causes the packing to work under the normal temperature, and reduces the external heat energy to pass in. In order to reduce transmission, the long neck adopts thin-walled structure, which has good low-temperature resistance. It is especially suitable for accurately controlling the process parameters of low-temperature gases and fluids (such as liquid oxygen and liquid xue) at a given value.

Advantages:
As for pneumatic low temperature control valve, because the use of the site belongs to a relatively stringent working condition, the parts of the processing of strict control. Special low temperature treatment ensures that the valve s not brittle in low temperature condition, and can withstand low temperature medium impact. It is widely used in metallurgy, air separation, oxygen production, petroleum, chemical and other low temperature, cryogenic occasions.