How to select the imported pneumatic valve cock

(1) used for distribution of medium and change the flow direction of medium, its working temperature is not higher than ℃, nominal pressure PN or less. MPa, no greater than nominal diameter mm, suggest choose path more cock pneumatic valve.
(2) food companies such as milk, juice, beer industry and pharmaceutical equipment and pipeline, advice with austenitic stainless steel, tight pattern conical cock pneumatic valve.
(3) oil field, natural gas field exploitation, the branch pipeline, refining and cleaning equipment, nominal pressure no greater than the Class level, is not greater than the nominal diameter mm, suggested that choose pneumatic valve oil seal type conical cock.
(4) oil field exploitation, gas drilling, the branch pipeline, refining and cleaning equipment, nominal pressure level is not greater than the nominal size Class, no greater than mm, the working temperature is not higher than ℃, suggested that choose pneumatic valve oil seal type conical cock.
(5) in the large chemical industry, containing corrosive medium in the pipeline and equipment, requiring open or closed fast, in the nitric acid can be used for medium teflon sleeve sealing conical cock pneumatic valve; For medium to acetic acid as the base, can choose CrlNil MTi stainless steel with ptfe cone sleeve seal cock pneumatic valve.
6 in the hvac system in coal gas, natural gas, pipeline and equipment, is not greater than the nominal diameter nm, appropriate chooses packing type pneumatic valve cone cock.