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Cock of the pneumatic valve selection principle is what?
by：AIRWOLF
2020-10-15
Cock pneumatic valve by rotating 90 degrees of the fortress of the pneumatic valve opening and pneumatic valve body in the same or separate, spilling realize a kind of rotary pneumatic valve opened or closed.
Cock pneumatic valve selection principle, the main is to see where it USES.
1) used for distribution of medium and change the flow direction of medium, its working temperature is not higher than 300 ℃, nominal pressure PN 1 or less. 6 mpa, is not greater than the nominal diameter of 300 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 level is not greater than Class300 and nominal diameter is not more than 300 mm, suggest choose pneumatic valve oil seal type conical cock.
(4) oil field exploitation, gas drilling, the branch pipeline, refining and cleaning equipment, nominal pressure no greater than Class7500, nominal diameter is not more than 900 mm, the working temperature is not higher than 340 ℃, 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 as the base of medium can choose teflon sleeve sealing conical cock pneumatic valve; For medium to acetic acid as the base, can choose Crl8Nil 2 m02ti stainless steel with ptfe cone sleeve seal cock pneumatic valve.
6 in the hvac system in coal gas, natural gas, pipeline and equipment, nominal diameter is not more than 200 nm, appropriate chooses packing type pneumatic valve cone cock.
1) used for distribution of medium and change the flow direction of medium, its working temperature is not higher than 300 ℃, nominal pressure PN 1 or less. 6 mpa, is not greater than the nominal diameter of 300 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 level is not greater than Class300 and nominal diameter is not more than 300 mm, suggest choose pneumatic valve oil seal type conical cock.
(4) oil field exploitation, gas drilling, the branch pipeline, refining and cleaning equipment, nominal pressure no greater than Class7500, nominal diameter is not more than 900 mm, the working temperature is not higher than 340 ℃, 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 as the base of medium can choose teflon sleeve sealing conical cock pneumatic valve; For medium to acetic acid as the base, can choose Crl8Nil 2 m02ti stainless steel with ptfe cone sleeve seal cock pneumatic valve.
6 in the hvac system in coal gas, natural gas, pipeline and equipment, nominal diameter is not more than 200 nm, appropriate chooses packing type pneumatic valve cone cock.
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