Cock of the pneumatic valve selection principle 2)

according to the structural characteristics of pneumatic valve to cock and design can achieve the function, suggest to choose according to the following principle:, used to assign medium and change the flow direction of medium, and working temperature ℃ or less, nominal pressure or less. MPa, nominal menstruation mm or less, it is suggested that to choose more pathways cock pneumatic valve. , milk, juice, beer, food companies and pharmaceutical equipment and piping, austenitic stainless steel is a suggested alternative to tight pattern conical cock pneumatic valve. Mining, oil field, natural gas field exploitation, the branch pipeline, refining and cleaning equipment, nominal pressure level CL, nominal or less menstruation mm or less, the working temperature ℃ or less, suggested that choose pneumatic valve oil seal type conical cock. Mining, oil field, natural gas field exploitation, the branch pipeline, refining and cleaning equipment, nominal pressure level CL, nominal or less menstruation mm or less, the working temperature ℃ or less, pressure balance inverted cone plug pneumatic valve is used in the advice. , in the large chemical industry, containing corrosive medium in the pipeline and equipment, requiring open or closed fast, for medium to nitric acid as the base, can choose the teflon sleeve of CrNi stainless steel sealing conical cock pneumatic valve; For medium to acetic acid as the base, can choose the teflon sleeve of CrNiMoTi stainless steel sealing conical cock pneumatic valve. , in the coal gas, natural gas, pipeline and equipment of hvac system, when the nominal pressure or less. MPa, nominal menstruation mm or less, appropriate chooses packing type pneumatic valve cone cock. Keywords:
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