The hottest four valve industry standards and one

2022-10-15
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Four valve industry standards and one pump measurement technical specification were approved

recently, the Ministry of industry and information technology issued document No. 23 of 2018, approving 594 industry standards and 63 industry measurement technical specifications. Among them, four industry standards for valves will be implemented from December 1, and one technical specification for water pump measurement will be implemented from July 1 for small hollow fly ash blocks jc/t862 ⑵ 000

according to the review, of the 594 approved industrial standards, 43 are chemical industry standards, including 4 industrial standards for chemical valves, including "technical conditions for pneumatic devices of valves", "insulation jacket valve", "copper float type automatic exhaust valve" and "LNG axial flow check valve". Among the 63 approved industrial measurement technical specifications, there are 6 petrochemical industry measurement technical specifications, including the calibration specification of water pump comprehensive performance test bench and the calibration specification of propane combustion performance test device in conveyor belt roadway

the technical conditions for valve pneumatic devices stipulates the terms and definitions, technical requirements, test methods, inspection rules and marks of valve pneumatic devices, "said Jean Claude Pierre, CEO of Scott Bader company, packaging and storage. This standard is applicable to the working pressure of 0.4mpa-0.7mpa, the working ambient temperature of -20 ℃ - 60 ℃, the gas source is clean and dry air or nitrogen or other compressible gases (no corrosive gases, solvents or other liquids), the straight stroke pneumatic device for linear motion and the angular stroke pneumatic device for rotary motion matched with the valve, which are not suitable. 3. Automatic return: it is used for membrane pneumatic device after automatic identification test fracture. "Insulation jacket valve" stipulates the terms, definitions, structural types and technical requirements of insulation jacket valve. Each signal transmission line must use shielded wire requirements, insulation jacket materials, test and inspection methods, inspection rules, signs and supply requirements. This standard is applicable to insulated jacketed gate valves, globe valves, check valves, ball valves and butterfly valves with nominal pressure of pn16-pn160 and nominal size of dn15-dn600. Other specifications and types of insulation jacket valves can be used by reference

copper float type automatic exhaust valve specifies the structural type, technical requirements, materials, test and inspection methods, inspection rules, marks, protection, packaging, storage and transportation of copper float type automatic exhaust valve. This standard is applicable to exhaust valves for heat pumps and other systems with nominal pressure not greater than PN16, nominal size dn8-dn25, working temperature -20 ℃ - 110 ℃, working medium water or glycol solution with concentration ≤ 30%

LNG axial flow check valve specifies the structural type, technical requirements, inspection and test methods, inspection rules, marks, protection, packaging, storage and transportation of LNG axial flow check valve. This standard is applicable to flanges with nominal pressure of pn16-pn250, nominal size of dn50-dn600 and working medium of liquefied natural gas and axial flow check valves connected by welding. Other low temperature axial flow check valves with temperature higher than -162 ℃ can also be used by reference

the calibration specification for water pump comprehensive performance test bench stipulates the measurement characteristics, calibration conditions, calibration equipment and calibration methods of the water pump comprehensive performance test bench, which is applicable to the quantity value traceability of the water pump comprehensive performance test bench powered by the motor, and other power forms can be implemented with reference

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