summary of butterfly valve and model description

1. Summary along with the advance of science and technology and constantly updated products, has greatly improve the demand of industrial valves, the use of butterfly valve has been developed from normal temperature low pressure to high temperature and high pressure, and wear resistance, corrosion resistance, etc. Because of the butterfly valve has a small volume, light weight, flexible operation, easy installation, and the advantages of large flow capacity, in food, medicine, petroleum, chemical industry, environmental protection, high building, water supply and drainage, metallurgy, mining, textile and energy has a lot of replaced in the field of gate valves, globe valves and other valves. Developed, the main products are: hard and soft sealing butterfly valve, ventilation butterfly Industrial Valves, expansion. Introduction of foreign advanced technology, in the process of design, fabrication, inspection, etc in strict accordance with the ISO9001 international quality system requirements of control. This product can also according to customer's configuration Settings, can choose pneumatic, electric, worm gear, four types provide configuration manually. 2. Features and use butterfly valve this product structure is compact, small volume, light weight, flexible operation, good sealing performance, small fluid resistance, long service life, easy installation, does not have the advantages of high temperature resistant. Use three eccentric structure at the same time, its connection form for the wafer, flange connection type, welding type may be adopted. Nominal pressure: PN0. 1Mpa～6. 4 mpa, nominal diameter: DN32 ~ 2500 mm, working temperature - 80 ~ 550 oc, material: cast steel, stainless steel, alloy steel. Applicable to steam, oil, nitric acid, oxidizing medium and drainage pipeline equipment, etc. 3. Model establishment type code ( D said butterfly valve) Structure code ( Table 1) Connection form code ( Table 2. )

table a table two structure code structure code lever type 0 4 vertical flange plate 1 7 oblique to the clamp plate 3 welding 6

transmission way code ( Table 3. )

watch three four code seat sealing surface or lining material code worm gear drive way 3 6 fluoroplastic alloy steel H pneumatic hydraulic F 7 carbide electric 9 copper alloy Y T

seat sealing surface or lining material code ( Table 4) Nominal pressure code body material code ( Table 5)

table five codes of Industrial Valves material valve material codes WCB CF8 (C 304). P8 1Cr5Mo ZG1Cr5Mo I CF3（ 304 l) P3 1Cr18Ni9TiZG1Cr18Ni9Ti P CF8M（ 316). R8 1Cr18Ni12Mo2TiZG1Cr18Ni12Mo2Ti R CF3M（ 316 l) R3

product USES standard: JB/T8527 - 97 flange connection size:

GB9113. 1 - 9113. 26 - 88 the overall steel pipe flange; GB9115. 1 - 9115. 36 - 88 welded steel pipe flange; Structure length:

GB/T5188. 2 - Connected to the valve structure length 94 wafer; GB / T12221 - 89 flange connection structure of the metal valve length; Pressure test: GB/T13927 - 92 general valve pressure test.

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