D643H product overview:
I plant the introduction of foreign advanced technology can be based on J, using precision shaped elastic sealing ring and the three eccentric multi-level metal seal structure, is widely used in medium temperature less than 425 DEG C, petroleum chemical industry, metallurgy, electric power and water supply and drainage and municipal construction and other industrial pipelines, adjust the flux and set off fluid. The three eccentric valve structure, valve seat and disc sealing surface are made of stainless steel with different hardness, good corrosion resistance, long service life, the two-way valve seal military postal function, valve product line with national GB/T13927-92 pressure test standard.
D643H features:
1, the valve uses three eccentric seal structure, the valve seat and the butterfly plate almost no wear, with more view of the tight sealing function.
2, the sealing ring is made of stainless steel, has the dual advantages of ametal sealandsealthe, both in low and high temperature conditions, both with excellent sealing performance, corrosion resistant, long service life etc..
3, the disc sealing surface using cobalt based alloy welding, sealing surface wear resistance, long service life
4, large formatdiscusinglatticestructure, high strength, large flow area, flow resistance is small.
5, the valve has a two-way sealing function, the installation is not limited by the flow of media, and is not affected by the location of space, can be installed in any direction.
6, the driver can be multi station (rotating 90 degrees or 180 degrees) installation, user-friendly.
Main technical parameters of D643H:
Nominal DN (mm) 50 ~ 2000
Nominal pharmacological PN (MPa) 0.6 1 1.6 2.5
Seal test (MPa) 0.66 1.1 1.76 2.75
Strength test (MPa) 0.9 1.5 2.4 3.75
Applicable temperature carbon steel: -29 C ~ 425 C stainless steel: -40 DEG C ~ 650 C
Suitable for medium water, air, natural gas, oil and weak corrosive fluid
Leakage rate in line with GB/T13927-92 standards
Drive mode worm gear drive, electric, pneumatic, hydraulic
Four, D643H pneumatic hard sealing butterfly valve main parts materials
Part name material
Body WCB, alloy steel, stainless steel, QT450-10
Butterfly plate WCB, alloy steel, stainless steel, QT450-10
Valve shaft 2Cr13 stainless steel, alloy steel
Seal ring
Flexible graphite
Five, D643H standard
Manufacturing standard JB/T 8527-97
Flange standard GB9113-2000
Structure length standard GB12221-89
Inspection standard GB/T 13927-92
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