Electric hard seal pneumatic hard seal pneumatic valve pneumatic valve _ _ pneumatic components factory valve industry

Description of pneumatic pneumatic valve electric hard seal pneumatic valve: electric hard seal pneumatic valve is mainly used in coal chemical industry, polysilicon, refining, metallurgy, electric power industries, specifically for the blackwater, ash water, waste water and pulp, steam and ash powder, emulsion medium. Pneumatic hard seal pneumatic valve parameters: pressure rating: Class150 ~ Class2500 temperature: - 196 ℃ ~ + 680 ℃ nominal size: 2 ~ NPS4 NPS1 / structure forms: castings, forgings, two chip, chip device operation: manual, worm gear and worm, electric valve actuators, pneumatic valve actuator electric hard seal pneumatic valve executive standard: 1, the design and manufacture of pneumatic valve according to provisions of API6D, BS5351 2, the structure of the pneumatic valve length according to ASME B16. 10 rule 3, the size of the flange connection in accordance with the ASME B16. 4, the pressure of the shell material - five rules According to ASME B16 temperature. 34 stipulated 5, test and inspection according to provisions of API598 6, accord with NACE MR0175 - body parts 2002 regulations, pneumatic hard seal pneumatic valve technical features: 1, electric hard seal pneumatic valve stem as blow-out proof design structures, gland under load, embedded inside gland, ensure the safety of the stem under any pressure, here also have on sealing function, further to ensure reliable sealing packing. 2 hard sealing pneumatic valve, pneumatic pneumatic forged body, surface spray welding of nickel base alloy, thickness of 0. 5 - 0. 7 mm, hardness of HRC60 - 62, aerodynamic body base material and surface material metallurgy melt, high bonding strength, to ensure that the spray welding materials in use process will not fall off. 3, electric hard seal pneumatic valve seat sealing surface surfacing welding of nickel base alloy, hardness of HRC58 - 60, fully meet the requirements of wear-resisting, plate ring seat is loaded, the plate ring on both sides of a protective measures to prevent the debris into the spring chamber, effectively prevent plate ring failure. 4, high temperature and hard seal pneumatic valve seat adopts scraper structure design on both sides, has since the opening and closing process cleaning function. 5, the connection parts of pneumatic valve body adopt double seal design, to ensure long-term reliable seal. 6, in line with the fire safety, use a metal to metal seal components of all metal pneumatic valve structure, the performance is not affected in the fire safety simulation test. 7, pneumatic hard seal pneumatic valve adopt unique packing plate design, avoid pneumatic valve when opening or closing setpoint and packing pressure plate screw collision, make packing clamp screw loosening, affect the sealing performance. Pneumatic components factory specializing in the production of electric hard seal pneumatic valve industry valve manufacturer, has a dual sealing, convenient operation, long service life, etc, deeply the general customers trust and support. Customers according to the pipe connection standard to select pneumatic pneumatic valve, hard seal if need to install the electric valve actuators, is equipped with electric explosion-proof device, or install pneumatic valve actuator, is equipped with pneumatic valve sanlian pieces, so that our sales staff for selection and quotation. : pneumatic _ hard seal butterfly valve electric hard seal butterfly valve D343H triple eccentric butterfly valve _ three partial hardness sealing butterfly valve metal hard seal butterfly valve points several forms?