Characteristics of pneumatic hard seal pneumatic valve valve industry _ pneumatic components factory

Pneumatic pneumatic valve pneumatic hard seal characteristics of pneumatic valve, pneumatic components factory production of pneumatic hard seal pneumatic valve industry valve has the characteristics of high sealing, long service life, high safety. （ 1) High impermeability. (1) using pneumatic components factory valve industry unique grinding equipment and technology to ground aerodynamic body and seat, so that it is completely sealed. (2) the seat structure design into axial floating, at low pressure by spring pressure seal, and reasonable application of piston effect principle, using medium pressure automatic high-pressure reliable seal. (3) the valve seal o-rings and winding gasket between the double insurance to implement, at the same time, deputy valve body is used to the hard metal to metal contact between, can prevent damage of because of excessive gasket compression deformation, also can avoid the valve operating torque changes caused by external forces, at the same time can prevent leakage during fire accident, prevent fire spread outward. (4) of the stem and reliable sealing packing protective measures, and improve the rust stainless steel stuffing box ruled out carbon steel parts for packing. (5) packing gland improvement for the traditional clamp of packing and packing pressure set of structural design, the two style of the pressing sleeve of packing and packing pressure plate adopts pneumatic contact, to ensure that the packing gland set always vertical, and in the packing gland set set inside the ptfe liner, avoid the stem and packing gland set of scratches and wear, and reduce the size of the valve operating torque. In accordance with the needs of users, using the butterfly spring loaded packing pressure mechanism, make the stem packing seal is more reliable. （ 2) Long life. 1) sealing surface hardening treatment. Aerodynamic body surface spray welding of nickel base alloy, this is a kind of thermal spraying technology, the purpose is to improve the aerodynamic body surface hardness and wear resistance, the surface hardness HRC56 - can be achieved 60, seat welding too made of alloy, the hardness of HRC45 - 53, the special working condition of pneumatic body and seat to choose chrome carbide spray welding tungsten carbide or the hardness up to HRC80, have good wear resistance, corrosion resistance and high temperature resistant performance; With low friction, long-life compound bearing, avoids the direct contact of metals and metal, make the valve switch more flexible. （ 3) High security. (1) automatic pressure relief valve lumen. When liquid medium entrapped in the valve lumen due to temperature gasification, lead to an increase in abnormal pressure in the lumen, within the lumen of the medium can rely on its own forces to push the seat and automatic relief, so as to ensure the safety of the valve. (2) stem blow-out proof structure design, even in the abnormal pressure valve cavity and packing pressure plate failure, etc. In extreme cases, can also ensure the valve stem not blown out by medium, to ensure that the valve is used in the process of high security. (3) with pneumatic valve stem connection using spline connection, good bearing capacity, good to neutral, easy disassembly. (4) pneumatic hard seal pneumatic valve adopts anti-static structure design. (5) there is a requirement for fire protection for the users of pneumatic valves, pneumatic components factory the fire-proof structure design of the valve industry are in line with the API607, API6FA, BS6755, JB/T6899 standard specification requirements, etc. : pneumatic high platform pneumatic valve forged steel flange pneumatic valve technical characteristic of electric hard seal pneumatic hard seal pneumatic valve pneumatic valve _ _ high-temperature hard seal pneumatic valve