Oil seal valve, differential oil seal valve, Shanghai brand - Valve Co., Ltd. Shanghai-quality and stability: the whole process of quality control, nuanced, comprehensive detection! Reasonable price: high internal cost control, reducing costs, to help customers! Fast delivery: advanced production lines, adequate stocking, shortening delivery time! Valve solutions provide complete engineering, oil seal valve pre-sale, sale and professional services. Product Name: Oil Seal Valve Model: CYZ40H, CYZ41H driving modes: manual connection: flange structural forms: wedge seal structure: Pressure range: 1.0-16.0Mpa Nominal Diameter: common material: steel, stainless steel, alloy steel etc. nameplate: male workers brand products described ordering process oil seal valve, differential oil seal valve structure principle, differential oil seal wedge gate valve is developed on the basis of existing flexible wedge gate structure, ie now propionate position wedge gate valve seat in the valve body cavity, each equipped with an automatic oil pressure seal lubrication institutions, the organization of cylinders filled with sealant can move the piston and the valve seat surface composition along the inner cylinder, when the valve When closed, the valve body cavity filled with a pressure medium, in the valve, i.e., the downstream end of the valve, due to the dielectric support is cut, the cavity is formed with a pressure difference, the pressure difference at which push the piston downward, thereby compressing the fuel tank sealant through the seat into the seat sealing surface channel-shaped sealing film in order to achieve a seal. In the front part of the body outside, each equipped with a sealed grease compensation pressed into the body, when the valve is required to compensate for sealant sink drain, simply rotate the gland seal fat can hole through the valve body into the seat sealing they realized the sealing surface. Suitable medium: oil, natural gas, widely used in petrochemical, power plants and other oil products, steam piping for people to connect or disconnect the line lifting device media. Oil seal valve, differential oil seal valve features: compact structure, reasonable design, the valve rigid, channel flow, flow resistance coefficient. Sealing surface of stainless steel and tungsten carbide, long service life. The use of flexible graphite packing, sealing and reliable. Lightweight and flexible operation. Gate valve opening and closing parts is, the direction of movement of the fluid direction perpendicular to the gate, gate can only be fully open and fully closed, can not be adjusted and the throttle. Ram has two sealing surface, the two most common mode of sealing surface to form a wedge gate valve, wedge angle with the valve parameters vary, usually 50, the medium temperature is not high for 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce small quantities of deformation gate in order to improve its process, to make up the sealing surface angle deviations arising during processing, this gate board called the flexible gate. When the valve is closed, the sealing surface can only rely on media pressure to seal, which rely on the sealing surface of the medium pressure to ram pressure to the other side of the seat to ensure the sealing surface, which is self-sealing. Most of the valve is sealed by force, that is, when the valve is closed, to rely on external pressure to force the gate valve to ensure the tightness of the sealing surface. Gate valve with the valve stem linear movement, called the lift rod valve also called clear shot valve. Often movements are trapezoidal threaded rod through the top of the valve guides and valve nut on the rotary motion into linear motion, which is the operating torque thrust into action. Open the valve, when the gate valve lift height equal to the diameter of the 1: 1 times, the fluid channel is completely smooth, but at run time, this position is not monitored. Actual use, is the apex of the stem as a sign that the fixed position, as its fully open position. Temperature appears to consider locking phenomenon, usually open to the vertex position, and then rewind 1 / 2-1 circle, as the position of the valve fully open. Therefore, the fully open position of the valve, according to the position of the gate is determined that the stroke. Some valve stem nut located at the gate, handwheel drive stem rotation, leaving the gate to upgrade, this valve is called the rotating rod valve or valve called the dark bar. Valve closure member Principle (ram) movement do fully open and fully closed off with a vertical path along the centerline. Valve selection Gate Valve is mainly used to cut off or turn on the line of medium, is generally not as a regulator or throttling. Category gate valve can be divided according to different classification methods: parallel gate valve, wedge gate valve, lift gate, rotary valve rod, fast opening and closing valve, necking valve, flat gate valve and so on. Valve fluid resistance characteristics, the applicable pressure, high temperature range, medium flow unrestricted, good sealing performance. Contact Shanghai-Valve Co., Ltd. Tel: 021-31263381 (Chen Gong) Fax: 021-60298264 Mobile: 13512135667 E-mail: xgfm021@163.com Address: Industrial Park, Jiading District, Shanghai Huating 1199