The gate valve opening and closing parts of the ram, the ram direction of motion perpendicular to the direction of flow, the gate valve can only be fully open and fully closed, can not be adjusted and throttle. 
 Pao-teh valves - gate valve family of products: flange gate valve Z41H - manual valve, American Standard valve the Z40H electric gate valve Z941, Z641, of the pneumatic gate valve gear drive valve Z442, Z441, bevel gear transmission gate valve Z542, Z541. The insulation Gate Valve BZ41H. Two streams gate valve LXLZ971/3H. High-temperature slagging gate valve. The fluorine gate valve Z41F/Z41F46. Z41H - high temperature and high pressure gate valves Z41Y, Z61Y, high-temperature gate valve Z61Y-P54/P55/P57/160V/200V250V/320V Z41Y, Z61Y, high pressure gate valve, Z61H, high temperature and high pressure butt welding gate valve Z61Y-P54/P55/P57100V / 140V/170V, Z61, self-sealing valve Z61Y. Resilient seated gate valves, gate valves fire signal, buried in a resilient seated gate valve RVCX RVHX, RRHX, RVEX, RRHN, RVHS. The knife gate valve PZ73H. Within threads gate valve Z11W. Flanged gate Z41H -. Differential oil seal wedge gate valve CYZD40H. Automatic leveling KPTYZ42H oil seal gate valve, anti-sulfur leveling Seal gate valve KPTYZ42H-16/25/40. Bellows valve WZ41H. Vacuum isolation gate valve NKZ44H NKZ41H, NKZ61H NKZ64H, water seal gate valve DSZ64H DSZ44H. The emptying guide shower valve Z41W/Z61H. The sewage Gate Valve PZ48H/PZ44Y. Flat gate valve, double parallel gate valve with diversion hole flat gate ZF23Y/ZF83Y/ZF43Y/ZF63Y. DZ41 low-temperature gate valve, rising stem gate valve Z41T Z45T of rising stem gate valve wedge gate valve, brass gate valve Z11W-16T, cast iron gate Z45T-10Z, carbon steel gate valve Z41H - 16C, forged steel gate valve, stainless steel valve Z41W-16P, chrome-molybdenum steel gate valve Z41Y-16I, chromium molybdenum vanadium steel gate valve Z41Y-16V. 
 The imports gate valve gate valve structure diagram gate valve details of the standard gate valve gate valve model gate valve for the / Application gate valve gate valve price list valve works gate valve installation schematic gate valve specifications gate valve internal structure 
 Body material: cast iron, cast steel, stainless steel, forged steel, chrome molybdenum steel, chromium molybdenum vanadium steel, brass, sealing surface material: H, F46, Y, W, T, G,. Working pressure 1.6-32MPA The working temperature of -196 ° C to 550 ° C. Valve size DN 15-DN600. Connection method: flange, welding, internal thread. Transmission: manual, spur gear, bevel gear, pneumatic, electric. Applicable medium: water, oil, gas, steam, acids. Manufacturing standards: GB, American standard, Japanese standard, German standard. 
 Gate two sealing surface, the most common mode of gate valve sealing surface formed two wedge, the wedge angle with the valve parameters, usually 50, the medium temperature is not high, 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid damper; trace deformation of the gate can also be made to improve their craft, to make up for the sealing surface angle deviation in the process, this The gate is called the elastic damper. 
 Type of gate valve, the sealing surface configuration can be divided into wedge gate valve and parallel gate - gate valve wedge gate valve can be divided into: single-ram type, double plate and the flexible gate type; parallel to the gate The plate valve can be divided into single-ram type and double plate. According to the valve stem threads are divided into rising stem gate valves and rising stem valve two. Valve closed, the sealing surface can only rely on media pressure to seal, that is, the medium pressure to the sealing surface of the ram pressure to the other side of the seat to ensure the sealing surface of the seal, which is self-sealing. Most of the valve is sealed by force, the valve is closed, we have to rely on external force to the ram pressure to the valve seat to ensure that the sealing surface of the seal. 
 Gate valve with the valve stem with a straight-line movement, called the lift rod valve (also called clear shot valve). Usually lift rod with trapezoidal thread, the rotary motion into linear motion through the valve at the top of the nut and the guide groove on the body, that is, the operating torque thrust into action. 
 Open the valve, gate valve lift height equal to the valve diameter of 1:1, the fluid channel is completely smooth, but at run time, this location can not be monitored. Actual use, is the culmination of the stem as a symbol, which means that the fixed position, as its fully open position. Temperature appears to consider locking phenomenon, usually open to the vertex position, then back 1/2-1 circle, as the fully open valve position. Therefore, the valve fully open position, to determine the location of the gate (ie, travel). Some valve stem nut is located at the gate, turn the hand wheel to drive the turning of the stem, leaving the gate valve lift, this valve is called the rotating rod valve or call the dark bar gate. 
 Valve has the following advantages: 1. Small fluid resistance, the sealing surface is distressed by the media to brush and erosion. (2) open and close more effort. 3 medium flows unrestricted, non-spoiler, not reduce the pressure. Form simple, short length of the structure, good manufacturing processes for a wide range. Valve defects are as follows: (1) between the sealing surface is easy to cause erosion and abrasion and maintenance more difficult. Dimensions, open space, opening and closing a long time. (3) the more complex structure. 
 Valve installation and maintenance should note the following: 1. Hand wheel, lever and the transmission mechanism does not allow for lifting with, and are prohibited from the collision. 2 Gate Valve should be installed vertically (ie, stem in a vertical position, the hand wheel at the top). The valve opening should be preceded with a bypass valve to open the bypass valve (to balance imports and exports and reduce the pressure opening force). (4) with the transmission mechanism of the valve, and require the installation according to product instructions. If the valve is often switches to use, at least monthly lubrication once. 
 Resilient seated gate valve characteristics: a long time on the market in general gate valve widespread phenomenon of water leakage or rust, this enterprise is the introduction of the European high-tech rubber and valve manufacturing technology in the production of resilient seated gate valves to overcome the general gate bad valve seals, rust and other defects, resilient seated gate valves, flexible gate to generate the compensation effect of micro-elastic deformation to achieve a good seal, the valve switch lightweight, reliable sealing, elastic good memories and life has significant advantages . 
 Pao-teh gate valve has been widely used in petroleum, chemicals, liquefied petroleum gas, to drainage, food, pharmaceutical, power generation, boilers, steam systems, mining, urban construction, municipal, and other fields, as well as the daily lives of residents. Pao-teh, products sold throughout the country, high quality, efficient service, won the trust of users and the widespread praise.