Gate valve has a long history, until now has spread to all over the world, like DN300mm below, still dominant position in all kinds of valves. Opening and closing a gate valve is ram, ram movement direction perpendicular to the direction of flow, gate valve can only be fully open and close, not to adjust and throttling. Its main characteristic is errands before and after the valve plate pressure valve plate force pressure on the export on the right side of the seat, sealing better, and fully open, because the valve plate not stay on the flow, pressure loss is small, so is popular among the masses of users. Gate valve operating torque, operation is easy to make the valve body, valve stem damage, special is large-diameter gate valves. Shape, size and weight is big also, DN1000 caliber gate of about 3200 mm high, need four operations, so the gate to the individual application in small diameter, namely below DN500 use. Beside the gate Industrial Valves working condition in the opening, the valve plate is to rely on both sides of the guide rail support, full close cooperate closely, while the middle position, the valve plate and guide rail gap is big and vibrate. Gate valve in use for a period of time, it is necessary to detect the valve, to test whether the flange connection part of the flange gasket sealing and damage, damage can contact the manufacturer change the flange gasket, replace gate Industrial Valves flange gasket needs to follow the following basic principles, materials and tools should be prepared, meet the relevant technical requirements and main points: 1, the preparation work: (1) material: butter, cotton yarn, liquid leakage and sealing gasket; (2) tools: wrench, screw whorls. 2, operation steps: (1) remove flange bolts, remove the valves or move to let the cat out of the end section. Remove old gasket seal face; (2) choosing the appropriate gaskets, a layer of butter evenly on both sides; (3) the seal cushion between two flanges sealing gasket, aim at two flange and bolt hole, into the bolt, screw nut, uniform points repeatedly diagonal tighten nut. Bolt nut length 2 - 3 it is advisable to pitch. Flange gasket after the installation, should do after work pressure test for qualified without leakage. 3, technical requirements: (1) should be careful operation, to prevent damage to the flange; (2) completed, tools for cleaning and maintenance. 4, the installation of the gasket points: (1) choose the right: the form of flange, bolts, gaskets, the material, the size should be according to the operating conditions and the flange surface structure equipped with appropriate; (2) check the fine: carefully before installing the checks on the quality of flange, bolts, nuts, washers, should be no burr, uneven, crack defects, etc. Carefully check the flange, pipe installation, should be unbiased, wrong, wrong hole mouth mouth phenomenon; (3) wash: flange sealing surface must be clean, bolt, gaskets shall not be with the impurities, grease, etc. ; (4) pack is: in gasket should be one of pipe or tube; (5) on the well: installation bolt, nut application force uniform, tighten the points repeatedly symmetry.
Shenzhen Mech Valve Trading Co., Ltd. promises that we will manufature our products in accordance with the strictest quality standards.
Shenzhen Mech Valve Trading Co., Ltd. builds value for our investors through the strength of our customers’ satisfaction and by consistently producing superior operating results.
First, in sparking the initial idea for a company based on manufacturing technology; and second, in designing a solution that could meet a clear market need for solving issues related to wedge gate valve os gate valve.
According to the market analysts, exports from Shenzhen Mech Valve Trading Co., Ltd. facilities in China will exceed the forecast.