LNG cryogenic LNG cryogenic gate Industrial Valves gate valve product introduction

LNG gate is mainly composed of valve body, valve seat, disc and stem, disc movement direction and perpendicular direction of flow. Gate valve through the seat and disc contact and two-way seal, seal face often overlaying welding metal materials in order to increase wear resistance, such as welding 1 cr13, STL6, stainless steel, etc. Disc has a rigid disc and flexible disc, depending on the gate, gate valve gate valves can be divided into rigid and flexible gate valves. Wedge gate valve of the damper can be made into a whole, is called a rigid disc; Can also make it generates trace of deformation of ram, in order to improve the manufacturability, make up for the sealing surface Angle in the process of our processing deviation, this damper is called elastic disc. General adopt compulsory seal gate valves, namely the rely on outside force forced the ram pressure to the valve seat, to ensure the sealing surface sealing. The gate valve gate, linear motion, with the stem called lifting lever gate, also called rising stem gate valves. Usually in lifting lever on the trapezoidal thread, through the valve at the top of the nut and guide groove on the valve body, the rotation movement into linear motion, which is the operating torque thrust into operation. Some gate valve, the valve stem nut is located in the gate, the hand wheel rotation drive the valve rod rotation, and make the disc, the valve is called rotating lever gate, or non-rising stem gate valves.

LNG cryogenic valve

LNG valve belongs to compulsory sealed valve, the valve is closed, must be pressure on the disc, to force a sealing surface does not leak. When the medium from the disc below to the valve, operating force needed to overcome the friction resistance is stem and packing with the thrust produced by medium pressure, close the valve force stronger than open the valve, so it's bigger, the diameter of the stem or stem top bending failure happens. According to the connection mode classification, cut-off valve can be divided into flange connection, threaded connections, three kinds of welding connection. Valves in China & other; Order to & throughout; Has rules, the flow of cut-off valve, shall be applied. The cut-off valve opens, the opening of the disc height is 25% ~ 30% of nominal diameter, maximum flow, said Industrial Valves to full open position. So stop valve fully open position, should be determined by disc's schedule. Globe valves can be used to control air, water, steam, all kinds of corrosive medium, mud, oil, liquid metal and radioactive medium, etc. All types of fluid flow. Therefore, this type of globe valve valve closure is very suitable for as a cut or adjust and throttling. Due to open or close the valve stem travel relatively short, and very reliable cutting function, and due to the change of his seat and disc stroke proportional relationship, is very suitable for the traffic regulation.

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There are different types of , mainly resilient gate valve and resilient valve.
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