Stainless steel high pressure ball valve door principle

by:AIRWOLF     2020-05-17
Stainless steel high pressure ball valve door principle it is 90 degrees of rotation movement, the cock body for a sphere, a round hole or tunnel through its axis. Ball valve in the line is mainly used to do door stop, distribution, and change the flow direction of medium, it just has to rotate 90 degrees of operating and small rotational torque can be closed tightly. Ball valve door using the most appropriate do switch, cut off valve, ball valve door but recent development have designed to make it with throttling and control flow, such as v-shaped ball valve gate. Role: ball valve door in the line is mainly used for cutting, distribution, and change the flow direction of medium, designed to V open ball valve door also has a good flow regulating function. A, with the way the product is suitable for use in chemical, petrochemical, petroleum, the papermaking, mining, electricity, liquid gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronic industry, urban construction and other fields. Second, the main performance parameters of 1; Connection: thread, flange, welding, 2; Drive mode: manual, worm gear, gear transmission, pneumatic, electric and other 3; Diameter from DN15 - DN600; Pressure from 1. 0MPA- 42MPA; The temperature - 100℃- 600℃ 4; Material: forged steel, 316 stainless steel 304, stainless steel, stainless steel 316 l 5; Three-way or four-way valve door on the pipe not only can the confluence of flexible control medium, shunt, and the flow switch, at the same time also can close any channel and make the other two. Three, the structure characteristics of 1, the doors open and close the valve has a lock hole position can be based on user requirements, prevent the non-working personnel wrong operation. 2, set up the steps at the bottom of the valve rod, not valve gate abnormal pressure rise out the valve rod. 3, quick, flexible for opening and closing switch, long life, safe and reliable. 4, pneumatic, electric ball valve door remote centralized control, and can meet the need of a computer program. 5, fire prevention, anti-static excellent performance. Fluid resistance small, full size of ball valve door little flow resistance. Simple structure, small volume, light weight. The compact and reliable. It has two sealing surface, and the widely use of all kinds of plastic ball valve sealing surface of the door materials, good sealing, can realize completely sealed. Have been widely used in the vacuum system. Easy to operate, open and close quickly, from open to close just rotate it 90 & deg; To facilitate remote control. Convenient maintenance, simple ball valve door structure, sealing ring, which generally remove replacement is more convenient. In full open or full close, sphere and valve seat sealing surface and the dielectric isolation, medium through, does not cause ball valve sealing surface erosion. Applicability is wide and size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied. As ball valves in the process of opening and closing doors have wiped sex, so can be used to bring in the medium of suspended solid particles. Five, the ball valve door installation note: ball valve in the closed door, inside the valve body remains under pressure fluid before repair, remove line pressure and make the ball valve door in the open position before maintenance, disconnect the power supply or source maintenance, will be away from the bracket must first find out the ball valve actuator on the door, the downstream piping have indeed after unloading the pressure, to remove the manipulations of decomposition and assembly again when the sealing surface of the parts, must be careful to prevent injury especially non-metal parts, remove the o-rings of inappropriate use of special tools assembly flange bolts must be symmetrical, step by step, tighten the cleaner should be evenly with ball valve door in rubber parts, plastic parts, metal parts and working medium ( For example, gas) Are incompatible. Working medium is gas, can use gasoline ( GB484 - 89). Clean the metal parts. Non-metallic parts clean with clean water or alcohol decomposition down individual parts can use dip way to clean. Still left did not break down the non-metallic metal parts can be fine clean clean immersion cleaner silk ( In order to avoid fall off fiber adhesion on the parts) Scrub. When cleaning should remove all adhesion on the surface of grease, dirt, plastic product, dust and other non-metallic parts shall be immediately removed from the cleaning agent, after cleaning shall not soak for a long time after cleaning after wash wall cleaning agent to volatilize and ( Available not soak cleaner silk cloth to wipe) Are assembled, but shall not be shelved for a long time, or it will rust, dust contamination new parts also need to be cleaned before assembly using grease lubrication. Grease should be with ball valve door metal materials, rubber parts, plastic parts and working medium are incompatible. Working medium is gas, available for example 221 grease. Besmear in seal installation groove on the surface of a thin layer of grease, apply a thin layer of grease on the rubber seal, valve stem seal face and friction surface coated with a thin layer of grease assembly time should not be allowed to have metal scraps, fiber and fat ( With the provisions of the exception) Dust and other impurities, foreign bodies, such as pollution, adhesion, or stay on the parts surface or into the lumen
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