stainless steel check valve is one of the material is stainless steel Industrial Valves series. Common types include: H41W H42W, H44W, H71W, H76X, etc. This type of valve is to rely on the force created by the flow of the medium itself in the line of open and close automatically, belongs to a kind of automatic valve. Stainless steel check Industrial Valves can be divided into lift check valve, stainless steel swing check valve, stainless steel vertical stainless steel check valve and so on.

stainless steel check valve used for pipeline system, stainless steel check valve is the main role is to prevent the backflow medium, to prevent the pump and its pattern in reverse driving voltage, and the discharge of the containers within the medium. Stainless steel check valve can also be used to give the pressure could rise to more than the main system of auxiliary system supply piping. Stainless steel check valve according to different materials, the pipeline can be applied to a variety of media. Check Industrial Valves installed in the pipeline, that is, to become a full line of fluid components, one of the valve opening and closing process will be affected by it in system is influenced by transient flow state; On the other hand, the disc in closing feature and have hair effects on fluid flow state. Working characteristics of the check valve is the load change is big, small open-close frequency, one in closed or open, apply cycle is very long, and does not require moving parts movement. But once again & other; Switch & throughout; Request, you must move the flexible, this is one of the more common mechanical movement is more demanding. Due to the check valve in the most practical use, qualitatively determine for fast shut down, and at the instant of the check valve is closed, the medium is a direction, with the disc in closing, the medium from the rapid rate of maximum back down to zero, while the pressure rise rapidly, which produce the possible damage to pipeline system & other Water hammer & throughout; Phenomenon. For more than one pump in parallel for high pressure pipeline system, the check valve water hammer problems become more prominent. Water hammer is one of the pressure transient flow in the pipeline pressure wave, which is caused by the change of the fluid velocity in pressure piping pressure jump or fall rise of the hydraulic impact phenomenon. Its physical reason is that the incompressibility of fluid, fluid motion inertia and elastic pipe combination results. In order to prevent water hammer in pipeline risk, over the years, people in the design of the check valve, adopted some new structure, new material, the guarantee of the check valve is applicable for the performance at the same time, minimize the impact of the water hammer has achieved gratifying progress.

stainless steel check valve categories:

stainless steel check valve check valve is only allowed to medium flows in one direction, the direction and stop the flow. This valve is normally automatic work, in a direction of flow of fluid pressure and valve opening; In the opposite direction of fluid flow, the fluid pressure since the overlap of the disc and the disc on the seat, thereby cutting off flow.

swing check valve

swing check valve with the humble hinge institutions, there is also a disc freely like door on the tilt of the seat surface. In order to ensure that each disc to seat the appropriate location, in valve design hinge agencies, so that the disc with enough space of a swing, and real, comprehensive, and the valve seat contact. All disc can be made from metal, can be embedded in the metal on leather, rubber, or synthetic coverage, depending on the use of performance requirements. Swing check valve in the fully open conditions, almost unimpeded fluid pressure, so the pressure drop across the valve is relatively small.

lift check valve

lift check valve disc is located in the body seat sealing surface. In addition to this check valve can be freely valve movements, like the rest of the cut-off valve, fluid pressure from the valve seat sealing surface lift, medium return led to the disc back to seat, and cut off the flow. According to the conditions of use, valve can be all-metal structure, it can also be embedded in disc shelves rubber mat or rubber ring form. Like a cut-off valve, fluid through the lift check valve channel is narrow, so the lift check valve through the pressure drop than the swing check valves are bigger, and swing check valves are very few restrictions.

H76X, H77X disc check valve

disc around the seat of pin shaft rotate within the check valve. Disc check valve has simple structure, can only be installed in horizontal pipe runs, poor sealing classification

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