High pressure check valve structure and installation method

1. High-pressure check valve disc is disc-shaped, around the seat of the valve shaft for rotational movement, because of the valve into the streamline linear flow resistance than the butterfly check valve, suitable for low flow and flow Not often change the occasion of large-caliber, but not for pulsatile flow, high-pressure non-return valve sealing performance than the lift check valve. Butterfly check valve single-valve, double-valve and most of the three, these three forms are mainly based on the valve caliber, the purpose is to prevent the media stop flowing or backwards, weakened the hydraulic impact. 2. High-pressure check valve sliding along the valve body vertical center line check valve, the female check valve can only be installed on the level of the pipeline, in the high-pressure small-caliber check valve flap can be used ball. Butterfly check valve body shape and the same cut-off valve (common with the cut-off valve), so it has a larger fluid resistance coefficient. High-pressure check valve structure and cut-off valve similar to the valve body and valve with the same cut-off valve. The upper part of the valve plate and the lower part of the valve cover are machined with a guide sleeve which is simple and can be freely guided and guided by the valve guide. When the medium flows downstream, the valve plate is opened by the medium thrust. When the medium is stopped, Drop falling on the valve seat, play a role in blocking the media countercurrent. Straight through butterfly check valve medium inlet and outlet channel direction and seat channel vertical; vertical lifting check valve, the media import and export channel direction and valve seat channel in the same direction, the flow resistance than the straight-through small. 3. High-pressure check valve is a check valve around the valve pin rotating seat. Disc check valve structure is simple, can only be installed on the horizontal pipe, sealing better. 4. High-pressure check valve is the valve along the valve body centerline sliding valve. Pipeline check valve is a new type of valve, its small size, light weight, good processing technology, is one of the development direction of the check valve. But the fluid resistance coefficient is slightly larger than the swing check valve. 5. High pressure check valve is for boiler feed water and steam cut off the valve, it has a lift check valve and globe valve or angle valve of the integrated function. In addition, there are - some do not apply to the pump outlet installed check valve, such as the end of the valve, spring, Y-type check valve.

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