Do you know how to install the check valve

     Installation

     1.Swing check valve: valve type swing check valve cylindrical disk-shaped, around the seat of the shaft for rotation, because the valve channel into a streamlined, flow resistance than the small valve lift check, suitable for large caliber occasions in low flow and no flow frequently changing, but not for the pulsating flow, the sealing performance is less than lift. Rotary check valve sub unicuspid type,double valve type, and most of type three, three by the valve diameter to form the main points, the purpose is to prevent the media to stop the flow or back, the weakening of the hydraulic shock.

      2.Lift check valve: the valve body along the vertical centerline of sliding valve, lift check valves can only be installed in horizontal pipelines, the high-pressure valve on the small caliber ball valve can be used. Lift type check valve in the body shape and the samecut-off valve (with valve common), so it is more fluid drag coefficient. Its structure is similar with the valve, the valve body and valve with the same cut-off valve. The lower part of the upper valve and the valve cover processing guide sleeve, the valve guide Janefreely in the valve light oriented, when the medium downstream, the valve thrust open by the media, when the media stopped flow, the valve by the self - vertical landing on the seat, preventing the media from the upstream effect. Straight through lift check valve direction of medium inlet and outlet channel direction perpendicular to the seat; vertical lift check valve, the media import direction crossingchannel direction and the valve seat, the flow resistance is smaller than the straight through.

    3.Disc type check valve: valve around the valve pin rotating valve seat. Disc check valve structure is simple, can only be installed in horizontal pipelines, the sealing is poor.

Engineering Chain

    4.The pipeline valve: the valve body along the center line of the sliding valve. Pipeline valve is emerging as a valve, its small size,light weight, good processing, is one of valve development. But the fluid drag coefficient than the swing check valve slightly larger.

    5.Compression type valve: This valve is used as boiler feed water and steam off with a valve, it has a comprehensive function lift check valve and cut-off valve or angle valve.

     In addition, there are some do not apply to pump outlet check valve is installed, such as the end of the valve, spring type, Y type check valve.

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