utorak, 23.05.2017.
Installations of Lift Check Valves
Product features of lift check valves
1, product is designed and manufactured according to GB12236 design standards, has reasonable structure, reliable sealing, beautiful appearance.
2, the valve seat sealing surface has Stellite surfacing cobalt based alloy, wear resistant and heat resistant, anti abrasion performance and long service life.
3, can use a variety of piping flange standards and flange sealing surface type, to meet the needs of various engineering and user requirements.
4, valve material range, packing and gaskets are in accordance with actual conditions or user requirements reasonable selection, can be applied to a variety of pressure, temperature and medium conditions.
5, Disc rotated around the valve seat outside the pin, reduce the sharp impact when closing.
6, Pin shaft and valve connection, the use of built-in pin structure, reducing leakage points, the use of more reliable.
Method for mounting lifting check valve
1, the valve lift check valve of the disc valve seat is rotated around the channel axis, because the valve channel into a streamlined, flow resistance than the small rise butterfly valve, suitable for large caliber occasions in low flow and no flow frequently changes, but not for the pulsating flow, the sealing the performance is less than lift. Butterfly check valve is divided into single, double flap and most of the three kinds, these three forms are mainly divided into the valve bore, the purpose is to prevent the media to stop flow or reverse flow, reduce hydraulic impact.
2, lift check valve: disc along the valve vertical centerline of the check valve, the internal thread check valve can only be installed on the horizontal pipe, in the high pressure small caliber check valve, the valve can be ball. Butterfly check valve body shape is the same as the cut-off valve, so it has a larger coefficient of fluid resistance. The structure is similar to the cut-off valve, the valve body and the disc are the same as the cut-off valve. The lower part of the upper valve and the valve cover processing guide sleeve, the valve in the valve lift free guide simple light driven, 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.
3, lift check valve: disc is rotated around the valve seat in the pin of the check valve. The disc type check valve is simple in structure and can only be installed on the horizontal pipe. It has good sealing performance.
4. Lift check valves: Valves sliding is along the centerline of the valve. Pipe type check valve is a new kind of valve. It has small size, light weight and good processing technology. It is one of the developing directions of check valve. But the coefficient of fluid resistance is slightly larger than that of the swing check valve.
5, compression type check valve: This valve is used as boiler water supply and steam cutting valve, it has lift check valve and stop valve or angle valve comprehensive function.
For more information about sanitary valves, please visit http://www.adamantvalves.com/sanitary-check-valves.html
Oznake: check valve
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