Products Details

A Lift Check Valve (Lift Check Valve) is a valve used to prevent the reverse flow of media. The following are some descriptions of lift check valves in Chinese:

Product Description and Features:

The lifting check valve is mainly composed of a valve body, a valve disc, a spring, etc. It can be installed horizontally or vertically in various piping systems to prevent the reverse flow of media. Its advantages include small size, light weight, quick closure of the valve disc, small water hammer pressure, smooth flow path, small fluid resistance, sensitive action, good sealing performance. Mainly suitable for cleaning media, not suitable for pipelines containing solid particles and high viscosity media. It can be installed at the outlet of the pump to avoid water hammer, water hammer and destructive impact, to prevent reverse flow and protect the equipment, and has a good energy saving effect.
Main performance specifications:

Model: H71W-16T
Nominal pressure: 1.6MPa
Test pressure: 2.4MPa
Operating temperature: ≤200℃
Applicable media: water, steam, oil, etc.
Materials and connections:

Body material: QT400-15, 2Cr13, ZG1Cr18Ni9Ti, etc
Disc material: 25, 1Cr13, 1Cr18Ni9Ti, etc
Spring material: 50CrCA, 1Cr18Ni9Ti, etc
Connection mode: flange connection, butt welding connection, etc.
Design criteria:

Design standards include BS 1868, ASME B16.34, etc., for high pressure steam systems such as ethylene plants.
Installation and use:

The lift check valve must be mounted horizontally with the valve cover nut above. The working principle is that when the valve disc is lifted in the forward flow, the valve is opened; In reverse flow, the disc falls on the orifice and closes the valve. This valve is gravity assisted and has no spring or elastomer.
Scope of application:

Suitable for small and medium diameter pipes, requiring strict sealing. It can only be installed on horizontal pipes and has the advantages of high stability and long life.