check valve selection of recommended

check valve choice most of the check valve is based on the smallest impact closing pressure or no need close speed and its speed characteristics do qualitative appraisal to choose. This method does not necessarily accurate, but according to experience, results can be acceptable in most use cases.

。 Non-compressible fluid with check valve. Check valve for non-compressible fluid, mainly based on its cause sudden closure in closing won't go back and lead to unacceptable high shock pressure performance for choice. Will be chosen for Industrial Valves of low pressure drop to use such a valve, usually only for the second step is to consider. For the check valves, the first step is to need the closing speed of assessment, the second step is to choose could meet the need of the types of check valve closing speed.

b。 The compressibility of the fluid with the check valve. Despite the compressibility of the fluid situation chooses the disc check valve is aimed at the impact of reduced to the lowest degree, but can use check valves according to non-compressible fluid similar selection method to select, but very large pipelines, the impact pressure of the compressibility of medium can also become very considerable.

if the medium flow range is very large, the check Industrial Valves can be used for compressible fluid speed reducer, this device in closure of the entire process of displacement, work, in order to prevent the rapid succession of hammer on port department.

if the medium flow continuously fast to stop and start, as the export of compressor, the use of lift check Industrial Valves, the check valve, a spring load of lightweight disc, the valve lift is short.

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