Install swing check valve and nozzle check valves

Select the correct meaning and principles of the check valve in the hydraulic system pump, check valve plays a very important role, but it also brings a lot of trouble. Central power plants such as the UK, 16% of accidents are caused by a non-return valve which  Instrument valve manifolds  leaving the pump check valve closed water hammer accident rate is highest. Such water hammer strength not only by the impact of the entire hydraulic system, but also by the characteristics of the check valve itself. Out of the two three pumps in parallel springs station system that they  Stainless steel needle valve  at the outlet of the pump swing check valve and nozzle check valves, two pumps working conditions are identical, while three parallel pumps have a when the pump stops unexpectedly, two kinds were measured downstream of the check valve of the water hammer pressure variation parameter curve shows characteristics of the valve itself has a great impact on the water impact strength, therefore, of a particular line, the correct choice pump check valve is particularly important.