Swing check valves can be adversely affected by turbulence if placed too closely to other piping components such as pumps, control valves, meters, reducers, tees, elbows, etc.

• 如果过于靠近其它管道部件，如泵，控制阀，仪表，收缩管，三通，弯管，等等，旋启式止回阀可能会被湍流反作用。