Locating swing check valves away from elbows , equipment , etc . , within the piping system can often minimize or eliminate problems caused by this type of application 旋启式止回阀应该安装应该远离弯头等其它设备，这样通常可以减少或消除这些设备可能产生的问题。
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。
Velocity equations are included in the technical data section . when sizing swing check valves , the seat port velocity should be controlled within the general ranges specified below 《技术资料》内包括流速公式。在选择旋启式止回阀的通径时，阀座端口的流速应该控制在下列指定的一般范围内。
Valves may be sized to match existing lines , but swing check and stop - check valves should also be sized according to flow conditions for maximum service life 可以根据现存的相匹配的管线来确定阀门通径，但是旋启式止回阀和截止止回阀还应该根据最大限度延长使用寿命的流体状况来确定阀门通径。
For best performance swing check valves should operate with fluid velocity sufficient to hold the disc in a stable position off the seat or fully open against the disc stop 为了获得最好的性能，旋启式止回阀应该运行在流量速度足够将阀瓣稳定支撑在离开阀座的位置，或让阀瓣停止在全开的位置。
Tilting disc check valves are similar to swing check valves . in most installations , slamming is minimized upon reversal of flow so noise and vibration are reduced 翻转式阀瓣止回阀与旋启式止回阀类似。对于大多数安装的翻转式阀瓣止回阀，由于流体倒流造成的撞击程度最小，因此噪音和振动也有所减小。
Three factors should be considered when sizing swing check valves ; the pressure drop across the valve , the flow velocity of the fluid through the valve , and the location of the valve in relation to other piping components 在选择旋启式止回阀的通径时应该考虑到三个因素；通过阀门的压降，流体通过阀门的流速，与阀门其它管道部件的相对位置。
Like closing valves , fluid movements of check valve through the channel is narrow and therefore the lifting of check valve through the pressure drop kai xuan than some big - check valve , and the rotary kai - flow check valves are very few restrictions 像截止阀一样，流体通过升降式止回阀的通道也是狭窄的，因此通过升降式止回阀的压力降比旋启式止回阀大些，而且旋启式止回阀的流量受到的限制很少。
