HQ45XThe wear-free spherical check valve adopts rubber covered ball as the valve disc. Under the action of medium, it can roll on the slide way in the valve replacement, so as to open or close the valve. With large flow rate, small flow resistance loss, good sealing performance, noise elimination and closing, it can reduce water hammer wave. It can be installed horizontally or vertically. It can be used for water pump outlet of cold water, hot water, industrial and domestic sewage pipe network to prevent medium backflow.

HQ45XMain dimensions of non wear ball check valve（mm)
Nominal diameter	200	250	300	350	400	450	500	600	700	800	900	1000
L（mm）	550	650	750	850	950	1050	1150	1350	1450	1650	1900	2100
H（mm）	510	570	640	715	815	825	980	1155	1260	1350	1660	1700

 

 

 

 

 

Check valve installation should pay attention to the following matters
1. In the pipeline, do not make the check valve bear the weight, large check valve should be independently supported, so that it is not affected by the pressure produced by the pipeline system.  
2. During installation, the direction of medium flow should be consistent with the arrow direction of valve body.  
3. Lift type vertical disc check valve shall be installed in vertical pipeline.  
4. Lift type horizontal disc check valve shall be installed on horizontal pipeline.