HQ44The micro resistance spherical check valve adopts rubber covered ball as the valve disc. Under the action of medium, t can roll on the slide way in the valve body to open or close the valve. Large flow rate, small flow resistance loss, good sealing performance and noise elimination closing can reduce water hammer wave. It can be installed horizontally or vertically. HQ44 micro resistance ball check valve can be used at the outlet of water pump in cold water, hot water, industrial and domestic sewage pipe network to prevent medium backflow.

HQ44XSingle ball micro resistance ball check valve and hq45x double ball micro resistance ball check valve all adopt rubber covered ball as valve disc. Their principle is that under the action of medium, they can roll back and forth on the slide way in the valve body, so as to open or close the valve. The main features of hq44x single ball micro resistance spherical check valve and hq45x double ball micro resistance spherical check valve are large flow rate, small flow resistance pressure loss, good sealing performance, noise elimination and closing, which can reduce water hammer wave. It can be installed horizontally or vertically. The micro resistance ball check valve can be used for water pump outlet of cold water, hot water, industrial and domestic sewage pipe network to prevent the backflow of medium. In order to prevent reverse flow of medium, check valve should be installed on equipment, device and pipeline

 

​HQ44XMain 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

止回阀的安装应注意以下事顶
1、在管线中不要使止回阀承受重量，大型的止回阀应独立支撑，使之不受管系产生的压力的影响。
2、安装时注意介质流动的方向应与阀体所票箭头方向一致。
3、升降式垂直瓣止回阀应安装在垂直管道上。
4、升降式水平瓣止回阀应安装在水平管道上。