Checkvalve should be installed in the bottom of suction pipe of pump to make sure operation is prompt.
泵吸入管路底部应安装截止止回阀,确保其操作灵活。
2
Add the resistance in the outlet to lower the capacity. Check the resistance in the suction pipe of pump. Check the bottom valve and lower the high of suction position.
增加出水管阻力以减低流量,检查泵吸水管内阻力,检查底阀减小吸水高度。
3
Installations with suction lift require a good quality foot valve to avoid loss of prime - remove in-built check valve.