Ballvalve
General Engineering Contractor
I have 4500 feet of 1.5" pvc running up a mountain to a static tank servicing a few lots. No pressure tank, on a timer.
I get the classic shockwave pulse at pump shutoff, but I am letting a pressure relief valve for the moment blow off the wave.
Such is a case where a spring loaded ball cone check valve every 500 feet would kill the spikes, and divide them up into much smaller and less damaging spikes. As you know, the pump Mfgr's. want a check valve every 400 feet or so. Its an old fight.
Yes, I know - reduce the flow rate at shut off and the spike goes away, mostly - csv anyone? But in my case I cannot do that. And I dont want the burden of 5 check valves hidden in the forest either. I suppose a bag in a can is in my future.
I get the classic shockwave pulse at pump shutoff, but I am letting a pressure relief valve for the moment blow off the wave.
Such is a case where a spring loaded ball cone check valve every 500 feet would kill the spikes, and divide them up into much smaller and less damaging spikes. As you know, the pump Mfgr's. want a check valve every 400 feet or so. Its an old fight.
Yes, I know - reduce the flow rate at shut off and the spike goes away, mostly - csv anyone? But in my case I cannot do that. And I dont want the burden of 5 check valves hidden in the forest either. I suppose a bag in a can is in my future.