Show Posts
1
Pumps, Wells, Tanks, Controls / Re: Required Pump Size with CSV
« on: May 28, 2013, 06:46:41 PM »
I'm experiencing this same phenomenon with my new PK1A installation.
I re-used an existing Flotec 4332 pump that had no pressure tank, so it only worked without constantly cycling (at 30/50 psi) with a precise number of sprinkler heads turned on. This was inconvenient to say the least and useless for hand watering or anything else. I mounted my Pside-Kick on the wall, tank hanging below and plumbed to the pump with PVC and removed the Flotec pressure switch completely. Seems to work well so far in limited testing.
At low flows the pump gauge will often read up to 85 psi and when I shut off the sprinkler the pump will exceed 90 psi as the tank is filled. The pressure switch will cut off the motor correctly and the two gauges will agree within a couple of psi that the system pressure is roughly 60 psi. So I think the pump gauge is approximately correct. I've never have the 75 psi relief valve open.
This sounds like normal operation but my concern is that I'm sort of dead heading the pump beyond its ratings. I can't find anything in Flotec's documentation that confirms this, though, so I just don't know.
I re-used an existing Flotec 4332 pump that had no pressure tank, so it only worked without constantly cycling (at 30/50 psi) with a precise number of sprinkler heads turned on. This was inconvenient to say the least and useless for hand watering or anything else. I mounted my Pside-Kick on the wall, tank hanging below and plumbed to the pump with PVC and removed the Flotec pressure switch completely. Seems to work well so far in limited testing.
At low flows the pump gauge will often read up to 85 psi and when I shut off the sprinkler the pump will exceed 90 psi as the tank is filled. The pressure switch will cut off the motor correctly and the two gauges will agree within a couple of psi that the system pressure is roughly 60 psi. So I think the pump gauge is approximately correct. I've never have the 75 psi relief valve open.
This sounds like normal operation but my concern is that I'm sort of dead heading the pump beyond its ratings. I can't find anything in Flotec's documentation that confirms this, though, so I just don't know.