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Zul

New Member

1

Sunday, March 6th 2016, 10:41am

Newbie question - Check valve

I have a 1 hp Flotec FP5162-08 controlled by an anolog intermatik timer box with a back yard canal as my source ( Florida). I has five zones with anywhere from 4 - 8 sprinklers in each zone. I initially noticed that I was loosing pressure in one zone, however if I cycled the all the zones, on the second run the problemed zone work fine.

Now I am loosing pressure in all zones in quite the same manner. Could this signal that the attached check valve has gone bad?

I have admit that I have noticed some air in the system, but not more than was experienced when system was fully functional. Also when I disconnect the union attachment after the pump, I am able to get very good pressure after a a couple seconds incremential increases ( Water flow starts off low then gradually gets stronger)

My system

This post has been edited 3 times, last edit by "Zul" (Mar 6th 2016, 11:00am)


Wet_Boots

Supreme Member

Posts: 5,255

Location: Metro NYC

2

Monday, March 7th 2016, 10:52am

Is there any intake screening to get clogged?

Zul

New Member

3

Monday, March 7th 2016, 1:30pm

Check valve?

Is there any intake screening to get clogged?
Not that I am able to see from my vantage point at the edge of the canal. I was trying to rule out everything else before having to go in the canal. Also I was able to excellent flow when I disconnected the pipes at the union after the pump ( even thought it was a gradual build up).

Wet_Boots

Supreme Member

Posts: 5,255

Location: Metro NYC

4

Tuesday, March 8th 2016, 10:34am

Assuming you have eliminated leaks from broken pipes in the system, you are looking at the pump more than anything else. Intake blockage causes poor performance. Suction line leaks also cause poor performance. Seeing any air bubbles in the water when the outlet union is disconnected?

Another possibility might be index valve performance, if it isn't sealing completely, and allowing some water to escape into zones other than one that should be receiving all the water. Index valves are almost unknown outside of Florida, but I've encountered one or two, and opening them up and checking inside is not too difficult.

Coldstone

Unregistered

5

Wednesday, March 9th 2016, 6:30pm

Pump Prime loss

I continue to lose Prime on my sprinkler pump. I can hear the water gurgle when I secure my pump and when I close the discharge valve it stops. I recently replace all my valves with anti-syphon valves but it still didn't work. I have checked my suction check valve and replaced it. Suggestions?

Wet_Boots

Supreme Member

Posts: 5,255

Location: Metro NYC

6

Wednesday, March 9th 2016, 7:19pm

RE: Pump Prime loss

I continue to lose Prime on my sprinkler pump. I can hear the water gurgle when I secure my pump and when I close the discharge valve it stops. I recently replace all my valves with anti-syphon valves but it still didn't work. I have checked my suction check valve and replaced it. Suggestions?
You need to start a separate thread on your situation. Once you have done that and have returned here to delete your post, I can help you. We need to keep things separate, or mass confusion will result.

Zul

New Member

7

Thursday, March 10th 2016, 8:02pm

Solution !!

I very happy to report that I have my system up and running. Now even better than before. I removed the union joint from before the intake of the pump and that did the trick. Thank you very much for your assistance and help brainstorming :).

I am sure that I will have more questions in the future, particularly with my index valve. But that will be for another day.

Thanks again.

Wet_Boots

Supreme Member

Posts: 5,255

Location: Metro NYC

8

Thursday, March 10th 2016, 9:03pm

Congratulations on your success. That union was acting as a suction line leak.

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