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cjosvai

New Member

1

Tuesday, April 2nd 2019, 4:14pm

Pressure issues...completely lost

Hi All
I have a pretty old system (20 years) at the new house we just purchased and it has me lost. When I turn on the test mode, Zone 1 operates well, with strong pressure. Zone 2, seems to operate fine when the water to the irrigation is turned on, but if it sits for a day or so and I run the system in something like test mode, the pressure has gone way down. If I manually turn on the zone, it works very well. Zone 3, for the front landscaping and side yard has about as minimal of pressure as I have seen. Although when I manually open the valve I get full pressure. Then when it runs off the timer, hardly any. Is that a sign of a bad solenoid? Finally my back, Zone 4. This zone was working very well with high pressure. Now there is minimal pressure to the entire zone. Even if I try to manually turn on, no change. Someone suggested a faulty control panel since zones 2 and 3 operate very well when they are manually turned on directly from the valves. I am lost guys and would appreciate any insight.

Thanks!

mrfixit

Moderator

Posts: 2,343

Location: USA

2

Wednesday, April 3rd 2019, 12:33am

Whoever told you the problem is the controller, ignore them.

Are you getting your water from the city or from a pump/well?

Is there a pressure regulator on the sprinkler system?

If you're on city water and no regulator or filter that can have a screen to clog, then the valves are bad. Repair or replace them. If you want to post pictures of your valves, go to www.tinypic.com, upload your pics there one at a time. Each time cut n past the "forum" code adding it to your post. Solenoids rarely go bad. All four aren't going to go bad unless the system was struck by lightning. All four diaphragms could be bad though. There could be debris inside the valves but since they're in different locations, I'm not thinking about that yet.

cjosvai

New Member

3

Wednesday, April 3rd 2019, 12:55pm

Thanks for the reply! Below is the image of what valves 1-3 look like. Pretty much the same thing. Is there anything I should be looking for on them? I am on city water and there is no pressure reg in place. Should I take apart the valve and check for debris? I have 4 different boxes all over the yard;each with one zone.

[img]<a href=[/img]" wcf_src="" alt="a>" title="a>" />

mrfixit

Moderator

Posts: 2,343

Location: USA

4

Wednesday, April 3rd 2019, 11:45pm

I think that's a 204 but I wouldn't bet my kids lives on it. I can't read the top of it. Can you take it apart and show a pic of the diaphragm?

If it is a 204, I'd buy some 205's and replace the entire top half of the valve. That way your valve will have all new parts and a flow control. They should work after that. Just be very careful of not pinching that little plastic port while putting the bonnet back on. It's directly below the solenoid. It's on the bottom side of the bonnet.

cjosvai

New Member

5

Friday, April 5th 2019, 5:34pm

So I ended up completely changing out one of the valves. I still have 4 other valves throughout the yard though that are the same as the images below. They are HIT brand out of California. I tried looking on their website for replacement parts but it is not user friendly. Would other diaphragm's and solenoids work with this model?

[img]<a href=[/img]" wcf_src="" alt <img src="<a href=" style="font-size: 1em;" /><img src="http://i65.tinypic.com/qn2qo3.jpg" alt="Image and video hosting by TinyPic" style="font-size: 1em;" />" wcf_src="" alt="a>" title="a>" /> ="a>" title="a>" />

mrfixit

Moderator

Posts: 2,343

Location: USA

6

Friday, April 5th 2019, 9:04pm

Now you've done it. You have a valve I've never seen before. It looks exactly like an old hardy or and Irritrol 204 valve.
I can't see the inside of your valve. I'd need about 4 pics. Top of the diaphragm. Bottom of the diaphragm. Side of the diaphragm. Bottom of the bonnet and the inside bottom half of the valve. That's 5.

But, it looks like a 205 would go on there. Only one way to find out. Orrr This should do it. HIT valve < Click on me.

Or Call HIT They might be out of business. I thought they were anyway. One way to find out.

This post has been edited 1 times, last edit by "mrfixit" (Apr 5th 2019, 9:09pm)


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