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Tuesday, October 10th 2017, 7:38am

Author: BackflowInspector

FEBCO 765 Retainer & Check Assembly Breaking

Ok, First I understand your frustration. Second, You may want to pull out those parts before your winterize the system or take them out all together for the winter. Third, They are probably breaking from high pressure or water hammer situation. Fourth, Don't Modify any parts for the backflow preventer as you will void any protections and warranty for the Backflow Preventer. If you are unhappy with the Febco 765, buy a Watts 800M4, Wilkins 720A, or Apollo PVB4A. I personally prefer the Watts 800M...

Wednesday, October 4th 2017, 11:11pm

Author: BackflowInspector

Design, drawings and proposals

I would expect this to be the common practice. A design, measurements, calculations all take time. Time is Money. You don't expect to pay for a sprinkler estimate, so you will usually get a bid with general information. Number of zones, estimated materials, brand names preferred by the contractor are types of information you would expect to get. I would ask how long they have been installing irrigation or how many systems they have installed. But, you can give one of the 3 the job, contingent on...

Thursday, July 27th 2017, 8:44am

Author: BackflowInspector

New system has two zones with low pressure

Its probably a flow problem You may have too much water flowing through the the 2 zones that are giving you the problems with pressure. Think of it like a garden hose with a couple of holes in it, you will have too much water flowing out the holes and not enough at the end of the hose. If you exceed the capacity of your 3/4" line, Probably 8-10 gallons per minute, you will have very poor performance. If that sounds like a reasonable explanation you may either want to split the zones into more zo...

Wednesday, July 12th 2017, 2:58pm

Author: BackflowInspector

sprinklers and hot water in the house

I am just going to open this up a little bit for the forum. Please give us some more information, Is this a new sprinkler system? How long have you been experiencing this? What is your water Source? Is there a backflow preventer installed on the sprinkler system? Where is the water connection that supplies the irrigation system? What city are you located in? This should be a good start.

Friday, June 30th 2017, 10:03pm

Author: BackflowInspector

Rainbird ESP 8SI control won't turn on

I would replace it. Technology has come a long way in a short period of time. There are very affordable WIFI and smart phone enabled timers now. Its a good time to upgrade

Thursday, June 15th 2017, 4:28pm

Author: BackflowInspector

Orbit 3/4" brass valve didn't shut off

Very Cool That is very common. It will be interesting to see what you find.

Thursday, June 15th 2017, 12:05pm

Author: BackflowInspector

Orbit 3/4" brass valve didn't shut off

It is very possible that the original installers had forgot to tighten the valves or a repair guy got sloppy and forgot to tighten the solenoid on the valve. This is very common. You did everything right. If you know where your other valves are it may be a good idea to check their tightness. Firm, but don't over tighten. If you can't locate your valves, don't fix it if it is not broken.

Thursday, June 15th 2017, 11:55am

Author: BackflowInspector

Valve Sizing Max

I don't have the charts of friction loss in front of me, but generally there guidelines most irrigation designers use. When I design, I generally use 1" up to 20 or 22 GPM, 20 to 40 GPM 1.5", 40-Plus 2" valve. The Higher flow and pressure through the valve can cause it to have problems over time, and of course there is pressure loss to think about. You want to use the right valve for the right job.

Sunday, June 11th 2017, 4:41pm

Author: BackflowInspector

water pressure to low? options?

Those are great nozzles. I am so happy to hear somebody else has appreciated them too. They should be called bacon savers as they can save your bacon on repair calls.

Sunday, June 4th 2017, 12:53am

Author: BackflowInspector

System will not come on, at wits end.

I think you guys are describing a Rain Sensor Issue. Either your rain sensor is wet. Your rain sensor if you have one may be wired in after the timer or not into the timer. If the rain sensor wire is cut, (very common)! Your system will be dead. It may not be the problem, but it is the best place to start.

Thursday, June 1st 2017, 6:57pm

Author: BackflowInspector

Poly Pipes blowing at connections

I am not the best guy to answer this question, but I have seen that it was not replied to so here goes. What kind of pressure are you putting on the main line? Are you using compression fittings or glue/Primer? I am a hard pipe guy for mainline. I don't see the benefit of a poly mainline, but I live in Texas. I guess your trenches are still open. How many feet does your mainline run?

Tuesday, May 23rd 2017, 11:03am

Author: BackflowInspector

Orbit 57880 - Unable to run multiple zones concurrently

Wow, The zones are designed to operate with in hydraulic parameters. Its simple math. Your water source could not handle all 4 zones operating at the same time. That is a simple explanation of why they broke the total area covered into 4 zones. If you think about it, If it could have been done in 1 zone (Why would they have done it in 4 zones)? They did it in 4 zones because they had to. Due to the math involved. If your meter allow 15 gallons at a given pressure of 60 PSI, Zone 1 is probably 10...

Saturday, May 20th 2017, 4:11pm

Author: BackflowInspector

System will not turn on

Glad you got it working for now. I have a couple of thoughts on it. One, Sometimes there is a dedicated jumper wire that is in place when you buy a timer. When you install a rain sensor to the timer, you are supposed to discard or disconnect the jumper wire for the sensor to become an active part of the system. If this is the on a dedicated sensor location at the timer and you disconnect the rain sensor, you would need to re connect or reinsert a form of a jumper wire to connect to each of the r...

Saturday, May 20th 2017, 9:55am

Author: BackflowInspector

System will not turn on

I will not cover all the questions as I pop in and out. But if the backflow preventer is in the open position, the water source is open, and you have water at the irrigation zone, valve, station, the most vulnerable part of the electrical system in my humble opinion is the rain sensor connection. Lets think about the function of the rain sensor. Stop the system from coming on. Kill the system. NO water. If the wire gets cut to the rain sensor, the system is dead. I would Check for a rain sensor ...

Thursday, May 11th 2017, 8:16pm

Author: BackflowInspector

Hunter not getting the advertised range

I think you have given enough information to make an educated guess to the situation. You are probably good for 5 to 8 GPM Flow Rate to get you the pressure and volume you need to run the Hunter at advertised flow and distance. You got 5 to 8 gallons and coming off of the hose bib you should probably stay closer to 5 GPM. So If you use an 8 GPM nozzle that is about 8 GPM you are done. Or You could use two heads each with a 4 gallon nozzle that would equal 8 GPM. Or you could use 4 heads with a 2...

Thursday, May 11th 2017, 3:56pm

Author: BackflowInspector

Backflow preventer

Ok The main difference is that the Double Check Valve Assembly is a low hazard assembly. It protects against backpressure and Backsiphonage so elvation is not an issue. It does not have a vent or discharge capability. It is basically two check valves that need to hold tight at above 1 lbs pressure for check 1 and check 2. The RP is a high hazard backflow preventer that is the best protection you can get. It is also a backpressure and backsiphonage protection. It does have a vent, that can discha...

Friday, April 21st 2017, 6:42pm

Author: BackflowInspector

Backflow preventer -- should I hear water running through it all day?

I some times see these connected to a pool fill. Do you have a pool? It could be that it is directly connected to the pool fill. You may have a separate one for the Irrigation.

Friday, April 21st 2017, 6:39pm

Author: BackflowInspector

Back Flow Preventers

Did you experience freeze this winter? If your backflow preventer froze, you can usually repair it with a repair kit. They are available from sprinkler warehouse. They are the online store that sponsors this forum.