Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.
Winterization...Air comes out backflow
I am winterizing my sytem myself for the first time. When I hook my compressor to the spigot after the backflow device, the air comes out the backflow device (bell top) instead of pressurizing the main line to the sprinkler heads. How do I stop the air from coming out the backflow device?
Thanks!
is it a PVB....? Once the water is clear from the backflow and the line, you can shut off the valve after the PVB (on the backflow) so that air wont go past it..
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers
Help PLEASE!?
I am having the same problem as john4man. I have a hunter controler, with hunter SRVs and Watts PVB 800M4 FR. I closed the main in the basement, open the faucet outside (mounted below the PVB). Open both screws, before and after teh PVG. Once all is drained, I then hook up the compressor to the testcock on the inlet side of the PVB, close the testcock passed the PVB (passed mean water comes from the house, goes thru PVB and then there is the testcock I am talking about). Turn the controler on. Turn the compressor on. And yes, air comes out of the PVB. I have tried all combinations and the PVB does not seem to be closing... Do I need to remove the stem inside the PVB? Do I need to manually open the SRV?
Thanks for the time!!
How many PSI are you running on your compressor when blowing out?
Xpedient Irrigation Inc. is a locally owned company that delivers solutions to all your sprinker system needs.
We service both residential and light commercial customers.
We offer: Complete installations
All types of Repairs
Summer start-ups
Evaluation of coverage
Troubleshooting
Pressure loss
Vacuum breaker repair
Drip/Low-Pressure Irrigation Installation and Repair
and Much More!
If you would like free consultation or advice for your property, please feel free to contact us with any questions!
Call or email us now to schedule your summer-start up!
http://www.highlandsranch.com/class/display.html?id=3537
I am having the exact same problem with an AVB valve. All the air comes back through the AVB? I have a small air compressor but it has worked in all the past houses I have lived in. Do you need more pressure than I can supply?