Shutting Off Your Back Flow Valve
What to do in the event of freezing temperature? What do you need to protect?
What to do in the event of freezing temperature? What do you need to protect?
Residents have been experiencing bursting back flow preventers on the irrigation system. In the event of a leak, contact a plumber to have a new back flow preventer installed. If you are unable to shut the water down, contact customer service to have CSW shut the water down.
To protect the back flow preventer, covers are available at Customer Service. These are used to insulate the backflow in the event of a freeze. The cost is $63.90.
Additionally, you will want to shut the system down and drain the back flow. To do this, shut the valve off on the supply side of the back flow, this would be the bottom of the back flow.
 
Step 1. Turn this valve a quater turn clockwise.
It will look like the picture on the right.
Once this is done, turn on an irrigation zone and run the zone until no more water comes out of the heads. Turn the zone back off.
Now that you have drained the system down, you can open the drain cock just above the valve that was shut down to drain the remaining water out of the backflow. Leave open until freezing temperatures have subsided.
Step 2. Using a flat head screwdriver turn this valve a quater turn counter-clockwise and leave open until cold weather subsides.
Insulate the back flow with a blanket or other insulating materials.
To pressurize the system once freezing temperatures have subsided, open an irrigation zone on the controller. Once the zone is on, close the drain cock above the main valve and open the main valve. Allow all of the air to be purged from the system and make sure the irrigation heads are operating appropriately. Once the system if free of air, turn the irrigation zone back off.
If you have questions, please feel free to ask at Customer Service.
|
