Back-Flow-Valve Service, Sprinkler Repair
Oklahoma Drainage and Sprinkler Repair Provides Service for Back-Flow-Valves and all types of Lawn Sprinkler Repair and Service. We have provided Expert Service for all of Central and Western Oklahoma Since 1993.
Back-Flow-Valves
There are two types of Back-Flow-Valves.
Above Ground
Below Ground Back-Flow-Valve.
What is a Back-Flow-Valve?
A Back-Flow-Valve is a part of a Lawn Sprinkler System. Water passes through it from the water source which can be a Water Meter or a Well Pump. It forces water to travel in only one direction from the source to the sprinkler system. It can’t travel backward back to the water source which again is a water meter or well pump.
A Back-Flow-Valve provides protection to the water source from back pressure and chemical contamination from lawn fertilizer.
Most Cities require a Back-Flow-Valve as “Code” for Sprinkler Installation.
Emergency Shut off
Back-Flow-Valves usually have an Emergency Shutoff valve on them that can shut off the water to the lawn sprinkler system but keep the water turned on to the home. Most Back-Flow-Valves have two Emergency Shut off Handles. Either one will work. Many times, they are hard to turn, however.
If there is a leak or water is shooting up in the air just turn the valve handle and give us a call.

Blue Emergency Shutoff handles for a Back-Flow-Valve.
Norman Sprinkler Checkup is a Central Focus for Oklahoma Drainage. We Performed or first Sprinkler Repair in Norman in 1993. It was in Brookhaven on the West side of Norman.
Recently we had a customer in Oklahoma City who wanted to move his Sprinkler Valves. They were in a bad place in his flower bed. He wanted to plant a tree where the valves were located.
We moved 4 Sprinkler Valves about feet out into the yard. All the Sprinkler Pipes had to be redesigned and installed matching the new location and maintaining full functionality.
What Is a Sprinkler Valve?
Think of a Sprinkler Valve as an “Off or on” Switch. The Sprinkler Controller turns the valves on or off.
It Sends a signal through a wire which is underground to the sprinkler valve somewhere in your yard.
Once turned on, the valve lets water pass through a sprinkler pipe to a specific group of sprinkler heads called a Sprinkler Zone. The controller allows water to reach the sprinkler heads for a certain amount of time running through the sprinkler valve. Once the time is up, it shuts off the sprinkler valve and moves on to the next valve in sequence.
Think of it as walking into every room in your house one at a time. As you enter you turn on the light. As you leave you turn off the light and move to the next room. You are the controller. The light switch represents the sprinkler valve.

Rainbird Sprinkler Valve
The Sprinkler Valve in the picture above was taken out of the ground after the pipe froze and broke on the right side. You can see the crack in the PVC pipe. Of course, I had to clean all the mud off the valve before I took the picture.
What causes a Sprinkler Valve to stop working?
Like anything else, a sprinkler valve can wear out. Sprinkler valves fail in closed position. It won’t run continuously if it breaks.
Sprinkler Valves get stuck while running sometimes. The water supply must be then turned off to stop the Sprinkler from running.
Sprinkler Valves can freeze and break in the winter if the sprinkler system has not been properly drained for winter’s cold.
(winterized)
Tree roots can twist or break sprinkler pipes running into sprinkler valves. Magnolia Trees are really bad about this. Oak trees can cause damage too.
Driving something heavy across your yard can crush sprinkler valves. Usually riding lawnmowers don’t cause damage but any truck or car will if you drive over a valve.
Sprinkler Repair Service Provided by Oklahoma Drainage and Sprinkler Repair
Since 1993 we have Replaced Sprinkler Valves that were sticking or were wore out.
Thousands of Sprinkler Heads have been adjusted.

Rotor Sprinkler Head
Countless Sprinkler Controllers have been Reprogramed or Replaced.
We also have fixed a broken Sprinkler Pipe or Two. Seems like a million. Ok, not that many.
I wonder how many? A lot!!!!
Oklahoma Drainage and Sprinkler Repair provides Service for all of Central Oklahoma Including: Oklahoma City, Norman, Edmond, Moore, Yukon and Mustang.
Sometimes things go wrong with sprinkler systems.
GIVE US A CALL.
OKLAHOMA DRAINAGE AND SPRINKLER REPAIR. 405 203 9419
One Common problem is that they continue to run and won’t shut off. In most cases this is a problem with a sprinkler valve that has “Stuck” in the on position.
This can be temporarily solved by shutting of the Emergency Shutoff Valve. The problem is that some sprinkler systems don’t have one to turn off or if they do the homeowner doesn’t know where it is.
It may be on the back-flow valve which may be located on the side of the house under a big plastic fake rock.
Many sprinkler systems in Oklahoma have them. (50 % ?) Under the plastic rock is a back-flow valve with two shut off handles. Usually, they have blue or green or tan handles. Turn one of the handles and it should shut off the water to your sprinkler system.
Other times the Emergency Shutoff Valve is in a box in the ground out by the curb near your water meter. The valve box will have a green lid. Sometimes they are difficult to open. Many times, I had to pry them open with a flat head screwdriver.





















































