As every season comes, several necessary tasks and responsibilities need to be done around your yard and house to keep everything in proper order and running smoothly. During winter season, one such task is to blow out the sprinkler system by an air compressor. Spending a little time to winterize the sprinkler system properly could prevent costly repairs and problems.
Which tools do you need?
- Safety glasses for eyes
- Hose adapter or connector
- Air hose
- Air compressor
Air compressor sizing
In most situation, you will need top rated air compressors which offer the suitable cubic feet per minute (CFM) for the device that you are using. You could ask for advice from the representative at any local center for home improvement about regulating or adjusting the air pressure; or you could also consult the manual guide for the suggested rating for psi (pound per square inch) and CFM. In general, 50 psi is often applied for black polyethylene pipe and 80 psi is the common standard for inflexible PVC pipes.
As a basic rule, choosing a pressure controlling valve would prevent extra air pressure, which could lead to damage if you do not keep it in sync with the volume of air.
If you do not have an air compressor, then this device is available in any home centers for home improvement or you could rent it from any local shops for equipment rental. Before renting or buying, make sure to go for a device which has the ability to do the task for the kind and size sprinkler system that you are dealing with.
Using air compressor for the system of sprinkler
Step 1: Turn the supply of water off to the irrigation system.
Step 2: Open the hosepipe bib on the mainline of the sprinkler to allow water to drain and pressure on the pipe to go out.
Step 3: Turn the compressor on and follow the direction of manufacturer for charging or setting the psi of the air compressor.
Step 4: After setting the psi, turn the compressor off and close its valve.
Step 5: Attach the hosepipe of the compressor to the hosepipe bib on the mainline of the sprinkler. This might need using an adapter or connector as the fitting between air compressor hosepipe and the hosepipe bib might not align suitably and would lead to a non-secure seal.
Step 6: Run the air compressor to set the system controller or timer in order that the sprinkler situated at the highest elevation and farthest away from the air compressor would be the first area activated.
Step 7: Turn the isolation valves off.
Step 8: Open the compressor’s valve carefully, allowing the air to come in your system gradually.
Step 9: Control the pressure blowing out to make sure it is under the specified operating standard.
Step 10: After completing, continue with the next zone or sprinkler location.
Step 11: Blow out every sprinkler or zone location until there is no water coming from the heads of sprinkler.
Step 12: Run the compressor for about 2 minutes at every sprinkler zone. Do it a couple of times, if needed.
Step 13: Once water does not emerge from the sprinkler system at all, stop the process of blowing out.
Step 14: After removing all of the water, it is essential to disconnect the device to release any air pressure remaining in the line.
Step 15: Strictly follow the instruction for the particular device that you are using to tackle any additional steps important to complete this process.