psi for blowing out water lines

Where to start blowing out water lines? This will blow water back up the line from the washer feed to an open tap elsewhere in the water system.Open all the cold water taps downstream from there, and as air flows from the compressor through the lines, that should drive all the cold water out.Next, attach the compressor feed to the washing machine hot water supply hose. Gas-powered compressors, however, do not rely on extension cords to power the motor, making them great choices for use on wet sprinkler systems. Many consider this to be the easiest method, but you’ll need an air compressor as well as a “blow-out plug.” You can buy a blow-out plug at an RV supply store. At the very least, open all of the faucets and the shower to drain away as much water as possible.You will need to use at least 2gallons or more of RV antifreeze to full all of your water lines.There are a couple of ways to pump the special RV antifreeze through your water lines; you can use a hand pump, or you can use the water pump installed in your RV. When blowing out water lines for winter, the system will/should have at least one fixture open. If too much water remains in your sprinkler lines, then that water will freeze, and the resulting expansion can break the plastic lines laid below the ground. Close that faucet and move to the next. That makes using an electric compressor potentially dangerous due to the risk of electric shock. Stay up to date with camper accessories and great reviews. Before the temperatures drop below freezing, you’ll need to get your RV ready for the cold winter months ahead. However, if you use this method you can’t be absolutely sure that every drop of water is out of the lines. Note: Turn the regulator on the compressor down to 10 PSI or so before connecting the air line to the house water lines. However, if you use the water pump, you must put in a pump bypass kit; this is because the water pump draws water from the fresh water tank and you must not get any antifreeze in the freshwater tank.Pump the antifreeze throughout the water lines until they are filled.As you can see, the major difference is in the amount of antifreeze you will use. To do that, you will need what’s shown in the image right below.Since the hose from the washing machine typically connects via a male pipe thread on the water line, I visited a decent hardware store that offered the adapter you see on the right. But, that one is designed to connect to the female thread on a sprinkler system.As noted below, the easiest way to connect air to a house system is at the hot and cold water connections for the washer and dryer. It’s closer to blowing out the dust in your computer keyboard. I felt that the string of responses would be of interest to anyone considering clearing water out of their water pipes before winter freeze-up.That visitor, Phillip, wrote: “I am planning to buy a compressor to blow out water pipes for winter.

However, if you use this method you can’t be absolutely sure that every drop of water is out of the lines.You should still blow-out the water lines with your air compressor first. Preferable the open tap is at a lower level than the air inlet, but if that’s not possible, you can still achieve a fairly water-free pipe.If the water pipe is metal you could use compressed air at industrial pressures. What size compressor would I need?Yes, it’s getting to be the time of the year in the Northern Hemisphere where we have to be concerned about water freezing in pipes that are exposed to the frigid wintertime conditions.If water has pooled in the water lines and the temperature drops below freezing, that water will freeze. Therefore, a small .5 or .75 HP air compressor should do that job OK.If there’s convoluted piping, add higher pressure and get the flow of compressed air going into the pipe as fast as you can to build the volume of air inside the pipe quickly, to drive the water out before it. Start bleeding the waterlines off at the closest fixture and go to the next as it is blowing air.