psi for blowing out water lines


It’s closer to blowing out the dust in your computer keyboard. Open all the hot water taps elsewhere in the structure, and start adding air. No matter how much pressure you 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. There are various ways to ensure you have no water in your lines. This process isn’t like filling a tire to 100 psi. 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.

Start bleeding the waterlines off at the closest fixture and go to the next as it is blowing air. With this fitting threaded into the adapter on the left, I convert the male thread on the air line to a female thread which allows me to connect the air line to my house water system.I want to blow out both the cold and hot water lines, so again, this equipment allows me to connect to either where the washing machine lines connect to the house.To blow out the lines in a home a good place to attach the air feed from the compressor is the cold water hose bib for the washing machine. Stay up to date with camper accessories and great reviews. However, filling the lines with more antifreeze will better ensure your water lines will be safe over the winter.Owned and operated by campers. When blowing out water lines for winter, the system will/should have at least one fixture open. By opening these drains, most of the water in the system will drain out by gravity.

That makes using an electric compressor potentially dangerous due to the risk of electric shock.


This causes all kinds of fun for those that repair these things. > air compressor psi for blowing out lines This Topic Is Closed ... Due to the number of postings here every spring by owners that blew out the lines and now have broken pipes I'll stick with antifreeze!

To blow out the lines in a home a good place to attach the air feed from the compressor is the cold water hose bib for the washing machine. When using an air compressor to winterize, you don’t need to blow out the water with force. 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. Best to start with 15 PSI of air or so, and see if that drives the water out.
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. If not, raise the pressure a bit and try again.If my math is correct (and yes, you do want to check it) a 3/4″ pipe x 50′ will hold about .2 cubic feet of air. That may require a 1.5 – 3 HP powered compressor with a larger tank.There’s an image above that shows a connector available commercially to attach an air line to a water system. 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. Every winter before it freezes, it’s important to winterize any trailer that has running water capabilities.

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