U.S. Solid RV winterize blowout adapter is made of brass with frosted parts of the highest quality. It greatly increases the life of the product. They are applied to winterize garden hose, sprinkler systems, faucets (such as RV, camper, boat, travel trailer and so on that the vehicle with a water supply system) by blowing out water from the water lines/plumbing to prevent freezing of garden water pipes, sprinkler systems,and faucets.
This fitting can be applied in any water system. You just need to connect the air compressor and garden faucet to winterize lawn sprinkler systems, faucets, or plumbing to prevent damage due to freezing. Turn on the air compressor and rotate around the ball stem to open or close.