• Used to apply air pressure to your water lines to insure that all the water is removed before winterizing
• Shrader type valve and will hold air pressure until removed
• Releases pressure by opening a faucet - do not depress the check valve on your water fill
With less water remaining in the lines, your anti-freeze will work at the dilution you want. Also helps with the removal of anti-freeze when dewinterizing.
03054 Blow Out Plug by JR Products
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