Use this blow-out plug to remove water from your RV's water lines before putting your RV in storage for the winter. Screw plug into your RV's city water inlet and inject air through the threaded valve to blow out any water in your plumbing.
Features:

• Blow-out plug helps clear out water from your RV's water lines before adding antifreeze
• Simple operation
  • Thread into your RV's city water inlet
  • Open all drains and faucets in your RV
  • Blow air through your RV's pipes using an air compressor (sold separately)
• Multiple notches in knob let you grip plug easily
• Durable plastic construction
• Screw-on plastic valve cap included
• Gray color