Camco RV Brass Metal Blow Out Plug. It is designed to completely clear your water lines. Simply screw the plug into the city water inlet, open all drains and faucets, attach and activate the air pump until all lines are clear. This easy-to-use plug ensures that your RV's water system is free of debris and ready for use.

• Used to completely clear your water lines.
• Screw the plug into the city water inlet, open all drains & faucets, attach & activate air pump until all lines are clear.