Brass RV Vacuum Breaker Check Valve For Gray Water Black Tank Flush System Replacement For Leaking Vacuum Breaker In Camper Trailer Water Line 571 VAC CHK A Compatible Improves Freshwater Quality

Single-Unit Brass RV Vacuum Breaker for Fresh Water RVs
✔️ Brass construction; 8-125 PSI rating; easy install

This brass vacuum breaker check valve is designed for use in black water tank flush systems on RVs and campers. It sits between the fresh water inlet and the tank flusher to prevent backflow and keep freshwater clean. Compatible with B&B 571 valves, it’s a reliable replacement for leaking units in campers, travel trailers, and motorhomes.

✅ Brass valve body resists corrosion and freezing better than plastic for longer life
✅ Rated for 8-125 PSI to cover typical RV plumbing conditions
✅ Installs 6 inches above the highest drain connection for proper function
✅ Works with all caravan and camper models to prevent siphon backflow
✅ Replaces leaking check valves, restoring reliable water flow

💡 What is a handy reason to use a vacuum breaker check valve in an RV water system?

It blocks backflow from the waste line into the fresh water line, protecting potable water.

- backflow protection for RV water systems, preventing siphoning into the freshwater line
- safeguards black water flush setups and travel trailers from cross contamination
- quick, easy replacement for a leaking valve to restore reliable water flow