【RV Vacuum Breaker Check Valve】This check valve is a part of the black tank flushing system and installed between the freshwater inlet and the tank flusher.The check valve can prevent gray water from flowing backwards in the water system pipeline, avoid equipment damage, and effectively protect the cleanliness of pure water. 【Solve Problems】Simply replace the cracked and leaking RV vacuum breaker check valve，If your RV check valve leaks while flushing the black tank, or when the black tank flush line system is clogged/failed and your RV camper trailer floor is wet. The vacuum breaker check valve is an optimal replacement for a cracked or leaking RV check valve.The precise design can make the valve core block all the countercurrent sewage and effectively protect the clean water. 【Easy Installation】571-VAC-CHK-A RV Vacuum Breaker Check Valve is plug-and-play. Remove your old check valve. Confirm the installation direction: clean water should flow in the direction of "FLOW" indicated by the arrow of the valve body, and then connect the check valve to the pipeline. Note: Installation position should be about 6 inches higher than the flusher and ensure vertical installation.Before installation, cut off the water source and empty the residual water in the pipeline. 【Widely applicable】The 571-VAC-CHK-A RV vacuum breaker check valves are compatible with various RV models, campers, travel trailers, and motor homes. Note:Besides referring to the listed RV, the most important thing is to check whether the nominal diameter of the circuit breaker that your pipes are adapted to is 1/2 inch, which is the premise to ensure good adaptability. 【Specifications】The parameters of this RV Vacuum Breaker Check Valve are as follows: Nominal pressure (PN): 8-125 PSI ；The inlet/outlet is designed by NPT Male, and the common diameter (DN) is 1/2 inch.

RV Vacuum Breaker Check Valve,571-VAC-CHK-A Camper RV Black Tank Check Valve,Replace Leaking Vacuum Breaker on Black Tank System,Protect Freshwater From Backflow,Fix Loud Noise & Wet Floor.

PART NUMBER: 571-VAC-CHK-A

【Specifications】

Work Water Pressure Range: 8-125 PSI

Connection Type: 1/2’’ NPT male threads on both the inlet and outlet

The following situations may indicate a need to replace the RV black tank flush anti-siphon valve:

The check valve is old and damaged.

Loud noises are coming from under the RV bathroom sink.

Water leakage or spraying occurs after flushing the black water tank, leading to a wet floor.

【Installation Notes】

1.Remove your old check valve.It is recommended to cut off the water supply and drain the remaining water in the pipes before installation.

2.Confirm the installation direction: clean water should flow in the direction of "FLOW" indicated by the arrow of the valve body, and then connect the check valve to the pipeline.

3.Installed between water inlet connection and tank flusher, requires installation of 6" or more above the highest point of any item connected to the waste tank where the flusher is being installed.

4.Use Teflon tape when reinstalling.

【Helpful Tips】

Use the RV black tank flush check valve on only one fixture at a time.

Ensure the RV black water anti-siphon valve is installed perfectly vertical to prevent bad smells from leaking.

Install the valve 6 inches above the highest point of the fixture connected to your water system where the flusher is installed.

Avoid using the RV black tank valve continuously for more than 12 hours, as this may cause the anti-siphon valve to become stuck or closed.

【Package Includes】

1 ╳ RV Vacuum Breaker Check Valve

1 ╳ Teflon Tape