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OEM 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
- Remove your old check valve.It is recommended to cut off the water supply and drain the remaining water in the pipes before installation.
- 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.
- 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.
- 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
Mike
2025-05-21 11:18:15
Came quick
Cincy
2025-03-26 12:53:19
Does not work. Very poorly made.
Amanda and Dave
2024-12-29 12:40:44
If you have these style check valves in your RV, chances are you will need to replace one eventually. One of mine started leaking so I looked for a middle of the road priced replacement and found this one. It installed easily and so far functions as the old one did. The quality seems a bit lower than the original but it seems decent. So far it is a good replacement. I will update if anything changes but as of now I give it 5 stars.
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