Hi all,
I recently had the air admittance/check valve fail on my black tank flush system. The seals inside failed and leaked water whenever the flush was used.
After pricing a replacement, I was shocked at how much that lousy plastic part cost ($46 on Amazon), so I decided to use brass parts which are both cheaper and more durable.
Anti-siphon vaccuum breaker:
https://www.amazon.com/gp/product/B000MNLNF6/
Check Valve:
https://www.amazon.com/gp/product/B00HJ6P0Z8/
I also purchased some adapters from the local hardware and opted to replace the existing PEX screw fittings with brass.
The new setup works great.
Linear Mode
