What is this? ( a plumbing question )
Found this under our bathroom sink. Any idea what it is, I don't recognize this device, some kind if a vent ? I see an arrow designating flow direction.
Thanks for any input.
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Found this under our bathroom sink. Any idea what it is, I don't recognize this device, some kind if a vent ? I see an arrow designating flow direction.
Thanks for any input.
- Vacuum break
- yes, vacuum breaker/anti back flow device....do you have a black tank flush system?
- Could be a combination vacuum break and check valve. Have one of those under my bathroom sink for the black tank flusher line.
- YEP........
That is an anti siphon-vacuum breaker device on the black tank flush system
Required to prevent cross-contamination
- Thanks everyone. Mystery solved.
- And keep an eye on it. They have a tendency to start leaking.
- Mine just started leaking as I was flushing out after a Florida trip. I made a note to check it this spring. One of the connections was loose enough that I could turn it with my hand.
- It is a cheap plastic vacuum break valve just waiting for a time to flood your trailer while cleaning your black water tank. Many horror stories surrounding these valves. They make brass ones. Chris
- Make sure it is secured to the wall or the cabinet so that it does not flop around while you are underway. Can lead to leaks.
- There are 2 kinds of plastic valves...those that leak and those that will leak...as mentioned, securing it seems to increase longevity...
