What the heck IS this? (odd plumbing shutoff valve?)

[mdnagel]

I'm needing to remove a dishwasher, and this thing is staring me in the face! I twisted it (cause that's how most valves seem to work), but, out of fear* of breaking something, didn't attempt to PULL it.

* OK, I'm always afraid of breaking things, but I'm not residing in the home (yet), and I'm currently not positioned to do plumbing repairs.

Is this a Pull/Push valve of some sorts?

This MH stuff is a whole 'nother world to me!

[Rhonda]

That is EXACTLY what it is.

[mdnagel]

I pull it up to shut it off, or do I push it down?

The dishwasher wasn't in use, so I don't know what it's on/off state is. I suppose that I could have gotten a clue from the ones in the bathrooms (easier to check water from faucets/toilets rather than trying to run the dishwasher [which I don't know if it works properly or not]).

Will give it more of the "college try" tonight

[JD]

I haven't seen a valve like that before. It looks like some sort of valve/supply line combo push fitting. Some push fittings will have a metal or plastic ring that sticks out an 1/8" from the fitting. Depressing that will pull the thing loose. They sell a small plastic tool for this but pliers will work. I guess some push fittings might need a removal tool to release the fitting. If that is a one piece valve/supply line, replacing it would mean pulling the dishwasher to install a new supply line. But that is what I would do. Replace all of that with pex. JMO

[mdnagel]

Well, I braved potential disaster and yanked the top up, and lo and behold it popped up and the water is off! Pretty tough pull, but yeah, that did it!