Heater line part identification help

It May just be stuck. Take it loose and play with it some. I don’t think they are reproduced. You can put a manual valve in and open it in the winter and close it in the summer if you want.

You can use any vacuum valve that has the right heater hose size and works the same way. Some open with vacuum applied and some close with vacuum applied.

I bought the wrong one off eBay for $7 I think. it worked the opposite. I swapped vacuum hoses under the dash to make it work, since I am a cheapskate.