Plunger Valve

I am installing a Singer sewing machine base as a vanity/pedestal sink. The machine base has a big peddle on it that I am going to hook the peddle up to a rod and this will control the water to turn on and off. I will set the hot/cold mixture and the rod will just turn on one water line that has warm water for the sink. Basically the faucet will not have handles and everything will turn on with the peddle. So to do this, I am looking for a plunger valve that I can hook up a rod and pull it up and down to turn the water line on and off. It is a ½" water line. Does anyone know where I can find such a thing or which parts I can buy to build this. It needs to be made to connect to copper or PEX. I would like to avoid cheap plastic junk as this will be installed in a crawl space and needs to last.

Here is link to sewing machine base: https://i.pinimg.com/736x/24/d0/19/2...g-machines.jpg

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