1967 Ford Mustang heater valve replacement

Hi there,

a friend of mine designed a part for his new heater valve for his 1967 Ford Mustang. But he's not on thingiverse and I asked him to publish that thing, he agreed.

the problem is: his old (orgininal c-code) heater valve was leaking and the problem was the valve sealing of the heater valve, that was broken. It was over the years not centered anymore so it started leaking from the bores intended for the membrane.

So we had a look on the internet for replacement parts, but it was