Weathermatic 11000, Weathermatic 12000, Weathermatic 21000, 1-1/2"
Valve Repair Size:
Weathermatic 21000, 11000, & 12000
Replacement Valve Diaphragm
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Why did you choose this?
this doesnt look like the diaphram i pulled out?
BEST ANSWER: Is the only difference that your diaphragm has a brass plate on it? If so you just take that brass plate off and put it on the new one.
My diaphragm is 3 1/4" across is this one the right size, it really looks like it?