’71 Power Brake Booster Check Valve?

Please, help me finding a brake booster power check valve for my Demon

My current booster check valve has been rubber coated by a previous owner, probably to plug an air leak. It works, but it's ugly.
View attachment 1715906914
I would like to replace it, but not sure about the one to order.

I found this valve in the Rockauto catalog, but it has three hose nozzles and mine has only two....

'71 Power Brake Booster Check Valve?
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