I have the profile modeled as I am making new caps for these valves and could have an adapter made up, but it would probably cost more than it is worth. Our pump just has a piece of hose, I believe it is just a short piece of PVC hose attached to it, probably less than $2.00 at a hardware store, that friction fits into the valve body for filling. I would probably go that route myself, way cheaper, more durable, and just as effective. I would be happy to get the ID/OD of the hose I am talking about it you want. If you need any replacement caps, or would like a custom fill adapter, let me know!