Bill, I was told they are actually discontinued units obtained at a price they could rebuild and pass on an initial savings to the customer-note I said initial.. I realize they may or may not last as long as new, depending on what is required but they do fill a need.
I chose a new pump and it was twice the cost.
In my case it's a Thomas and I got to look at the rebuilt unit and the heads are different. I've since found that style pump and learned it was discontinued quite some time ago and there are no rebuild kits available for that pump but there is a replacement that isn't double the cost of the older unit so these are still in no way, obsolete.
I think these were units they gave an allowance on for updated units-as to the question of where they came from.
I found this old style pump is exactly the same housing used in our Medbed applications on our Air Ambulance aircraft. I looked at mine and it's identical but these are still available but about 6500 a pop. (typical in aviation).
Last edited by Snipe; 10/31/19 08:07 PM.
