Order the pump from granger or similar company. It is indeed a Gast pump. We have 4 large ones here at work. Ordering from a industrial company will save you about 75% of the price! From experience. Once you get one the Gast pump lasts forever. I only replace one of the four and the rest are over 20 years old and work fine. Each one has an obscene number of exposures on them as we a printing company and before the days of computers used them exclusively all day everyday. Doing some 4/c catalog compositing I have many a 6+ hour day one those pumps. NuArc may have the vacuum bed your looking for but from what I see they are not the same company they were 10+ years ago. They dropped most of their product line in the merger/takeover.