16-June-2014 This ejector sure is a small package. And we're not sure we have all the dimensions correct. After silver soldering the pieces together, we test it on air and it only pulls 5 inches of vacuum. This is a big disappoinment, the other unit pulled 12 inches. But we worked so hard on this one we decide to install it anyway and have to wait until the next run day to test it under steam. Come next run day we put the vacuum gauge on it and put steam through it -- 21 inches of vacuum!! Success!