|Specializing in used and new surplus vacuum equipment and components.|
is a NEW MKS HPS stainless steel KF-40 two-stage in-line high vacuum
Our price: $400
As received by us, this valve was sealed in plastic as shown.
This is a two-stage valve, essentially two valves in parallel in one compact package. The low-conductance bypass can be used to carry out a "soft" initial chamber pumpdown with reduced turbulent flow, and the main valve can then be opened for full conductance once an appropriate pressure has been obtained. This functionality is particularly desirable for processes that are sensitive to particulates.
We also have available two-stage valves that are similar in function to this one, but are of a right angle (rather than in-line) configuration. If such valves might be of interest to you, and you don't find them listed, then please contact us.