|Specializing in used and new surplus vacuum equipment and components.|
is a NEW MKS HPS stainless steel KF-40 2-stage right angle "soft start" high vacuum
Our price: $400
As received us, this valve was sealed in plastic as shown. The bag is a bit ragged from handling, with at least one tear in the plastic, but the valve has never been removed from the bag. Enough room was available to allow the protective flange caps to be removed (within the bag) for inspection of the flange surfaces; they are prisitine.
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.