Vacuum Gate
When would I use aluminum components (gate valves etc..) in a vacuum chamber over stainless or vice versa?
I’ve just started searching for an 8″ conflat gate valve for a vacuum deposition chamber (PVD sputtering with Ar process gas). I’ve realised that there are now Aluminum gate valves as well as Stainless valves that I’m used to. Can someone tell me which applications require which valve or what the consierations for use of either would be.
Many Thanks,
Steve
Since it is a vacuum process I would give the highest consideration to a tight shutoff valve. Butterfly, and gate valves in particular, are prone to leakage but, given the size you may not have another choice.
If you just want shutoff, I would use a ball valve, but 8″ is a little bit large, and heavy. Since it is a vacuum process, no large flows are involved and a much smaller should do.
Membrane or diaphragm valves have a very good shutoff, too.
As far as aluminum or steel, given the pressures and if non corrosive chemicals are involved, aluminum should be more than adequate.
.
If you´d also like to control the flow, a v-notch ball valve would be advised. In that case you´d not need a full bore 8″ valve, but a much smaller one.
.
GNB Vacuum Gate Valve Service Video
|
|
Gates #4L470 MM 47×1/2 FHP V Belt $3.25 47″ x 1/2″ FHP V Belt, Gates NO. 2470…. |
|
|
Gates #4L540 MM 54×1/2 FHP V Belt $3.41 54″ x 1/2″ FHP V Belt, Gates NO. 2540…. |
|
|
Gates #5L630 MM 63×5/8 FHP V Belt $10.10 63″ x 5/8″ FHP V Belt Gates NO. 3630…. |
|
|
Jet JW1007 4-Inch Blastgate $3.99 The Jet 4-Inch Blastgate improves your dust collection system. Blast gates are used to control airflow from one machine to another, maximizing system efficiency. These 4-inch OD ABS plastic blast gates have a textured surface and an easy sliding-gate action, and feature a two-degree tapered fit for easy hookup. This Blastgate can be used with metal or plastic ductwork…. |
|
|
Woodstock W1007 4-Inch Blast Gate for Use with Vacuum/Dust Collectors $3.95 We are the largest supplier of Blast Gates in the U.S.A.! Made with Anti-Static Additive!… |
|
|
Woodstock W1142 4-Inch Aluminum Blastgate $9.48 We are the largest supplier of Blast Gates in the U.S.A.! Two types available:… |
|
|
Bakugan Battle Brawlers LOOSE Metal Gate Card – Vacuum $0.01 … |
|
|
Gates – Vacuum Hose, 5/32 x 50 (27042) $14.25 Gates Vacuum Hose, 5/32″ x 50… |
|
|
Gates – Vacuum Hose, 7/64 x 50 (27041) $9.99 Gates Vacuum Hose, 7/64″ x 50… |
|
|
Gates – Vacuum Hose, 7/32 x 50 (27043) $15.99 Gates Vacuum Hose, 7/32″ x 50… |
