Triode Pumps

Triode Pumps use reverse electrical polarity and a radically different cathode design to achieve two important advantages over the diode pumps: (1) an electrically isolated cathode allows the starting glow discharge to be confined at significantly higher pressures, resulting in shorter starting times; (2) the sputter cathode design allows noble and non-noble gases sputtering. Triodes have the highest speeds for noble gases and freedom from argon instability in the event of an air leak. Disadvantage: because of the sputter cathode design, the triode pumps require more frequent service.

Model No. Rated
Pump Speed
(l/sec)
Flange 1
I.D./O.D.
(inches)
Wt.
(lbs)
Replacement
Elements
TP-020
20
1.5/2.75
27
Fact. repl.
TP-030
30
2.84/4.50
34
Fact. repl.
TP-060
60 2
4.26/6.0
56
2 ea. TE-060
TP-110
110 2
6.0/8.0
164
1 ea. TE-110
TP-220
220 2
6.0/8.0
249
1 ea. TE-110
TP-400
400 2
6.0/8.0
398
4 ea. TE-110
TP-800
800 2
10.75/12.75
Wire seal flange
927
8 ea. TE-110
1 All flanges ConFlat compatible
2 Double-ended pumps available on special order