Agilent Varian NHS-35 Upper Thermal Switch, Diffusion Vacuum Pump Replacement Parts
Agilent Varian Part Number PN K9050005
This is a replacement upper thermal (water) switch. Fits the Agilent Varian NHS-35 Diffusion Pump.
Set at 200º F, 93º C.
For location of the upper thermal switch see figure #8 (diagram exploded view & parts illustration) below.
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ITEM
DESCRIPTION
PART NO.
1
Standard Cold Cap Assembly
81437301
Water-cooled Halo Baffle
K1857335
2
2B
Cold Cap Connectors
Cold Cap Kit with Gasket
L88839301
Cold Cap Gasket/Grommet (Kit of 4)
L8839301
Cold Cap Nut & Follower (Brass)
L8840301
Cold Cap Female Coupling
622445026
3
Jet Assembly
F1971302
4
1 Butyl O-ring for ASA inlet flange
78536001
5
Foreline Baffle Assembly
F1744301
6
Centering ring for ISO foreline flange, 200K
IC200SV
7
Sight Glass Service Kit for Pumps Built Before Oct. 1995:
3 Glass Tubes
F1755008
2 Brass Union 1/4 OD x 1/4 MPT
622568108
2 Brass Elbow 69FL 6x4, 169VL6-4
623451012
8 O-ring, Viton, Parker No. 2-011
660892011
8 O-ring, Viton, Parker No. 2-111
660892111
3 O-ring, Viton, Parker No. 2-221
660892221
3 O-ring, Viton, Parker No. 2-213
660892213
F6097301
7
Sight Glass Service Kit for Pumps Built After 1995
L9223001
8
Threaded Plugs, fill and drain
77261001
Hose Barb 1/2in Hose to 3/8in Pipe
624301111
9
Upper (water) Thermal Switch (Set at 200°F/93°C)
K9050005
9
Lower (boiler) Thermal Switch (Set at 600°F/316°C)
K9050006
10
Heater wire, 10 AWG, 196 inches (2 per heater required)
X3900-68003
10b
Heater Wiring Connection Box
11
Heaters (six heaters required per pump, same voltage)
240V/415V/480V, 4000 watt Heater Element w/ leads
647335010
200V, 4000 watt Heater Element
647335020
400V, 4000 watt Heater Element w/ leads
L6383010
440V, 4000 watt Heater Element w/ leads
L6383011
Heater Retrofit for pumps built bef. May 1990
240V/480V, 4000 watt Heater Element no leads
647235248
Kits (clamping plates not included)
240V NHS-35 Diffusion Pump
L6391308
480V NHS-35 Diffusion Pump
L6391309
380/415V NHS-35 Diffusion Pump
L6391326
12
Heater Clampling Plate (Six required per pump)
F1749001
13
Heater Insulator (One required per pump)
L9699001
14
Cover Plate
Heat Shield (Reusable)
L6370001
O-Ring Kit for ASA Pumps includes:
1 Butyl O-ring for ASA inlet flange
78536001
1 Butly O-ring foreline flange (2-267)
660893267
8 Viton O-rings fill and drain (2-213)
660892213
4 Viton O-rings fill and drain (2-221)
660892221
1 Sight glass O-ring (2-240)
660892240
1 Graphite sight glass gasket
L9228001
K0377169
DC-702 diffusion pump fluid, one-gallon
695472008
DC-704 diffusion pump fluid, one-gallon
695474008
DC-705 diffusion pump fluid, one-gallon
695475008
Installation and Operation Manual-download from www.agilent.com/chem/vacuum