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Condition:
  New
Part Number:
  P106938
Warranty:
  Full Manufacturer's Warranty

Available Now:  6   Agilent Varian Thermal Switch for VHS-4, 6, 10, 250, & 400 Diffusion Pumps PN 642906025 228
Expecting:   2
Anticipated Arrival:  1 on 2021-08-23


Sale: $228.00


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Agilent Varian Thermal Switch for VHS-4, 6, 10, 250, & 400 Diffusion Pumps PN 642906025


Agilent Varian Thermal Switch for VHS-4, 6,10, 250, & 400 Diffusion Pumps
PN 642906025

This is the Agilent Varian VHS-4, VHS-6, VHS-10, VHS-250, VHS-400 Diffusion Pump replacement Thermal Switch. (Set at 300 F, 148 C). See No. 15 below in illustration for thermal switch location on a VHS-4



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Specifications
Specification Value
Pumping Speed, Operating Range 2,125 l/s air, 2,660 l/s He/H₂
Maximum Pumping Speed 3,700 l/s air w/standard cold cap; 4600 l/s Helium
Maximum Throughput 2.6 T-l/s (3.5 mbar-l/s) in operating range, 3.5 T-l/s (4.5 mbar-l/s) @ 0.01 Torr
Operating Range 1.2x10⁻³ to < 5x10⁻⁹ Torr (1.6 x 10⁻³ to < 6.5 x 10⁻⁹ mbar)
Maximum Forepressure No Load: 0.65 Torr (0.85 mbar)
Full Load: 0.55 Torr (0.72 mbar)
Recommended Backing Pump ≥ 17 cfm (29 m³/hr)
Backstreaming Rate < 5.0 x 10⁻⁴ mg/cm²/min (with standard cold cap)
Warmup Time 10 minutes
Cooldown Time 10 minutes (with quick cool coil)
Fluid Charge 500 cc - Exact fluid charge available
Electrical Requirements 1 ph, 50/60 Hz, 120/208/240 VAC
Pump Power 2,200 Watts
Cooling Water Requirements 0.25 gpm (50 l/h)
Water Connections ⅛ in. FPT Tee

VHS-400 Diffusion Pump Replacement Parts List

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Description Part No. Item
Standard Cold Cap Assembly F9584301 1
Sight Glass Repair Kit consisting of: L8908301 2
   Sight Glass L8816001 5.1
   Gasket, Teflon L9694001 5.1
   O-ring, Viton, Parker No. 2-113 CommI 5.1
   O-ring, Viton, Parker No. 2-226 CommI 5.1
Jet Assembly w/Splash Baffle F9548301 3
Splash Baffle (Included in the Jet Assembly Kit) 4
Foreline Baffle Assembly L9172301 5
Baffle Retaining Ring 699992187 6
Thermal Switch Includes: L8912301 7
   Switch (set at 300 F 147 C) 642906025 7a
   Lug 648056680 7b
   Wire 656179100
   Box Insulator 89867001 7d
Heaters (one heater required per pump) 8
   120V / 2200 watt Heater Element 647306125 5.1
   208 V / 2220 watt Heater Element 647306175 5.1
   240 V / 2200 watt Heater Element 647306225 5.1
Heater wire, 10 AWG, 36 inches (3 per pump required) X3901-68002 9
   Lug, Nickel 648056680 10
Heater Clamp Assembly, Includes: 86643301 11
  Heater Cover Plate 86088301 11a
  Heater Insulator 86087001 11b
  Heater Clamp Plate 86086301 11c
Heater Insulation Blanket L8998001 12
Heater Cover L8997001 13
O-Ring Kit includes: K0377178 14
   3 inlet flange O-ring, Butyl No. 2-379
   3 foreline flange O-ring, Butyl No. 2-332
   10 Viton fill and drain O-rings (Old style), Viton No. 2-112 5.1
   10 Viton fill and drain O-rings (new style, Parker No. 2-113 5.1
   1 Sight glass O-ring, Parker No. 2-226 5.1
   1 PTFE gasket 5.1
Screw, Socket hd cap, no. 8-32x1/4, stainless steel Screw 15
Viton Centering ring for ISO inlet flange, 250K IC250SV 16
Centering ring for foreline flange (ASA with 5 inches OD) 17
3/8 Hose 1/8 Pipe Barbed (included with the pump) 18
Ceramic Bushing (included with the pump) 699006025 19
Screw, Rd hd machine, no. 6-32x3/16, stainless steel Screw 5.1
Stud, no. 8-32 x 1/2, stainless steel Stud 5.1
NEOVAC SY diffusion pump fluid, 1000 cc K6948301 5.1
DC-704 diffusion pump fluid, 500 cc (2 required) 695474005
DC-705 diffusion pump fluid, 500 cc (2 required) 695475005
Santovac 5 diffusion pump fluid, 500 cc 695405005
Installation and Operation Manual 699901021
PDF Logo Agilent Varian VHS-10, VHS-400 High Vacuum Diffusion Pump Manual.pdf

PDF Logo Agilent Diffusion Pumps Catalog.pdf



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CONTACT US
Ideal Vacuum Products, LLC
5910 Midway Park Blvd NE,
Albuquerque, NM 87109-5805

Phone: (505) 872-0037
Fax: (505) 872-9001
info@idealvac.com



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