Agilent Varian VHS-10 and VHS-400 Oil Drain Plug, Diffusion Vacuum Pump Replacement Parts. Agilent Varian Part Number: L9173001. This is a replacement Oil Drain Plug. Fits the Agilent Varian VHS-10 and VHS-400 Diffusion Pump. For location of the oil drain plug see figure #7 (diagram exploded view & parts illustration) below.

Agilent Varian VHS-250 Diffusion Pump O-Ring Kit.Agient Varian PN K0377184 This is the Agilent Varian VHS-250 Diffusion Pump O-Ring Kit. O-Ring Kit Contains: 3 Butyl inlet flange O-ring, Parker No. 2-267 3-Butyl-N foreline flange O-ring, Parker No. 2-332 10 Viton fill and drain O-rings (old style), Parker No. 2-112 10 Viton fill and drain O-rings (new style, Parker No. 2-113 1 PTFE gasket 1 Sight glass O-ring, Parker No. 2-226

Agilent Varian VHS-250 Diffusion Pump Lugs for Heater Wire, 1 each.Varian Agilnet PN 648056680 This is the Agilent Varian VHS-250 diffusion pump heater wire lugs, (sold as one each.) See No. 10 below in illustration for heater wire lugs location.

Agilent Varian VHS-6 Extended Cold Cap, Mexican Hat, Diffusion Vacuum Pump Replacement PartsAgilent Varian These Agilent Varian VHS-6 extended cold caps are OEM Agilent Varian replacement parts for the VHS-6 diffusion vacuum pumps. The extended cold cap is sometimes referred to as a "Mexican Hat" due to its shape. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For removal installation procedures of cold cap see page 37 of instruction manual PDF below. These extended cold caps are OEM original Agilent Varian replacement , see item #2 and #18 on (diagram exploded view & parts illustration) below.

Agilent Varian NHS-35, Diffusion Pump ASA 35 in. Inlet Diffusion Pump O-Ring.Agient Varian PN 78536001 This is the Agilent Varian NHS-35 Diffusion Pump, Inlet O-Ring for ASA 35 in. ASA Nominal value.

Agilent Varian VHS-6, Diffusion Pump Baffle Retaining Ring.Agilent Varian This is a replacement baffle retaining ring. Fits the Agilent Varian VHS-6 Diffusion Pump. For location of the baffle retaining ring see item #15 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Block.Agilent Varian This is a replacement part heater block (1 per diffusion pump). Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item #3 for heater block location below.

Agilent Varian VHS-6 Diffusion Pump Lugs for Heater Wire, Sold As 1 each.Agilent Varian These Agilent Varian VHS-6 diffusion pump heater wire lugs are OEM Agilent Varian replacement parts. These designed to withstand the high temperatures of the diffusion pumps heater zone and are sold individually, see #10 below in illustration for heater wire lugs location.

Agilent Varian HS-20 Heater Nickle Wire 10 AWG, 120 inches long, Diffusion Vacuum Pump Replacement PartsAgilent Varian Part Number PN X3900-68006 This is a replacement heater nickle wire, 10 AWG, 120 inches long. Fits the Agilent Varian HS-20 Diffusion Pump. For location of the heater wire see figure #10 (diagram exploded view & parts illustration) below. (2 per heater required)

Agilent Varian VHS-400 Diffusion Pump Heater Insulator, Replacement Part, For New Style Diffusion Pumps Agilent Varian Part Number L8914001 These Agilent Varian VHS-400 diffusion pump heater insulator covers are used to insulate the heater from pumps bottom cover. These heater insulators are used in the new-style diffusion pumps. These are OEM Agilent Varian replacement parts with part number L8903301, see item #13 below in illustration for heater insulator location.

Agilent Varian VHS-400 Diffusion Pump Heater Wire, 10 AWG, Sold by the footThis is the Agilent Varian VHS-400 Diffusion Pump stranded nickel heater wire, 10 AWG, Sold by the foot. (3 - 42 inch lengths required for total replacement per pump). See No. 8 below in illustration for heater wire location.

Agilent Varian NHS-35 Diffusion Pump, Heat Shield.This is the Agilent Varian NHS-35 Diffusion Pump Heat Shield.

Agilent Varian HS-32 Diffusion Pump, Replacement Clamping Plate(6 required per pump) This is a replacement clamping plate. (1 each) Fits the Agilent Varian HS-32 Diffusion Pump. 6 required per pump. For location of the clamping plate see item #14 (diagram exploded view & parts illustration) below.

Hex Bolt for attaching ASA Gate Valve to HS-2 Diffusion Pumps. (1each)This is a bolt that attaches and ASA Gate Valve to the HS-2 Varian Diffusion Pump. Size 3/8-16 1" Length, Course Thread, SS (1 each).

Agilent Varian HS-20 Heater Nickle Wire 14 AWG, 80 inches long, Diffusion Vacuum Pump Replacement PartsAgilent Varian Part Number PN X3900-68006 This is a replacement heater nickle wire, 14 AWG, 80 inches long. Fits the Agilent Varian HS-20 Diffusion Pump. For location of the heater wire see figure #10 (diagram exploded view & parts illustration) below. (2 per heater required)

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Platen.Agilent Varian This is a replacement part heater platen (1 per diffusion pump). Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item #4 for heater platen location below.

Agilent Varian HS-32 Diffusion Pump, Replacement Crush PlateAgilent Varian Part Number PN K7246001 (Should be replaced when heater is replaced) This is a replacement crush plate.(1 each) Fits the Agilent Varian HS-32 Diffusion Pump. Should be replaced when heater is replaced. For location of the crush plate see item #13 (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, ReflectorAgilent Varian This is replacement reflector. Fits the Agilent Varian HS-2 Diffusion Pump.

Agilent Varian NHS-35 Upper Thermal Switch, Diffusion Vacuum Pump Replacement PartsAgilent 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.

Agilent Varian HS-16 Diffusion Pump, Heater Cover Plate.Agilent Varian Part Number PN 79308001 This is a replacement heater cover plate. Fits the Agilent Varian HS-16 Diffusion Pump. For location of the heater cover plate see item #15 (diagram exploded view & parts illustration) below.

Agilent Varian VHS-6 Diffusion Pump Heater Cover.This is the Agilent Varian VHS-6 diffusion pump heater cover. See No. 13 below in illustration for pump heater cover location.

Agilent Varian VHS400 Diffusion Pump SLOTTED Clamping Plate, PN R2667301 (sold as one each) These Agilent Varian VHS-10 are SLOTTED retrofit clamping plates. The Agilent Varian part number for this is R2667301 and its location is item #12 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian HS-16 Diffusion Pump, Replacement Clamping PlateAgilent Varian Part Number PN K4917001 (3 required per pump) This is a replacement clamping plate.(1 each) Fits the Agilent Varian HS-16 Diffusion Pump. 3 required per pump. For location of the clamping plate see item #13 (diagram exploded view & parts illustration) below.

Agilent Varian HS-16 Diffusion Pump, Heater Element NO leads, 200 Vac, 415 Vac, 2700 WattsAgilent Varian Part Number PN 647316035. (for HS-16 Pumps Built Before May 1990) This is a replacement heater element NO leads, 200 V, 415 V, 2700 W. (1 each) Fits the Agilent Varian HS-16 Diffusion Pump. (for HS-16 pumps built before May 1990) For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (3 required per pump)

Agilent Varian HS-20 Diffusion Pump, Heater Element no leads, 200 or 415 Vac, 2000 WattsAgilent Varian Part Number PN 647320060 (For pumps built before May 1990) This is a replacement heater element no leads, 200 or 415 V, 2000 W. (1 each) Fits the Agilent Varian HS-20 Diffusion Pump. For Pumps built before May 1990. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

Agilent Varian VHS-4 Air Cooled Diffusion Pump Heater Clamp This is a replacement heater clamp for the Agilent Varian VHS-4 Air Cooled Diffusion Pump. 1 required per pump.

Agilent Varian HS-20 Diffusion Pump, Heater Cover Plate.Agilent Varian Part Number PN 84497001 This is a replacement heater cover plate. Fits the Agilent Varian HS-20 diffusion vacuum pump. For location of the heater cover plate see item #15 (diagram exploded view & parts illustration) below.

Agilent Varian VHS-6 Diffusion Pump Replacement Heater, StoveTop Style, 120VAC, 2200W, 18.3A, 6.6OhmsAgilent Varian These Agilent Varian VHS-6 & VHS-250 heaters are OEM Agilent Varian replacement parts for the VHS-6 diffusion vacuum pumps with part number 647306125. These replacement diffusion pump heaters are designed to operate on 120 VAC producing 2200 watt of heat for a VHS-6, VHS-250 diffusion pump. These heater element pull 18.3 Amps at 120 VAC and have a 6.6 Ohms resistance across the element. These Agilent Varian VHS-6 heaters are shown as #8 in the illustration below.

Agilent Varian VHS-250 Diffusion Pump Heater Cover.PN L8997001 This is the Agilent Varian VHS-250 diffusion pump heater cover. See No. 13 below in illustration for pump heater cover location.

Agilent Varian HS-20 Diffusion Pump, Heater Element with leads, 200 Vac, 2000 WattsAgilent Varian Part Number PN 647320025 This is a replacement heater element with leads, 200 V, 2000 W. (1 each) Fits the Agilent Varian HS-20 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

Agilent Varian VHS-4 Extended Cold Cap, Mexican Hat, Diffusion Vacuum Pump Replacement PartsAgilent Varian These Agilent Varian VHS-4 extended cold caps are OEM Agilent Varian replacement parts for the VHS-4 diffusion vacuum pumps. The extended cold cap is sometimes referred to as a "Mexican Hat" due to its shape. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For removal installation procedures of cold cap see page 37 of instruction manual PDF below. These extended cold caps are OEM original Agilent Varian replacement parts, see item #16 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-32 Diffusion Pump, Heater Element with leads, 240/415/480 Vac, 4000 WattsAgilent Varian Part Number PN 647332010 This is a replacement diffusion pump heater element with leads, 4000W, 240V/415V/480V, for HS-32 Diffusion Pumps.

Varian VHS-4, VHS-6 and VHS-250 Old-Style Diffusion Vacuum Pump Bottom Heater CoverThese Varian Varian VHS-4, VHS-6 and VHS-250 diffusion vacuum pump replacement bottom heater covers are made of Aluminum and are direct replacements. The heater cover protects the bottom of the diffusion pump and the heater assemble. Other diffusion pump accessories are available on this web site.

Agilent Varian Optional Pump Ready 170ºF Thermal Switch for AX-65 Diffusion Pump.Agilent Varian This is a (Optional) Pump Ready thermal switch. This thermal Pump Ready switch, is to be attached to the side plate of the AX-65 Pump next to the over temperature thermal switch. This optional thermal switch can be connected to a light to show when the pump is at operating temperature. It is normally open and closes when the pump reaches operating temperature. The switch is set to close at 170ºF (operating temperature). See graphic for installation/location on the pump.

Agilent Varian Replacement Over Temperature 365ºF Thermal Switch for AX-65 Diffusion Pump Heater HarnessesAgilent Varian This is a 365ºF replacement thermal switch for the following AX-65 diffusion pump heater harnesses: 200W, 115 VAC heater harness 250W, 115 VAC heater harness 200W, 220 VAC heater harness 250W, 220 VAC heater harness 250W, 165 VAC heater harness 250W, 90 VAC heater harness This is a replacement over temperature thermal switch. A normally-closed, over temperature thermal switch has been attached to the diffusion pump body via the heater harness on the side of the pump. Loss of cooling, high temperatures, high pressure, or low fluid level causes the contacts of the thermal switch to open. When the problem has been corrected, the thermal switch automatically resets to closed. The switch is set to open at 365ºF. See #6 on (diagram exploded view & parts) illustration below for location.

Varian VHS-4 Old-Style Diffusion Pump Thermal Overload Switch Aluminum Cover BoxThese Varian VHS-4 diffusion vacuum pump replacement thermal overload switch covers are made of aluminum. They also include the replacement mounting hardware. The thermal switch is used to protect the diffusion pump from over heating which typically occurs from lack of cooling water.

Agilent Varian VHS-6 & VHS-4 Diffusion Pump Replacement Standard Cold Cap.Agilent Varian These Agilent Varian VHS-6 and VHS-4 diffusion pump standard cold caps are a replacement part that can be installed at the customer’s location. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For location of the cold cap please see item #1 on diagram exploded view & parts illustration shown below. For removal installation procedures of cold cap see page 37 of instruction manual PDF below. These standard cold caps are OEM original Agilent Varian replacement parts.

Varian VHS6 VHS250 Diffusion Vacuum Pump Bottom Heater CoverThese Varian VHS-6 and VHS-250 diffusion vacuum pump replacement bottom heater covers are made of Aluminum and are direct replacements. The heater cover protects the bottom of the diffusion pump and the heater assemble. Other diffusion pump accessories are available on this web site.

Agilent Varian Inlet Baffle Retrofit KF50 for AX-65 Diffusion PumpAgilent Varian This is a retrofit inlet baffle for the inlet KF50 of the AX-65 Vacuum Diffusion Pump. For location, see item #3 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-32 Diffusion Pump, Heater Element no leads, 240/415/480 Vac, 4000 WattsAgilent Varian Part Number PN 647332075 This is a replacement diffusion pump heater element no leads, for HS32 Diffusion Pump, 4000W, 240V/415V/480V, used on pumps built before May ’90 (six heaters required per pump) One heater consists of 2-120V heaters, right and left.

Agilent Varian Inlet Baffle for AX-65 Diffusion PumpAgilent Varian This is the inlet baffle for the AX-65 Diffusion Pump. For location of inlet baffle see item #3 on (diagram exploded view & parts illustration) below.

Varian VHS-6 Old-Style Diffusion Pump Thermal Overload Switch Aluminum Cover BoxThese Varian VHS-6 diffusion vacuum pump replacement thermal overload switch covers are made of aluminum. They also include the replacement mounting hardware. The thermal switch is used to protect the diffusion pump from over heating which typically occurs from lack of cooling water.

Varian VHS-250 Old-Style Diffusion Pump Thermal Overload Switch Aluminum Cover BoxThese Varian VHS-250 diffusion vacuum pump replacement thermal overload switch covers are made of aluminum. They also include the replacement mounting hardware. The thermal switch is used to protect the diffusion pump from over heating which typically occurs from lack of cooling water.

Agilent Varian VHS-10 Water Cooled Vacuum Diffusion Pump, 10 inch ASA Inlet Flange, 16 inch OD, Maximum Pumping Speed 5300 l/s Standard Cold Cap, (2) 208 VAC 2200 Watt Heaters, Agilent Varian. The Agilent Varian VHS-10 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. The VHS-10 pump is a rugged, general-purpose unit with an operating range of 1.7 x 10-3 to <5 x 10-9 Torr at 4400W. The Agilent Varian VHS-10 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 5300 l/s with standard cold cap) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 5x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-10 Diffusion Pump Includes: 10 Inch ASA Inlet Flange (16 Inch OD Flange, 12 Smooth Bolt Holes, 1" Diameter Holes) 2 inch ASA 6 inch OD Outlet Foreline Flange Standard Cold Cap Recommended Roughing Backing Pump: 30 CFM 5300 l/s Maximum Pumping Speed Air 208 VAC 3 ph (4400W) with (2) 2200 Watt Heaters Water Connections 1/8 in. FPT Tee Designed To Be Used With Santovac 5 or IVP 704 Diffusion Pump Oil, 1000cc (1.056 Qt.) full charge Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure. Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-10 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 3-phase 208, 240, 380, 480 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-10 diffusion pumps have ASA 10 inch inlet flange, operate on 3-phase 208 VAC, standard cold cap and has Agilent Varian part number F0426307. The Agilent Varian VHS-10 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-10 Water Cooled Vacuum Diffusion Pump, 10 inch ASA Inlet Flange, 16 inch OD, Maximum Pumping Speed 4200 l/s Extended Cold Cap, (2) 240 VAC 2200 Watt Heaters, Agilent Varian. The Agilent Varian VHS-10 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. The VHS-10 pump is a rugged, general-purpose unit with an operating range of 1.7 x 10-3 to <5 x 10-9 Torr at 4400W. The Agilent Varian VHS-10 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 4200 l/s with extended cold cap) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). The backstreaming rate of the unit is 5x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-10 Diffusion Pump Includes: 10 Inch ASA Inlet Flange (16 Inch OD Flange, 12 Smooth Bolt Holes, 1" Diameter Holes) 2 inch ASA 6 inch OD Outlet Foreline Flange Extended Cold Cap Recommended Roughing Backing Pump: 30 CFM 4200 l/s Maximum Pumping Speed Air 240 VAC 3 ph (4400W) with (2) 2200 Watt Heaters Water Connections 1/8 in. FPT Tee Designed To Be Used With Santovac 5 or IVP 704 Diffusion Pump Oil, 1000cc (1.056 Qt.) full charge Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure. Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-10 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 3-phase 208, 240, 380, 480 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-10 diffusion pumps have ASA 10 inch inlet flange, operate on 3-phase 240 VAC, extended cold cap and has Agilent Varian part number F0426318. The Agilent Varian VHS-10 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship the same day the order is placed.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 350W, 120VAC, for use with Santovac 5 oil. Agilent Varian This is a replacement part heater assembly (also known as heater element). 350 Watt, 120 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 350W, 240 VAC, for use with Santovac 5 oil. This is a replacement part heater assembly (also known as heater element). 350 Watt, 240 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 450W, 240 VAC, for use with Santovac 5 oil. This is a replacement part heater assembly (also known as heater element). 450 Watt, 240 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian AX-65 Diffusion Pump, Replacement Part Heater Harness, 250W, 90 VAC, with Thermal Switch, for use with Santovac 5 oilAgilent Varian This is a replacement part heater harness (also known as heater element) with thermal switch attached. 250 Watt, 90 VAC, for use with Santovac 5 oil. Fits the Agilent Varian AX-65 Diffusion Pump. See exploded view diagram label 5 for heater harness location below. For directions on how to replace the heater harness (heater element), scroll down to AVAILABLE DOWNLOADS and see pages A-3, A-4 in the AX-65 Service Manual PDF.

Agilent Varian AX-65 Diffusion Pump, Replacement Part Heater Harness, 250W, 115VAC, with thermal switch, for use with Santovac 5 oilAgilent Varian This is a replacement part heater harness (also known as heater element) with thermal switch attached. 250 Watt, 115 VAC, for use with Santovac 5 oil. Fits the Agilent Varian AX-65 Diffusion Pump. See exploded view diagram label 5 for heater harness location below. For directions on how to replace heater harness (heater element) scroll down to AVAILABLE DOWNLOADS and see pages A-3, A-4 in the AX-65 Service Manual PDF.

Agilent Varian AX-65 Diffusion Pump, Replacement Part Heater Harness, with thermal switch, 250W, 165 VAC, for use with Santovac 5 oilAgilent Varian This is a replacement part heater harness (also known as heater element) with thermal switch attached. 250 Watt, 165 VAC, for use with Santovac 5 oil. Fits the Agilent Varian AX-65 Diffusion Pump. See exploded view diagram label 5 for heater harness location below. For directions on how to replace heater harness (heater element), scroll down to AVAILABLE DOWNLOADS and see pages A-3, A-4 in the AX-65 Service Manual PDF.

Replacement Thermocouple for Measuring Temperature of Agilent Varian AX-65 Diffusion Vacuum Pumps. Comparable to Thermocouple Agilent Varian (now discontinued). Replacement Thermocouple for measuring temperature of Agilent Varian AX-65 diffusion vacuum pumps, comparable to Thermocouple Agilent Varian (now discontinued). One end is connected to the diffusion pump the other end is connected to a temperature gauge.

Agilent Varian Bolts to Attach ASA Gate Valves to ASA Diffusion Pumps 3/4-10 1-1/4" Length Hex Bolt - Course Thread, 1 each. These are bolts to attach ASA Gate Valves to ASA Diffusion pumps, ASA sizes 6, 8 and 10 inch. One each, size 3/4-10 1-1/4" Length Hex Bolt - Course Thread.

Agilent Varian VHS10 Diffusion Pump Tubular Heater 240VAC, 2550W, 10.6 A, 22.6 Ohms, Per Heater, (sold as one each) These Agilent Varian VHS-10 diffusion vacuum pump Tubular-Style replacement heaters are for use with 240 VAC input power. These heaters pull 2550 Watts, 10.6 Amps and have a room temperature resistance of 22.6 Ohms. These heaters are designed to be operated by 240 VAC, two heaters are required for (5100 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310155 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS400 Diffusion Pump Tubular Heater 240VAC, 2550W, 10.6 A, 22.6 Ohms, Per Heater, PN 647310155 (sold as one each) These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 240 VAC input power. These heaters pull 2550 Watts, 10.6 Amps and have a room temperature resistance of 22.6 Ohms. These heaters are designed to be operated by 240 VAC, two heaters are required for (5100 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310155 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian NHS-35 Diffusion Pump, Heater Element no leads, 240/480 Vac, 4000 WattsAgilent Varian Part Number PN 647235248 This is a replacement heater element no leads, 240/480V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. (Used on pumps built before May 1990) For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

Agilent Varian VHS10 Diffusion Pump Tubular Heater 380VAC, 2200W, 5.8A, 66 Ohms, Per Heater, PN 647310160 (sold as one each) These Agilent Varian VHS-10 diffusion vacuum pump Tubular-Style replacement heaters are for use with 380 VAC input power. These heaters pull 2200 Watts, 5.8 Amps and have a room temperature resistance of 66 Ohms. These heaters are designed to be operated by 380 VAC, two heaters are required for (4400 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310160. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS400 Diffusion Pump Tubular Heater 380VAC, 2200W, 5.8A, 66 Ohms, Per Heater, PN 647310160 (sold as one each) These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 380 VAC input power. These heaters pull 2200 Watts, 5.8 Amps and have a room temperature resistance of 66 Ohms. These heaters are designed to be operated by 380 VAC, two heaters are required for (4400 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310160. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS10 Diffusion Pump Tubular Heater 380VAC, 2550W, 6.7A, 56.6 Ohms, Per Heater, PN 647310165 (sold as one each) These Agilent Varian VHS-10 diffusion vacuum pump Tubular-Style replacement heaters are for use with 380 VAC input power. These heaters pull 2550 Watts, 6.7 Amps and have a room temperature resistance of 56.6 Ohms. These heaters are designed to be operated by 380 VAC, two heaters are required for (5100 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310165 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS400 Diffusion Pump Tubular Heater 380VAC, 2550W, 6.7A, 56.6 Ohms, Per Heater, PN 647310165 (sold as one each) These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 380 VAC input power. These heaters pull 2550 Watts, 6.7 Amps and have a room temperature resistance of 56.6 Ohms. These heaters are designed to be operated by 380 VAC, two heaters are required for (5100 Watts of heating power). For heater assembly replacement instructions see page 43 in the instruction manual .pdf below. The Agilent Varian part number for this heater is 647310165 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS-10 Diffusion Pump Heater Wire, 10 AWG, Sold by the foot. This is the Agilent Varian VHS-10 Diffusion Pump stranded nickel heater wire, Sold by the foot. (3 - 42 inch lengths required for total replacement per pump). See No. 9 below in illustration for heater wire location.

Agilent Varian VHS10 Diffusion Pump SLOTTED Clamping Plate, PN R2667301 (sold as one each) These Agilent Varian VHS-10 are SLOTTED retrofit clamping plates. The Agilent Varian part number for this is R2667301 and its location is item #12 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

Agilent Varian VHS-10 Extended Cold Cap, Mexican Hat, Diffusion Vacuum Pump Replacement Parts Agilent Varian Part Number L8917301 These Agilent Varian VHS-10 extended cold caps are OEM Agilent Varian replacement parts for the VHS-10 diffusion vacuum pumps. The extended cold cap is sometimes referred to as a Mexican Hat due to its shape. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For removal installation procedures of cold cap see page 41 of instruction manual PDF below. These extended cold caps are OEM original Agilent Varian replacement parts with part number L8917301, see item #2 on (diagram exploded view & parts illustration) below.

Agilent Varian VHS-10 Diffusion Pump Replacement Standard Cold Cap. Agilent Varian PN F0429301. These Agilent Varian VHS-10 diffusion pump standard cold caps are a replacement part that can be installed at the customer's location. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For location of the cold cap please see item #1 on diagram exploded view & parts illustration shown below. For removal installation procedures of cold cap see page 41 of instruction manual PDF below. These standard cold caps are OEM original Agilent Varian replacement parts with part number F0429301.

Agilent Varian HS-16 Diffusion Pump, Heater Element NO leads, 480 Vac, 2700 WattsAgilent Varian Part Number PN 647316045. (for HS-16 Pumps Built Before May 1990) This is a replacement heater element NO leads, 480 V, 2700 W. (1 each) Fits the Agilent Varian HS-16 Diffusion Pump. (for HS-16 pumps built before May 1990) For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (3 required per pump)

Agilent Varian VHS-10 Diffusion Pump Heater Insulator, Replacement Part, For New Style Diffusion Pumps Agilent Varian Part Number L8914001 These Agilent Varian VHS-10 diffusion pump heater insulator covers are used to insulate the heater from pumps bottom cover. These heater insulators are used in the new-style diffusion pumps. These are OEM Agilent Varian replacement parts with part number L8914001, see item # 13 below in illustration for heater insulator location.

Agilent Varian HS-16 Diffusion Pump, Heater Element with leads, 200 Vac, 415 Vac, 3200 WattsAgilent Varian Part Number PN 647316023 This is a replacement heater element with leads, 200 V, 415 V, 3200 W. (1 each) Fits the Agilent Varian HS-16 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (3 required per pump)

Agilent Varian NHS-35 Diffusion Pump, Heater Element with leads, 240/480 Vac, 4000 WattsAgilent Varian Part Number PN 647335020 This is a replacement heater element with leads, 240/480V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

Agilent Varian NHS-35 Diffusion Pump, Heater Element with leads, 440 Vac, 4000 WattsAgilent Varian Part Number PN L6383011 This is a replacement heater element with leads, 440V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

Agilent Varian HS-16 Diffusion Pump, Heater Element with leads, 480 Vac, 2700 WattsAgilent Varian Part Number PN 647316030 This is a replacement heater element with leads, 480V, 2700 W. (1 each) Fits the Agilent Varian HS-16 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (3 required per pump)

Agilent Varian HS-16 Diffusion Pump, Heater Element with leads, 480 Vac, 3200 WattsAgilent Varian Part Number PN 647316033 This is a replacement heater element with leads, 480V, 3200 W. (1 each) Fits the Agilent Varian HS-16 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (3 required per pump)