Agilent Varian Part Number 85826301 The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes:

Agilent Varian Part Number 85826311 The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes:

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: 6 Inch ASA Inlet Flange (11 Inch OD Flange, 8 Smooth Bolt Holes, 0.81" Diameter Holes)

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: 6 Inch ASA Inlet Flange (11 Inch OD Flange, 8 Smooth Bolt Holes, 0.81" Diameter Bolts)

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: 6 Inch ASA Inlet Flange (11 Inch OD Flange, 8 Smooth Bolt Holes, 0.81" Diameter Hole)

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: 6 Inch ASA Inlet Flange (11 Inch OD Flange, 8 Smooth Bolt Holes, 0.81" Diameter Bolts)

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

The Agilent Varian VHS-6 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-6 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to / min, without the use of any cooled cold cap. This Agilent Varian VHS-6 Diffusion Pump Includes: ISO 200K Inlet Flange no holes use LF ISO claw clamps for mating

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

This is a Thermal Switch Kit. Fits the Agilent Varian Vhas-4 and VHS-6 Diffusion Pump. For location of the baffle retaining ring see item #7 on (diagram exploded view & parts illustration) below. This Thermal Switch Kit includes: Thermal Switch Box Insulator

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 with part number 86488301.

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 parts with part number F6455001, see item #2 and #18 on (diagram exploded view & parts illustration) below.

These Agilent Varian VHS-6 diffusion pump jet assemblies and splash baffle are OEM Agilent Varian replacement parts for the VHS-6 diffusion vacuum pumps. This kit includes the complete jet assembly components, see the jet assembly referenced in Fig. 3-3 in instruction manual PDF below. These are original OEM Agilent Varian replacement parts for the VHS-6 diffusion pump having part number F3365301, see item #4 in the diagram exploded view & parts illustration below.

These Agilent Varian VHS-6 & VHS-250 diffusion pump replacement foreline baffle assemblies are OEM Agilent Varian replacement parts with part number L9172301. The foreline baffle is located in the roughing line exhaust arm of the diffusion pump. They are designed to help prevent diffusion pump oil from being transported to the roughing pump under high throughput conditions. See the VHS-6 diffusion pump roughing line arm noted by balloon #6 in the illustration below.

This is a replacement Sight Glass Kit. Fits the Agilent Varian VHS-6 Diffusion Pump. For location of the sight glass kit see item #3 on (diagram exploded view & parts illustration) below.

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 VHS-6 Diffusion Pump Replacement Standoff Ceramic Bushing Insulator, for Cold Cap. For location see item #22 on illustration below.

These Agilent Varian VHS-6 diffusion pump heater wire lugs are OEM Agilent Varian replacement parts with part number 648056680. 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.

These Agilent Varian VHS-6 & VHS-250 diffusion pump heater clamp assemblies are OEM Agilent Varian replacement parts with part number 86643301. These clampling plates help transfer heat from the diffusion pump heater to the oil inside the pump. these clamping plate kits include: clamping plate, cover plate, and insulator, see #11 abc below in the illustration below.

This is the Agilent Varian VHS-6 & VHS-250 diffusion pump heater clamp plate. See No. 11c below in illustration for heater clamp plate location.

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

This is the Agilent Varian VHS-6 Diffusion Pump stranded nickel heater wire, 10 AWG, 36 inches long. (3 - 36 inch lengths required for total replacement per pump). See No. 9 below in illustration for heater wire location.

This is the Agilent Varian VHS-6 ASA (ASA 6 in.) Diffusion Pump O-Ring Kit. O-Ring Kit Contains: 3 Butyl inlet flange O-ring, ASA 6 inch, Parker No. 2-267 3-Butyl-N foreline flange O-ring, ASA 1.5 inch, 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

This is the Agilent Varian VHS-6 diffusion pump heater cover plate. See No. 11a below in illustration for pump heater cover plate location.

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.

These Agilent Varian VHS-6 & VHS-250 heaters are OEM Agilent Varian replacement parts for the VHS-6 diffusion vacuum pumps with part number 647306175. 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 10.6 Amps at 208 VAC and have a 19.6 Ohms resistance across the element. These Agilent Varian VHS-6 heaters are shown as #8 in the illustration below.

These Agilent Varian VHS-6 & VHS-250 heaters are OEM Agilent Varian replacement parts for the VHS-6 diffusion vacuum pumps with part number 647306225. 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 elements pull 9.2 Amps at 208 VAC and have a 26 Ohms resistance across the element. These Agilent Varian VHS-6 heaters are shown as #8 in the illustration below.

These 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.

These Varian VHS-6 and VHS-250 diffusion vacuum pump replacement ceramic fiber heater insulating blankets are 1/4" thick alumino-silicate (heat resistant material). This heater insulation is a direct replacement with Varian part number L8998001. Other diffusion pump accessories are available on this web site.

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.

These 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.