This is a replacement Sight Glass Kit. Fits the Agilent Varian VHS-400 Diffusion Pump. For location of the sight glass kit see item #3 on (diagram exploded view & parts illustration) below.

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.

This 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.

This is the Agilent Varian VHS-400 Diffusion Pump stranded nickel heater wire kit, 10 AWG wire (15ft.) Terminal Strip Molex, and 10 lugs. See No. 8 below in illustration for heater wire location.

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

Varian Agilent Part Number K7667001 These Agilent Varian VHS-400 diffusion pump crush plates are for Agilent Varian diffusion vacuum pumps. The crush plate is required during heater replacement. Other diffusion pump accessories are available on this web site.

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.

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 Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 480 VAC input power. These heaters pull 2200 Watts, 4.6 Amps and have a room temperature resistance of 104 Ohms. These heaters are designed to be operated by 480 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 647310170. Other diffusion pump accessories are available on this web site.

These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 208 VAC input power. These heaters pull 2200 Watts, 10.6 Amps and have a room temperature resistance of 19.6 Ohms. These heaters are designed to be operated by 208 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 647310140. Other diffusion pump accessories are available on this web site.

These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 208 VAC input power. These heaters pull 2550 Watts, 12.2 Amps and have a room temperature resistance of 17 Ohms. These heaters are designed to be operated by 208 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 647310145 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.

These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 240 VAC input power. These heaters pull 2200 Watts, 9.2 Amps and have a room temperature resistance of 26 Ohms. These heaters are designed to be operated by 240 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 647310150. Other diffusion pump accessories are available on this web site.

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.

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.

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.

These Agilent Varian VHS-400 diffusion vacuum pump Tubular-Style replacement heaters are for use with 480 VAC input power. These heaters pull 2550 Watts, 5.3 Amps and have a room temperature resistance of 90.4 Ohms. These heaters are designed to be operated by 480 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 647310175 and its location is item #10 in graphic diagram and description below. Other diffusion pump accessories are available on this web site.