Sales and Service
855 882 2886
0 Items
$0.00
Find us on:
Main Categories

- Thread Sealants
- Mounting Kits
- Leak Detectors
- Shipping Crates
- Cooling Water Circulators
- Laboratory Pipette Washers
- Laboratory Stirrers
- Muffle Furnace
- Rotary Evaporators
- Cold Traps
Category of products: EXT Series
- Thread Sealants
- Mounting Kits
- Leak Detectors
- Shipping Crates
- Cooling Water Circulators
- Laboratory Pipette Washers
- Laboratory Stirrers
- Muffle Furnace
- Rotary Evaporators
- Cold Traps
Found 3 products
Item#: PN00175 Mfr Part#: B73601000 Manufacturer: Edwards Vacuum
PRICE: $5,950.00
WEB SAVINGS: $450.00
YOU PAY: $5,500.00

Edwards EXT 250 Turbo Pump, DN 100 ISO Inlet Flange, B73601000  , KF25 Outlet Flange

 

Edwards EXT 250Hi Overview:


The turbomolecular pump is made from a multi-stage axial-flow turbine which is optimised for operation in molecular flow conditions. The drag pump is made from pumping channels formed by helical grooves. The drag pump is designed for operation at higher pressures than conventional turbomolecular pumps.

The light alloy rotor is machined from one piece to form the angled blades of the turbomolecular pump. The rotor blades rotate between angled stator blades which are supported by spacer rings. The rotor and stator blades have an open structure at the pump inlet, and a more closed structure at the outlet. This configuration gives an optimum combination of pumping speed and compression when pumping gases of both high and low molecular weight. For the blades to be effective, their speed must be close to the thermal velocity of the gas. The rotor therefore rotates at up to 60000 r min-1.

Gas from the inlet is compressed through each of the bladed stages of the turbomolecular pump and transferred to the drag pump. In the drag pump stages, the gas is further compressed as it is pumped around the channels formed by the helical grooves.

The rotating assembly is supported at the inlet end by a frictionless magnetic bearing and by a precision ceramic ball bearing at the outlet end. The ball bearing is lubricated from an oil reservoir and wick mechanism.

All of the pumps are supplied with an inlet-screen fitted in the bore of the inlet-flange. The EXT250Hi pumps are also supplied with an inlet-strainer which fits in the interstage-port. The inlet-screen and inlet-strainer protect the pump against damage which would be caused by debris which enters the pump. The inlet-screen also protects you from the sharp blades in the pump.

All of the pumps have a vent-port you can use to vent the pump and your vacuum system to atmospheric pressure. The vent-port introduces vent gas part way up the pump rotor; this ensures maximum cleanliness. The pump is supplied with a manual vent-valve fitted to the vent-port.

All of the pumps have a purge-port in the motor and bearing housing chamber. In order to protect the bearing lubricant from the effects of high oxygen concentrations, you can introduce an inert purge gas through the purge-port. You can fit an optional vent-port adaptor and purge restrictor to the purge-port to control the flow rate of the purge gas and to filter the gas supply.

 

Edwards EXT 250 Hi Dimensions:


Edwards EXT250Hi Turbo Pump, DN 100 ISOK Inlet Flange, B740-01-000


Click Here for Edwards EXT 250 Manual


A&J Vacuum Services offers full repair/service of Edwards EXT 250, along with all other brands offered on our website. AJVS also services Leybold Turbo Pumps. Please contact us for information about our service and repair program or click http://www.ajvs.com/service.php to access our services page. We also offer emergency service upon request. For more information, please email A&J Vacuum Services at info@ajvs.com or call (973) 249-0854. Thank you for choosing AJVS as your supplier.


Condition: Remanufactured Call us for Availability
Item#: PN00177 Mfr Part#: B74001000 Manufacturer: Edwards Vacuum
PRICE: $5,750.00
WEB SAVINGS: $900.00
YOU PAY: $4,850.00

Edwards EXT 250Hi Turbo Pump, DN 100 ISOK Inlet Flange, B74001000, EXT250 HI B740-01-000

 

Edwards EXT 250Hi Overview:


The turbomolecular pump is made from a multi-stage axial-flow turbine which is optimised for operation in molecular flow conditions. The drag pump is made from pumping channels formed by helical grooves. The drag pump is designed for operation at higher pressures than conventional turbomolecular pumps.

The light alloy rotor is machined from one piece to form the angled blades of the turbomolecular pump. The rotor blades rotate between angled stator blades which are supported by spacer rings. The rotor and stator blades have an open structure at the pump inlet, and a more closed structure at the outlet. This configuration gives an optimum combination of pumping speed and compression when pumping gases of both high and low molecular weight. For the blades to be effective, their speed must be close to the thermal velocity of the gas. The rotor therefore rotates at up to 60000 r min-1.

Gas from the inlet is compressed through each of the bladed stages of the turbomolecular pump and transferred to the drag pump. In the drag pump stages, the gas is further compressed as it is pumped around the channels formed by the helical grooves.

The rotating assembly is supported at the inlet end by a frictionless magnetic bearing and by a precision ceramic ball bearing at the outlet end. The ball bearing is lubricated from an oil reservoir and wick mechanism.

All of the pumps are supplied with an inlet-screen fitted in the bore of the inlet-flange. The EXT250Hi pumps are also supplied with an inlet-strainer which fits in the interstage-port. The inlet-screen and inlet-strainer protect the pump against damage which would be caused by debris which enters the pump. The inlet-screen also protects you from the sharp blades in the pump.

All of the pumps have a vent-port you can use to vent the pump and your vacuum system to atmospheric pressure. The vent-port introduces vent gas part way up the pump rotor; this ensures maximum cleanliness. The pump is supplied with a manual vent-valve fitted to the vent-port.

All of the pumps have a purge-port in the motor and bearing housing chamber. In order to protect the bearing lubricant from the effects of high oxygen concentrations, you can introduce an inert purge gas through the purge-port. You can fit an optional vent-port adaptor and purge restrictor to the purge-port to control the flow rate of the purge gas and to filter the gas supply.

 

Edwards EXT 250 Hi Dimensions:


Edwards EXT250Hi Turbo Pump, DN 100 ISOK Inlet Flange, B740-01-000


Click Here for Edwards EXT 250 Manual


A&J Vacuum Services offers full repair/service of Edwards EXT 250, along with all other brands offered on our website. AJVS also services Leybold Turbo Pumps. Please contact us for information about our service and repair program or click http://www.ajvs.com/service.php to access our services page. We also offer emergency service upon request. For more information, please email A&J Vacuum Services at info@ajvs.com or call (973) 249-0854. Thank you for choosing AJVS as your supplier.


Condition: Remanufactured Call us for Availability
Item#: PN07156 Mfr Part#: B73602000 Manufacturer: Edwards Vacuum
PRICE: $5,750.00
WEB SAVINGS: $755.00
YOU PAY: $4,995.00

Edwards EXT 250 Turbo Pump, DN 100 CFF Inlet Flange, B73602000

 

Edwards EXT 250Hi Overview:


The turbomolecular pump is made from a multi-stage axial-flow turbine which is optimised for operation in molecular flow conditions. The drag pump is made from pumping channels formed by helical grooves. The drag pump is designed for operation at higher pressures than conventional turbomolecular pumps.

The light alloy rotor is machined from one piece to form the angled blades of the turbomolecular pump. The rotor blades rotate between angled stator blades which are supported by spacer rings. The rotor and stator blades have an open structure at the pump inlet, and a more closed structure at the outlet. This configuration gives an optimum combination of pumping speed and compression when pumping gases of both high and low molecular weight. For the blades to be effective, their speed must be close to the thermal velocity of the gas. The rotor therefore rotates at up to 60000 r min-1.

Gas from the inlet is compressed through each of the bladed stages of the turbomolecular pump and transferred to the drag pump. In the drag pump stages, the gas is further compressed as it is pumped around the channels formed by the helical grooves.

The rotating assembly is supported at the inlet end by a frictionless magnetic bearing and by a precision ceramic ball bearing at the outlet end. The ball bearing is lubricated from an oil reservoir and wick mechanism.

All of the pumps are supplied with an inlet-screen fitted in the bore of the inlet-flange. The EXT250Hi pumps are also supplied with an inlet-strainer which fits in the interstage-port. The inlet-screen and inlet-strainer protect the pump against damage which would be caused by debris which enters the pump. The inlet-screen also protects you from the sharp blades in the pump.

All of the pumps have a vent-port you can use to vent the pump and your vacuum system to atmospheric pressure. The vent-port introduces vent gas part way up the pump rotor; this ensures maximum cleanliness. The pump is supplied with a manual vent-valve fitted to the vent-port.

All of the pumps have a purge-port in the motor and bearing housing chamber. In order to protect the bearing lubricant from the effects of high oxygen concentrations, you can introduce an inert purge gas through the purge-port. You can fit an optional vent-port adaptor and purge restrictor to the purge-port to control the flow rate of the purge gas and to filter the gas supply.

 

Edwards EXT 250 Hi Dimensions:


Edwards EXT250Hi Turbo Pump, DN 100 ISOK Inlet Flange, B740-01-000


Click Here for Edwards EXT 250 Manual


A&J Vacuum Services offers full repair/service of Edwards EXT 250, along with all other brands offered on our website. AJVS also services Leybold Turbo Pumps. Please contact us for information about our service and repair program or click http://www.ajvs.com/service.php to access our services page. We also offer emergency service upon request. For more information, please email A&J Vacuum Services at info@ajvs.com or call (973) 249-0854. Thank you for choosing AJVS as your supplier.


Condition: Remanufactured Call us for Availability
Contact
A&J Vacuum Services
16 Somerset Place, Clifton, NJ 07012
Customer Service
Phone: 973-249-0854, Fax: 973-249-0855
Service Hours
8:00am to 5:00pm, Monday thru Friday EST
All trademarks, trade names or logons mentioned or used are the property of their respective owners.