Welch DuoSeal High-Vacuum Pump; 0.9 cfm/1x10(-4) Torr/115 V
SKU: 49541068776

Welch DuoSeal High-Vacuum Pump; 0.9 cfm/1x10(-4) Torr/115 V

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Description

Welch DuoSeal High-Vacuum Pump; 0.9 cfm/1x10(-4) Torr/115 VProduct Details High contamination tolerance Ultimate vacuum <0. 001 Torr Low RPM for long service life Welch 1400B 01 Owner's Manual Description The Welch 1400B 01 DuoSeal Vacuum Pump is a rugged and robust vacuum pump for applications requiring pressures < 1 Torr. The Welch vacuum pump 1400B 01 achieves < 0. 001 Torr with a pumping speed of 25 liters min (0. 9 CFM). Rugged oil seal pumps for a wide variety of vacuum needs, including Schlenk drying

Product Details

  • High contamination tolerance
  • Ultimate vacuum <0.001 Torr
  • Low RPM for long service life

Welch 1400B-01 Owner's Manual

Description

The Welch 1400B-01 DuoSeal Vacuum Pump is a rugged and robust vacuum pump for applications requiring pressures < 1 Torr. The Welch vacuum pump 1400B-01 achieves < 0.001 Torr with a pumping speed of 25 liters/min (0.9 CFM).

Rugged oil-seal pumps for a wide variety of vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pulley drive enables low pump rpm operation – reduces friction, oil temperature, and oil degradation. Large oil reservoir minimizes contamination effects and extends maintenance intervals. Use of a cold trap is recommended to protect the pump and enhance vacuum levels.

Two stage, oil sealed vacuum pumps should not be operated continuously at pressures above 1 Torr. Operating this DUOSEAL pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty.

Product Specifications

Model Number

WELCH-1400B-01

Applications

Vacuum Manifolds, (Schlenk Lines), High boiling point evaporations (to 195 deg. C), Glove boxes, General laboratory.

Type

Belt-Drive Vacuum Pump

Free Air Displacement @60Hz

0.9 CFM (25 l/min)

Ultimate Pressure

0.001 Torr

Pump RPM

580

Oil Capacity

0.62 qt (0.59 l)

Motor Horsepower (watts)

1/3hp (250W)

Adjustable Vac. / Gas Ballast

Yes

Tubing Needed

7/16" (11 mm)

Intake Thread NPT

3/4-20 straight thread

Exhaust Thread NPT

3/4-20 straight thread

Overall Dimensions LxWxH

17.8" x 9" x 12.6"

Wiring

115V, 60 hz

Shipping Notes
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Exchange/Return Notes
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SKU: 49541068776

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Linda Cleveland
New York, US
★★★★★ 5
Very sturdy
Color: Hunter Green
Beautiful! Perfect for everything I need it to hold!
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Reviewed in the United States on February 25, 2026
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David
Dallas, US
★★★★★ 5
Spacious
Color: Black
Spacious and elegant
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Reviewed in the United States on March 17, 2026
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Kathleen Dallmeier
Whiting, US
★★★★★ 5
Very nice looking
Color: Black
It seems well made and just what i needed.
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Reviewed in the United States on March 30, 2026
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Kyle M
Louisville, US
★★★★★ 5
Luxury Organization
Color: Pebble Black, Size: 9.5in x 7.9in
Keep your keys, wallet, and all other every day carry items in one, high quality location. Very nice material and build quality that accessorizes my dresser perfectly. The size is appropriate for everything that belongs in your pockets. Overall the best value for your $ I’ve seen, especially if you can catch a discount.
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Reviewed in the United States on March 30, 2026
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Daniel Fuller
Grantham, US
★★★★★ 5
Good quality, good looking
Color: Sand Brown, Size: 9.5in x 7.9in
High quality build and nice-looking. Perfect for my guest room, where people leave wallets and keys and chapstick and sunglasses and whatnot. Love it
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Reviewed in the United States on February 13, 2026

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