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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DCL
Whiting, US
★★★★★ 4
Very nice.
Color: Tie-dye Beige, Size: Throw(50"x60")
Super soft the colors are lovely, a bit pricey but looks great at the end of the bed.
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Reviewed in the United States on May 13, 2026
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Todd Giesen
Cuba, US
★★★★★ 5
Delivers Perfectly
Color: Tie-dye Beige, Size: Twin(60"x80")
Beautiful, fluffy, and comfy.
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Reviewed in the United States on May 27, 2026
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Lesley Berg
West Palm Beach, US
★★★★★ 5
Beautiful blanket
Color: Purple Rainbow, Size: Throw(50"x60")
So soft and beautiful colors my granddaughter is in heaven with this blanket I just love it and it matches her rug we got her perfect both are beautiful and so soft
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Reviewed in the United States on May 5, 2026
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K4TR1N3
Bozeman, US
★★★★★ 5
Perfect protection from the cold
Color: Frosty Black, Size: Twin(60"x80"), Color: Frosty Black, Size: Twin(60"x80")
This blanket is the perfect thickness, warm but not too warm. I have a bigger than twin but not quit a double and it fits perfect. The design is perfect. In grey it matches my black qnd white design perfectly. Quality materials. Soft cozy and comfortable. Its the perfect cure for winter cold waether. The undeneath is a nice soft velour finish. I love this blanket
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Reviewed in the United States on February 12, 2026
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Shea
Houston, US
★★★★★ 5
Cute soft and cuddly
So soft, cute and cuddly. The quality of softness and materials used are amazing. It’s light weight and fluffy but not thin. The size is perfect for cuddling. Not small sized. Gifted this to my mother for her birthday. She loves it says it’s so soft on her skin. Don’t imagine I would have an issue with washing or drying. Price was awesome and definitely would purchase again.
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Reviewed in the United States on September 30, 2025

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