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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Michelle Rode
Houston, US
★★★★★ 5
Jackets
Size: Small, Color: Safety Green
What a great value! I bought three jackets for my husband for work. He loves them...they're comfortable and lightweight! Covers his upper body and durable.
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Reviewed in the United States on May 14, 2026
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AMZN Reviewer
Draper, US
★★★★★ 5
Comfy and warm for everyday wear
Size: Medium, Color: Navy Full Zip
I bought this Fruit of the Loom Eversoft Fleece Hoodie for my husband and he realy likes how soft it feels on the inside. The fabric is thick enough to keep him warm during his morning walks but it is still breathable so he doesnt get too sweaty while he is moving around. It has that moisture-wicking feature which is great because it stays dry even when it is a bit humid outside. The fit is just right and the hood stays up good without being too tight around his neck. It is hard to find hoodies that dont pill up after the first wash but this one has held up great so far and still looks brand new. For the price it is a total steal and much better quality than some of the more expensive brands we have tried before. I will definitely be ordering a few more colors for him soon.
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Reviewed in the United States on January 4, 2026
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Kellarease
Phoenix, US
★★★★★ 5
PERFECT!
Size: XX-Large, Color: Khaki Heather Full Zip
Most perfectly soft, warm, wonderful zip up hoodie, EVER! Own three and ordered a couple for family members who had borrowed mine! A must have!
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Reviewed in the United States on May 25, 2026
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G.L.
Louisville, US
★★★★★ 3
Thinner fabric than usual.
Size: Large, Color: Black Heather Full Zip
Good quality, but much thinner fabric than my other hoodie sweatshirts. Because of this, I have not been wearing it, but instead I've been wearing the thicker ones I already owned. This item was a good price; now I see why. It's too light for winter, and too heavy for summer. Not sure when it will be useful.
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Reviewed in the United States on May 17, 2026
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JREMUSIC
Carnegie, US
★★★★★ 5
Good value
Size: 10.5, Color: Black/Black
They fit and they stay on my feet (I was worried because these are slip-ons).
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Reviewed in the United States on May 31, 2026

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