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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Stone Green
Boise, US
★★★★★ 3
Not bad
Color: Grey, Size: 88" W
Claims to be non see through but you can, easy to assemble but instructions aren't good. Decent money value, quality is okay. Good fit, not very sturdy.
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Reviewed in the United States on May 11, 2026
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Tessa
Chelsea, US
★★★★★ 1
They bend easily and hard to keep up
Color: Black, Size: 88" W
To flimsy, they are see through, not at all what is pictured
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Reviewed in the United States on May 12, 2026
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Christina Jackson
Carnegie, US
★★★★★ 5
Perfect for Creating Instant Privacy
Color: Black, Size: 88" W
I just set this up and it instantly transformed the space. It’s lightweight but stands securely, and the fabric panels look clean and modern. Super easy to fold and move around—perfect for creating privacy in a bedroom or home office without any permanent changes
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Reviewed in the United States on February 12, 2026
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Zhichao Wang
Dallas, US
★★★★★ 5
Lighter Than Expected — Perfect for My Garage Workspace!
I just received this room divider and haven’t had a chance to set it up yet, but I’m already impressed. It’s much lighter than I expected — I was worried it would be bulky and unstable, but that doesn’t seem to be the case at all. It feels easy to handle and still solid enough for what I need. I plan to use it in my garage to section off a small workspace, and it looks like it’s going to work perfectly!
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Reviewed in the United States on May 17, 2025
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Hls
West Palm Beach, US
★★★★★ 4
As expected
As expected
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Reviewed in the United States on January 8, 2026

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