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

Sale price$1336.50 Regular price$1485.00
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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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Davita Joy
Cuba, US
★★★★★ 5
Excellent Buy
Color: Glue-Free Surface - Round, Set name: Set of 3 (S, M, XL)
We are in an ongoing process to reduce our dependence on plastics. These bamboo cutting boards are stunning, very well made, and easy to care for. I do recommend a wax to keep the surface shiny. Delighted with this purchase!
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Reviewed in the United States on May 29, 2026
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Verified Purchase
Joy Livingwell
Chelsea, US
★★★★★ 5
Beautiful, high-quality, easy to clean, pleasant to use, no glue on food-facing surfaces
Color: Glue-Free Surface - Round, Set name: Set of 3 (S, M, XL)
I love these cutting boards! I've had them about 3 weeks, and use them multiple times per day. They are flat, rigid, lightweight, easy to handle, easy to clean, dry fast, and the range of sizes is great. Much better than the plastic cutting boards they replaced! The top and bottom of each cutting board is a single piece of bamboo. On the larger boards, one or more darker bands across the board show the bamboo's natural joints, called nodes. The boards are gorgeous to look at, a pleasure to work on, and nice to touch. (I LOVE the rounded edges.) Each board is a sandwich: top, core, bottom, with all joints on the edges of the board so no glued joint touches your food. The working surfaces smell only of bamboo. (If I sniff the edges where the glued joints are, I can faintly smell wood glue.) The boards are finished with odorless food-grade mineral oil. After 2 weeks of daily use and detergent scrubs, I started to see a slight dulling of the finish. I refreshed them using the same butcher block oil (odorless food-grade mineral oil) I use on wooden cutting boards. I made sure the bamboo was thoroughly dry, wiped on a small amount of oil, and let them dry overnight in my vertical cutting board rack. This returned the finish to like-new condition.
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Reviewed in the United States on February 6, 2025
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Verified Purchase
Love to Listen
Chelsea, US
★★★★★ 5
Customer Approved
Color: Glue-Free Surface - Round, Set name: Set of 3 (S, M, XL)
Very good. Thanks for the proper care instructions. Not too heavy and good sizing, A+.
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Reviewed in the United States on May 29, 2026
J
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Jack Houghton
Natrona Heights, US
★★★★★ 4
Nice bamboo cutting board set.
Color: Glue-Free Surface - Round, Set name: Set of 3 (S, M, XL)
So far have held up very well, and I feel better about not using plastic cutting boards. Good sizes, fairly easy to wash, but it’s a shame you can’t put them in the dishwasher. Overall a very good, sturdy product.
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Reviewed in the United States on March 9, 2026
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Michelle Thibault
Fort Morgan, US
★★★★★ 5
Best cutting boards
Color: Glue-Free Surface - Round, Set name: Set of 3 (S, M, XL)
Fantastic boards, easy to wash, dry and oil. Don’t put in dishwasher as the wood may split. Hand wash and dry it right away and stand it on its side to dry.
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Reviewed in the United States on May 23, 2026

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