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Two-Stage Rugged Belt Drive Pump
DuoSeal 1402

Cat. No #1402

Legendary longevity and exceptional durability.
Low pump rpm, cool running, longer service life.
Large oil reservoir dilutes contaminants.
High oil feed port draws cleanest oil.
Suitable for toughest applications.
Low maintenance.
Available in 115V/60Hz and 230V/60Hz.

Free air displacement @60Hz:	5.6 cfm (160 L/min)
Ultimate pressure:	1x10-4 Torr (1.3x10-4 mbar) mbar

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Description

Rugged oil seal pumps for a wide variety of vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pull drive enables low rpm operation by reducing friction, oil temperature, and oil degradation. Its large oil reservoir minimizes contamination effects and extends maintenance intervals. Single stage pumps should not operate continuously above 50 torr.

Two stage pumps should not operate continuously above 10 torr.

Specifications

1400

1405

1402

1376

1397

1374

Free Air Displacement @ 60 Hz

cfm (L/min)

160

300

500

Ultimate Pressure

torr

1x10⁻⁴

Motor Speed

RPM

@60Hz

580

525

Motor Power

HP (kW) at 60 Hz

1/3 (0.25)

1/2 (0.37)

1 (0.75)

Oil Capacity

0.59

2.1

2.4

1.2

Inlet Connection Thread

3/4-2020

1-20

1.75-20

Tubing Needed

I.D. in. (mm)

7/16 (11)

13/16 (21)

1 5/8 (41)

Weight

lbs (kg)

70 (31.8)

132 (60)

180 (81.8)

213 (96.8)

Dimensions

LxWxH

in (mm)

18.3x11.5x12.4 (465x292x328)

20x12x15 (510x305x391)

20x14.1x15.4 (510x359x390)

115V Order Number

1400B-01

1405B-01

1402B-01

1376B-01

1397B-01

1374B-01

Downloads

Belt_Drive_DuoSeal_1374_1376_1397_1400_1402_1405.pdf

Duoseal 1400

About Welch Vacuum

Welch is a recognized provider of vacuum pumps, systems, and fittings for industrial, life sciences, and laboratory applications. We design, manufacture, and deliver products meeting the strictest requirements for mission-critical applications, and provide a comprehensive offering of products and great engineering capabilities to fit our customers’ needs.

As a reliable and trusted partner for OEMs, we stand up to the challenge of supplying best-in-class products and solutions on time to manufacturers of equipment in the life sciences, healthcare, and industrial segments.

Am Vogelherd 20, 98693 Ilmenau, Germany | +49 3677 604 1000

Learn more about WELCH

Two-Stage Rugged Belt Drive Pump DuoSeal 1402