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One-Stage Rugged Belt Driven Pump
DuoSeal 1399

Cat. No #1399

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:	1.2 cfm (35 L/min)
Ultimate Pressure	1.5x10-2 Torr (1.9x10-2 mbar)

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Description

Product Details

High contamination tolerance
Ultimate vacuum <0.015 Torr
Low RPM for long service life

Suggested Applications

Vacuum Distillation
Vacuum Oven
Vacuum Manifolds
Glove Boxes

DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm reduces friction and wear while minimizing reservoir temperature to lessen chemical reactivity. Pump can be ordered with an optional exhaust filter to control oil mist.

Specifications

Product Family Specifications

1399

1380

Free Air Displacement @ 60 Hz

cfm (L/min)

Ultimate Pressure

torr

1.5x10⁻²

Motor Speed

RPM

@60Hz

Motor Power

HP (kW) at 60 Hz

1/3 (0.25)

Oil Capacity

0.47

Inlet Connection Thread

3/4-20

1-20

Tubing Needed

I.D. in. (mm)

7/16 (11)

Weight

lbs (kg)

62 (28.2)

Dimensions

LxWxH

in (mm)

115V Order Number

1399B-01

1380B-01

Downloads

c25885-gd-welch-duoseal-family-flyer-v2-web

Welch DUOSEAL Brochure

DuoSeal 1399 Manual

Major Repair Kit for Welch 1399 Rotary Vane Pumps 1399K-04

Major Repair Kit for 1399 Pump 1399K-04

Learn More

Vacuum Hose - Red Rubber 331040

Learn More

Minor Repair Kit for 1399 Pump 1399K-03

Learn More

DuoSeal Vacuum Pump Oil

Learn More

Video Gallery

Watch the video to learn more about changing oil in Rotary Vane Vacuum Pump

Watch the video to learn more about Forced Oil Flush on Rotary Vane Pumps

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

One-Stage Rugged Belt Driven Pump DuoSeal 1399

Cat. No #1399

Description

Specifications

Product Family Specifications

Downloads

Welch DUOSEAL Brochure

DuoSeal 1399 Manual

Major Repair Kit for 1399 Pump 1399K-04

Vacuum Hose - Red Rubber 331040

Minor Repair Kit for 1399 Pump 1399K-03

DuoSeal Vacuum Pump Oil

Video Gallery

Watch the video to learn more about changing oil in Rotary Vane Vacuum Pump

Watch the video to learn more about Forced Oil Flush on Rotary Vane Pumps

One-Stage Rugged Belt Driven Pump
DuoSeal 1399