Products
Vacuum Pumps
Vacuum Gauges and Controllers
Vacuum Pump Oils
Applications
Mass Spectrometry
Botanicals Processing
HVAC Pumps
Rotary Evaporator
Vacuum Concentrator
Vacuum Manifold
Freeze Dryer
Vacuum Oven
Vacuum Filtration
Vacuum Distillation
Aspiration (Cell Culture)
Glove Box
Gel Dryer
Vacuum Measurement & Control
Pick & Place
Vacuum Workhholding
DEGASSING / DESSICATOR
Gas Analysis
Vacuum Leak Detection: Methods, Tools & Tips
Service
Maintenance Kits
FAQ
About Us
News
Careers
History
Our Values
Downloads
Global Presence
Back to the product list

DuoSeal 1400W-01

Two-Stage Belt Drive Pump: Explosion Proof Motor

  • Explosion proof motor is rated for Class I, Groups C&D and Class II, Groups E, F &G. (cUL listed)
  • 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
  • Free air displacement @60Hz: 0.9 cfm (25 L/min)
  • Ultimate pressure: 1x10-4 Torr (1.3x10-4 mbar)

Welch’s explosion-proof pumps are specially designed to prevent internal and external explosions by enclosing the parts that could ignite the material being transported or found in the surrounding area. The key benefits of Welch’s pumps for hazardous environments include:

  • Explosion-Proof Reliability - Sealed design and robust construction mitigates the risk of sparks and explosion, providing secure operation and peace of mind in industrial settings.
  • Performance of a Regular Motor - Welch’s explosion-proof pumps deliver performance that is on par with pumps equipped with regular motors. Users don’t have to sacrifice efficiency to prioritize safety.
  • Safety in Hazardous Conditions - These pumps have been designed specifically with hazardous conditions in mind. Whether in applications where flammable vapors are unavoidable or in settings with stringent safety protocols, they offer a safety-certified solution.
  • Versatility - Welch’s explosion-proof pumps come in a range of technologies, models and sizes. You can count on the explosion-proof design and uncompromised performance across multiple pump types for a variety of industrial needs.
  • Legal Compliance - Our pumps are a legally sound solution for industrial applications that will help you ensure compliance with stringent legal regulations governing hazardous environments.

Discover Welch’s comprehensive range of explosion-proof pumps designed to meet the diverse needs of various applications, such as vacuum ovens, freeze dryers, and distillation. Our pumps are suitable for various industries that work with highly combustible materials, such as oil refining, petrochemical, utility, power generation, nuclear, environmental monitoring, and more.

Model Number

1399

1400

1380

1376

1397

1374

1405

1402

Weight

62

70

116

180

213

215

132

132

Ultimate Pressure

1.5x10⁻²

1x10⁻⁴

1.5x10⁻²

1x10⁻⁴

1x10⁻⁴

1x10⁻⁴

1x10⁻⁴

1x10⁻⁴

115V Order Number

1399B-01

1400B-01

1380B-01

1376B-01

1397B-01

1374B-01

1405B-01

1402B-01

Inlet Connection

3/4-20

3/4-2020

1-20

1-20

1.75-20

1.75-20

1-20

1-20

Motor Power, HP (kW) at 60 Hz

1/3 (0.25)

1/3 (0.25)

1/2 (0.37)

1 (0.75)

1 (0.75)

1.5 (1.12)

1/2 (0.37)

1/2 (0.37)

Motor Speed, RPM, @60Hz

750

580

535

525

400

510

525

525

Oil Capacity, L

0.47

0.59

3.5

2.4

1.2

1.2

2.1

2.1

Tubing Needed, I.D. in. (mm)

7/16 (11)

7/16 (11)

13/16 (21)

1 5/8 (41)

1 5/8 (41)

-

13/16 (21)

13/16 (21)

Dimensions, LxWxH, in (mm)

430x230x250

465x292x328

510x310x380

510x359x390

660x348x476

660x348x476

510x305x391

510x305x391

Free Air Displacement

1.2 (35)

0.9 (25)

5.6 (158)

10.6 (300)

17.7 (500)

23 (650)

3.2 (90)

5.6 (158)

REACH OUT TO US