Welch 1399 DuoSeal Unmounted Pump
Welch 1399 DUOSEAL Vacuum Pump – 5.6 CFM (Unmounted)
The Welch 1399 DUOSEAL is a compact yet powerful belt-drive rotary vane vacuum pump, ideal for laboratory and light industrial applications requiring reliable deep vacuum.
Welch DuoSeal 1399 is an unmounted pump and a component to a complete belt driven vacuum pump. The Welch DuoSeal Unmounted Pump 1399 requires a base, motor and belt to generate vacuum. This product can only be used as a drop-in replacement for the pump component of a complete vacuum pump.
Key Features
- 5.6 CFM (160 L/min) pumping speed
- Ultimate vacuum down to 1 × 10⁻⁴ Torr
- Large oil reservoir for extended life and cooler operation
- Durable DUOSEAL rotary vane technology
- Easy maintenance and service access
Ideal Applications
- Laboratory vacuum systems
- Vacuum ovens and drying
- Schlenk lines and glove boxes
- Small vacuum distillation setups
- Light industrial processes
This unmounted version (Welch 1399) is perfect for custom vacuum systems or as a replacement pump head.
Need technical advice or compatibility confirmation? Email support@chemtechsci.com or call (484) 424-9415.
|
Pumping Speed |
1.2 CFM (35 l/min) |
|
Max. Vacuum |
0.030 torr |
|
Oil Capacity |
0.5 qt(0.47 l) |
|
Tubing Needed |
7/16(11) |
|
Exhaust / Intake threads |
3/4-20 |
|
Pump RPM |
750 |
Welch 1399 DUOSEAL Vacuum Pump – 5.6 CFM (Unmounted)
The Welch 1399 DUOSEAL is a compact yet powerful belt-drive rotary vane vacuum pump, ideal for laboratory and light industrial applications requiring reliable deep vacuum.
Welch DuoSeal 1399 is an unmounted pump and a component to a complete belt driven vacuum pump. The Welch DuoSeal Unmounted Pump 1399 requires a base, motor and belt to generate vacuum. This product can only be used as a drop-in replacement for the pump component of a complete vacuum pump.
Key Features
- 5.6 CFM (160 L/min) pumping speed
- Ultimate vacuum down to 1 × 10⁻⁴ Torr
- Large oil reservoir for extended life and cooler operation
- Durable DUOSEAL rotary vane technology
- Easy maintenance and service access
Ideal Applications
- Laboratory vacuum systems
- Vacuum ovens and drying
- Schlenk lines and glove boxes
- Small vacuum distillation setups
- Light industrial processes
This unmounted version (Welch 1399) is perfect for custom vacuum systems or as a replacement pump head.
Need technical advice or compatibility confirmation? Email support@chemtechsci.com or call (484) 424-9415.
|
Pumping Speed |
1.2 CFM (35 l/min) |
|
Max. Vacuum |
0.030 torr |
|
Oil Capacity |
0.5 qt(0.47 l) |
|
Tubing Needed |
7/16(11) |
|
Exhaust / Intake threads |
3/4-20 |
|
Pump RPM |
750 |


