Product Description
Welch DuoSeal 1397 Belt-Driven Vacuum Pump
Welch part number: 1397B-01
Factory configuration: 115 V / 60 Hz / 1-phase
Overview
The Welch DuoSeal 1397 is a belt-driven oil-sealed rotary-vane vacuum pump built for dependable laboratory, industrial and process service. Its low-speed belt drive, serviceable construction and established DuoSeal pumping mechanism support long operating life when the correct oil and maintenance schedule are used.
| Pumping speed | Ultimate pressure | Pump design | Oil capacity |
|---|---|---|---|
| 17.7 cfm / 500 L/min | 1 × 10⁻⁴ Torr | Two-stage | 1.2 L |
Configuration
| Field | This product |
|---|---|
| Welch part number | 1397B-01 |
| Model | DuoSeal 1397 |
| Electrical / factory configuration | 115 V / 60 Hz / 1-phase |
| Purchase status | Call for pricing and availability |
Features
- Low-speed belt drive supports smooth operation and long service life.
- Oil-sealed rotary-vane mechanism provides dependable vacuum performance.
- Serviceable construction supports routine seal, vane and gasket replacement.
- Factory motor and inlet configuration is identified by the exact Welch part number.
Technical Specifications
| Specification | Value |
|---|---|
| Pump design | Two-stage |
| Free-air displacement | 17.7 cfm / 500 L/min |
| Ultimate pressure | 1 × 10⁻⁴ Torr |
| Pump speed | 400 rpm |
| Oil capacity | 1.2 L |
| Motor rating | 1 hp |
| Inlet connection | 1.75-20 threaded; 1-5/8 in tubing |
| Approximate weight | 213 lb |
| Approximate dimensions (L × W × H) | 26 × 13.7 × 18.8 in |
Published performance is nominal and may vary with motor frequency, condition, lubricant, process gas and measurement method. Confirm the exact part number before ordering.
Available Configurations
| Welch part number | Electrical / factory configuration | Availability |
|---|---|---|
| 1397B-01 | 115 V / 60 Hz / 1-phase | This configuration |
| 1397M-01 | 230/460 V / 60 Hz / 3-phase | Call for pricing |
Maintenance, Oil & Filters
| Maintenance item | Recommended product or resource | Part number / notes |
|---|---|---|
| Vacuum pump oil | Welch DuoSeal / Gold Oil or verified VPS equivalent | Verify viscosity, process and material compatibility before substituting oil. |
| Repair kit | 1397 major repair kit | 1397PI |
| Exhaust filtration | Disposable exhaust filter for 1397 | VPSF-1397; confirm fit and connection before ordering |
| Resource Center | Welch Vacuum Pump Resource Center | VPS-owned cross references, parts and maintenance guidance. |
Applications
Laboratory vacuum, filtration, distillation, vacuum ovens, degassing, drying and general industrial vacuum.
Resources
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