The Welch 1402 vacuum pump is a two-stage belt-drive rotary vane pump with a free air displacement of 5.6 cfm and a ultimate total pressure of 1 x 10-4 Torr. DuoSeal 1402 pumps are designed to be rugged and durable.
It is a small mechanical vacuum pump with excellent vapor handling capability. DuoSeal Welch 1402 pumps have a high contamination tolerance due to their large oil reservoirs which dilute contaminants. A low pump RPM reduces friction and provides a long service life for these pumps. It is reliable and commonly used in vacuum processes, degassing, freeze drying, vacuum furnace applications.
REBUILT OR REMANUFACTURED Welch 1400 VACUUM PUMPS:
All rebuild prices include disassembly, inspection & cleaning. Replacement of seals, gasket, springs, o-rings & valves. Other parts replaced as required upon approval for an extra charge. Pumps are then tested & painted.
Specifications
Welch 1402 VACUUM PUMP SPECIFICATIONS:
| Vacuum Pump Model | | 1402 |
| Nominal Displacement | cfm | 5.6 |
| Nominal Displacement | l/m | 160 |
| Stage | | 2 |
| Type | Belt-Drive | |
| Motor HP | hp | 1/2 |
| Oil Capacity | ltr | 2.1 |
| Inlet | 1″ NPT | |
| Outlet | 1″ NPT | |
| Weight | lbs | 132 |
| Purchase Price (Rebuilt) | $ | $1,550 |
| Rebuild Price | $ | $750 |
Features
Welch 1402 ROTARY VANE PUMP FEATURES:
- Dual Stage Pump
- Belt Drive
- Excellent Vapor Handling Capability
- High contamination tolerance
- Rugged design, long service life
Applications
Welch 1402 PUMP APPLICATIONS:
- Vacuum Furnace Evacuation
- Vacuum Manifolds
- Vacuum Oven
- Backing Turbomolecular pumps
- Rotary Evaporator
- High Boiling Point Evaporations
- Refrigeration system evacuation
- Freeze Drying
- Research and Development
- Vacuum Processes
- Vacuum Distillation
- Glove Boxes
- General Laboratory
Dimensions
Welch 1402 DUOSEAL VACUUM PUMP Dimensions:
Compare
WELCH DUOSEAL ROTARY VANE VACUUM PUMPS:
| Vacuum Pump Model | 1400 | 1405 | 1402 | |
| Nominal Displacement | cfm | .9 | 3.2 | 5.6 |
| Nominal Displacement | l/m | 25 | 91 | 160 |
| Stage | 2 | 2 | 2 | |
| Motor HP | hp | 1/3 | 1/2 | 1/2 |
| Oil Capacity | l | .59 | 2.1 | 2.1 |
| Weight | lbs | 58 | 112 | 122 |
| Purchase Price (rebuilt) | $ | $1,100 | $1,200 | $1,550 |
| Rebuild Price | $ | $650 | $725 | $750 |
Pumping Speed Curve
WELCH DUOSEAL 1402 PUMPING SPEED CURVES:
Manual
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