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The Welch web page has information for the 1402 and other pumps. If the requested voltage is not in stock then we will purchase a new motor and split the cost with you. They run on various vacuum pump oils. We also offer repair service.
| Specifications | 1374 | 1376 | 1380 | 1397 |
|---|---|---|---|---|
| Free Air Displacement, cfm (l/min) | 23(650) | 10.6(300) | 5.6(160) | 17.7(500) |
| Ultimate Pressure (Torr) | 1 x 10-4 | 1.5 x 10-2 | 1 x 10-4 | |
| Gas Ballast | Yes | |||
| Pump RPM | 510 | 525 | 535 | 400 |
| Motor Horsepower | 1-1/2 | 1 | 1/2 | 1 |
| Oil Capacity, qt. (liters) | 1.25(1.2) | 2.5(2.4) | 3.7(3.5) | 1.25(1.2) |
| Tubing Needed, I.D. in. | 1-5/8 | 13/16 | 1-5/8 | |
| Intake, Nipple Thread | 1.75-20 | 1-20 | 1.75-20 | |
| Exhaust, Thread Type | ||||
| Weight, lbs(kg) | 220(100) | 156(71) | 116(53) | 205(93) |
| Specifications | 1400 | 1402 | 1405 |
|---|---|---|---|
| Free Air Displacement, cfm (l/min) | 0.9(25) | 5.6(160) | 3.2(91) |
| Ultimate Pressure (Torr) | 1 x 10-4 | ||
| Gas Ballast | Yes | ||
| Pump RPM | 580 | 525 | |
| Motor Horsepower | 1/3 | 1/2 | |
| Oil Capacity, qt. (liters) | 0.62(0.59) | 2.25(2.1) | |
| Tubing Needed, I.D. in. | 7/16 | 13/16 | 7/16 |
| Intake, Nipple Thread | 3/4-20 | 1-20 | |
| Exhaust, Thread Type | |||
| Weight, lbs(kg) | 58(26) | 112(51) | |