Product Description
Welch 1397 Major Repair Kit with Iron Vanes
Complete Vacuum Pump Repair Kit
This major repair kit with iron vanes is designed to fully rebuild Welch 1397 and 1397PI vacuum pumps. Replacing vanes, seals, gaskets, valve components, and internal wear parts helps restore vacuum performance, reduce oil contamination, and extend pump life.
This high-quality replacement kit includes critical wear components required for a full service and overhaul. Designed to meet or exceed OEM specifications, this kit helps ensure reliable performance and long service life.
Kit Includes
Valve & Control Components
| Part Number | Description | Qty |
|---|---|---|
| 412260 | Lever Valve Kit | 1 |
| 1401FLS | Radial Lip Seal Assembly | 1 |
| 410055 | Spacer | 1 |
| 410696 | Spring Holder | 1 |
| 410715 | V-Belt | 2 |
| 410992 | Pressure Relief Valve | 1 |
| 412161 | Pressure Release Valve | 1 |
| 412256 | Valve Spring | 1 |
| 412259 | Valve Spring | 1 |
| 411508 | Valve Gasket | 1 |
| 4401200 | Steel Ball | 1 |
Washers & Seals
| Part Number | Description | Qty |
|---|---|---|
| 411056 | Aluminum Washer | 4 |
| 411137 | Aluminum Washer | 2 |
| 411266 | Tension Washer | 2 |
| 411267 | Rubber Washer | 2 |
Vanes & Springs
| Part Number | Description | Qty |
|---|---|---|
| 411477 | 1st Stage Iron Vane | 2 |
| 411487 | 2nd Stage Iron Vane | 2 |
| 411304 | Vane Spring | 2 |
| 411488 | Vane Spring | 4 |
| 411489 | Spring Holder | 2 |
Keys & Sleeves
| Part Number | Description | Qty |
|---|---|---|
| 411490 | Woodruff Key | 2 |
| 411516 | Woodruff Key | 1 |
| 412257 | Hardened Sleeve | 1 |
| 412258 | Hardened Sleeve | 1 |
Gaskets
| Part Number | Description | Qty |
|---|---|---|
| 411495 | Intake Cover Gasket | 1 |
| 411496 | Case Gasket | 1 |
O-Rings
| Part Number | Description | Qty |
|---|---|---|
| 411507 | O-Ring | 1 |
| 618475 | O-Ring | 1 |
| 618712 | O-Ring | 2 |
Recommended Add-Ons
- Vacuum Pump Oil: Use VPL M100 Mineral Vacuum Pump Oil, 5 Liter or VPS Replacement Oil M100 ISO 100, 1 Liter.
- Disposable Exhaust Filter: Add the Disposable Exhaust Filter for Welch 1397.
- Flushing Fluid: Clean internal components before rebuild using FF-005 Vacuum Pump Flushing Fluid.
- Mechanical Seal Option: If you need the shaft-seal version, see 411401F-01 Shaft Seal Kit or 310037 Seal, Shaft, 411401F-01.
- 1397 Replacement Parts: Browse the Welch 1397 Replacement Parts page for additional service items.
Compatible Pumps
- Welch 1397
- Welch 1397PI
For best results, replace vacuum pump oil and filtration during rebuild. Proper maintenance helps maintain vacuum performance, reduce oil mist, and extend service life on Welch 1397 and 1397PI vacuum pumps.
