Product Description
Welch 1397 Major Repair Kit with Iron Vanes
Complete Vacuum Pump Repair Kit
This high-quality replacement kit includes all critical wear components required for a full service and overhaul. Designed to meet or exceed OEM specifications, this kit ensures reliable performance and extended pump life.
This major repair kit with iron vanes is designed to fully rebuild Welch 1397 and 1397PI vacuum pumps. Replacing vanes, seals, gaskets, and internal components restores vacuum performance, reduces oil contamination, and extends pump life.
Kit Includes
Valve & Control Components
- 412260 – Lever Valve Kit (Qty 1)
- 1401FLS – Radial Lip Seal Assembly (Qty 1)
- 410055 – Spacer (Qty 1)
- 410696 – Spring Holder (Qty 1)
- 410715 – V-Belt (Qty 2)
- 410992 – Pressure Relief Valve (Qty 1)
- 412161 – Pressure Release Valve (Qty 1)
- 412256 – Valve Spring (Qty 1)
- 412259 – Valve Spring (Qty 1)
- 411508 – Valve Gasket (Qty 1)
- 4401200 – Steel Ball (Qty 1)
Washers & Seals
- 411056 – Aluminum Washer (Qty 4)
- 411137 – Aluminum Washer (Qty 2)
- 411266 – Tension Washer (Qty 2)
- 411267 – Rubber Washer (Qty 2)
Vanes & Springs
- 411477 – 1st Stage Vane (Qty 2)
- 411487 – 2nd Stage Vane (Qty 2)
- 411304 – Vane Spring (Qty 2)
- 411488 – Vane Spring (Qty 4)
- 411489 – Spring Holder (Qty 2)
Keys & Sleeves
- 411490 – Woodruff Key (Qty 2)
- 411516 – Woodruff Key (Qty 1)
- 412257 – Hardened Sleeve (Qty 1)
- 412258 – Hardened Sleeve (Qty 1)
Gaskets
O-Rings
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.
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 pumps.
