Product Description
Revitalize your Welch DirecTorr pump (8905 A, New Style) with the Precision Plus Major Repair Kit (Product Number: 8905AMRK). This comprehensive kit includes all the essential components needed to restore your pump's performance to its prime. Precision Plus, your trusted source for vacuum pump parts, ensures a precise fit and reliable functionality for seamless integration with Welch pumps. Count on us for high-quality repair kits that contribute to the longevity and efficiency of your vacuum system. Opt for Precision Plus and keep your Welch pump operating at its best.
General product classifications
| Part Number Cross-Reference | 23W-8905N-V |
| Compatible Brands | Welch |
| Family | DirecTorr |
| Compatible Pump Models | 8905A |
| Category | Repair Kits |
| Subcategory | Major Kit |
| Country of origin | US |
| Manual page | WELCH-108 |
| Part Number | Description | Quantity | Qty in stock |
|---|---|---|---|
| 612128A | O-ring, 64.77 x 2.62 mm - Viton, Part# 612128A | 2 | 54 |
| 612123A | Rubber Foot, Push In, Welch, DirecTorr, Part# 612123A | 4 | 674 |
| 612119A | Valve Spring, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 612119A | 2 | 49 |
| 612118A | Gas Ballast Valve, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 612118A | 2 | 9 |
| 611178A | Orifice, Brass, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 611178A | 1 | 37 |
| 611128A | Backer Valve, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 611128A | 1 | 17 |
| 611123A | Intake Valve, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 611123A | 1 | 29 |
| 612178A | Vane, Intake - GX, Fisher Scientific, Welch, Part# 612178A | 2 | 12 |
| 612179A | Vane, Exhaust - GX, Fisher Scientific, Welch, Part# 612179A | 2 | 23 |
| 412694 | Spider Coupling, Buna, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 412694 | 1 | 4 |
| 412988 | Shaft Seal, 5/8", Welch Maxima, DirecTorr, M2C, M4C, Part# 412988 | 2 | 9 |
| 413175 | Washer Gasket, Nylon, Fisher Scientific, Welch, Part# 413175 | 1 | 13 |
| 612139A | Anti - Suckback Valve, Fisher Scientific, Welch, Maxima, DirecTorr, Part# 612139A | 1 | 13 |
| 612149B | Case Gasket, Fisher Scientific, Maxima, DirecTorr, M2C, M4C, Part# 612149B | 1 | 5 |
| 612155A | O-ring, 21.95 x 1.78 mm - Viton, Part# 612155A | 1 | 66 |
| 612157A | O-ring, 3.68 x 1.78 mm - Viton, Part# 612157A | 2 | 89 |
| 612158A | O-ring, 9.19 x 2.62 mm - Viton, Part# 612158A | 1 | 12 |
| 612159A | O-ring, 18.72 x 2.62 mm - Viton, Part# 612159A | 1 | 70 |
| 612170A | Insertion Tool, Nylon, Welch, DirecTorr, Part# 612170A | 1 | 9 |
| 612172A | Tool, Aluminium, Welch, DirecTorr, Part# 612172A | 1 | 9 |
| 612231 | O-ring, Shaped ring - Viton, Part# 612231 | 1 | 9 |
| 619282A | O-ring, 7.65 x 1.78 mm - Viton, Part# 619282A | 1 | 22 |
| 619479A | Drip Pad, Felt, Welch, DirecTorr, Part# 619479A | 1 | 17 |
