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Major Overhaul Kit - Pfeiffer DUO 1.6 / DUO 3 PKE02070T
Used on Pfeiffer DUO1.6, DUO3
DUO 1.6 is a direct replacement for obsolete DUO 1.5
DUO 3 is a direct replacement for obsolete DUO 2.5
Both pumps are equipped with a high vacuum safety valve that closes the vacuum chamber tightly and vents the pump when the pump is at a standstill Suitable for both low and medium vacuum applications
For exact kit contents see bill of materials below
General product classifications
| Brand | Pfeiffer |
| Family | DUO |
| Pump models | DUO1.6 DUO3 |
| Category | Repair Kits |
| Subcategory | Overhaul Kits |
| Country of origin | US |
| Manual page | PFEIFFER-79 |
| PART NUMBER | DESCRIPTION | QUANTITY |
|---|---|---|
| 300201 | Gasket, Pfeiffer, DUO, UNO, Part# 300201 | 1 |
| 4070065 | O-ring, 5 x 1.5 mm - Viton, Part# 4070065 | 3 |
| 4070088 | O-ring, 6 x 2.2 mm - Viton, Part# 4070088 | 2 |
| 4070321 | O - ring, 18 x 5.0 mm - Viton, Part# 4070321 | 3 |
| 4070259 | O-ring, 15 x 2.5 mm - Viton, Part# 4070259 | 2 |
| 320473 | O-ring, 16 x 1.5 mm - Viton, Part# 320473 | 1 |
| 320175 | O-ring, 22 x 1.5 mm - Viton, Part# 320175 | 1 |
| 320480 | O-ring, 40 x 2.5mm - Viton, Part# 320480 | 1 |
| 194109 | Sight Glass Gasket, Pfeiffer, DUO, UNO, DUO1.6, DUO3, Part# 194109 | 1 |
| 320485 | O-ring, 42 x 2.5 - Viton, Part# 320485 | 1 |
| 320481 | O-ring, 122 x 2.5 mm - Viton, Part# 320481 | 1 |
| 4070125 | O-ring, 8 x 2.0 mm - Viton, Part# 4070125 | 4 |
| 4070166 | O-ring, 10 x 2.5mm - Viton, Part# 4070166 | 1 |
| 220170A | Leak Nozzle, Pfeiffer, UNO, DUO, Part# 220170A | 1 |
| 360075 | Half Coupling, Pfeiffer, DUO, UNO, Part# 360075 | 1 |
| 580042 | Valve Flap, Round, Pfeiffer, DUO, UNO, DUO1.6, DUO3, DUO2.5, Part# 580042 | 1 |
| 490036 | Pressure Spring, Pfeiffer, Part# 490036 | 4 |
| 580043 | Valve Flap, Long, Pfeiffer, DUO, UNO, Part# 580043 | 1 |
| 580044 | Piston, Hydraulic, Pfeiffer, DUO, DUO 125, DUO 255M (Index C), Part# 580044 | 1 |
| 300166 | Felt Ring Pfeiffer, Part# 300166 | 1 |
| 230063 | Pfeiffer Vane, GX, Part# 230063 | 4 |
| 380045 | Valve Stop, Stainless, Pfeiffer, UNO, DUO, UNO6, Part# 380045 | 1 |
| 310061 | Shaft Seal, Viton - Single Lip, Pfeiffer, DUO, UNO, Part# 310061 | 1 |
| 750093 | Tube Pole Cap, Black- Pfeiffer, DUO, UNO, Part# 750093 | 1 |
| 300202 | Sealing ring-Pfeiffer DUO, UNO, Part# 300202 | 1 |
| 550046 | Sight Glass, Pfeiffer, UNO, DUO, Part# 550046 | 1 |
| 570002 | Plate Valve Assembly, Pfeiffer, Part# 570002 | 1 |
| 490041 | Pressure Spring, Pfeiffer, DUO, UNO, DUO2.5, DUO2.5C, Part# 490041 | 1 |
| 25908119 | Plug, Oil Drain, RV pump, Edwards, Pfeiffer, Part# 25908119 | 1 |
| 490046 | Pressure Spring - Pfeiffer, DUO, UNO, Part# 490046 | 1 |
| 230077G | Vane - GX, Pfeiffer, UNO, DUO, Part# 230077G | 1 |
Used on Pfeiffer DUO1.6, DUO3
DUO 1.6 is a direct replacement for obsolete DUO 1.5
DUO 3 is a direct replacement for obsolete DUO 2.5
Both pumps are equipped with a high vacuum safety valve that closes the vacuum chamber tightly and vents the pump when the pump is at a standstill Suitable for both low and medium vacuum applications
For exact kit contents see bill of materials below
General product classifications
| Brand | Pfeiffer |
| Family | DUO |
| Pump models | DUO1.6 DUO3 |
| Category | Repair Kits |
| Subcategory | Overhaul Kits |
| Country of origin | US |
| Manual page | PFEIFFER-79 |
| PART NUMBER | DESCRIPTION | QUANTITY |
|---|---|---|
| 300201 | Gasket, Pfeiffer, DUO, UNO, Part# 300201 | 1 |
| 4070065 | O-ring, 5 x 1.5 mm - Viton, Part# 4070065 | 3 |
| 4070088 | O-ring, 6 x 2.2 mm - Viton, Part# 4070088 | 2 |
| 4070321 | O - ring, 18 x 5.0 mm - Viton, Part# 4070321 | 3 |
| 4070259 | O-ring, 15 x 2.5 mm - Viton, Part# 4070259 | 2 |
| 320473 | O-ring, 16 x 1.5 mm - Viton, Part# 320473 | 1 |
| 320175 | O-ring, 22 x 1.5 mm - Viton, Part# 320175 | 1 |
| 320480 | O-ring, 40 x 2.5mm - Viton, Part# 320480 | 1 |
| 194109 | Sight Glass Gasket, Pfeiffer, DUO, UNO, DUO1.6, DUO3, Part# 194109 | 1 |
| 320485 | O-ring, 42 x 2.5 - Viton, Part# 320485 | 1 |
| 320481 | O-ring, 122 x 2.5 mm - Viton, Part# 320481 | 1 |
| 4070125 | O-ring, 8 x 2.0 mm - Viton, Part# 4070125 | 4 |
| 4070166 | O-ring, 10 x 2.5mm - Viton, Part# 4070166 | 1 |
| 220170A | Leak Nozzle, Pfeiffer, UNO, DUO, Part# 220170A | 1 |
| 360075 | Half Coupling, Pfeiffer, DUO, UNO, Part# 360075 | 1 |
| 580042 | Valve Flap, Round, Pfeiffer, DUO, UNO, DUO1.6, DUO3, DUO2.5, Part# 580042 | 1 |
| 490036 | Pressure Spring, Pfeiffer, Part# 490036 | 4 |
| 580043 | Valve Flap, Long, Pfeiffer, DUO, UNO, Part# 580043 | 1 |
| 580044 | Piston, Hydraulic, Pfeiffer, DUO, DUO 125, DUO 255M (Index C), Part# 580044 | 1 |
| 300166 | Felt Ring Pfeiffer, Part# 300166 | 1 |
| 230063 | Pfeiffer Vane, GX, Part# 230063 | 4 |
| 380045 | Valve Stop, Stainless, Pfeiffer, UNO, DUO, UNO6, Part# 380045 | 1 |
| 310061 | Shaft Seal, Viton - Single Lip, Pfeiffer, DUO, UNO, Part# 310061 | 1 |
| 750093 | Tube Pole Cap, Black- Pfeiffer, DUO, UNO, Part# 750093 | 1 |
| 300202 | Sealing ring-Pfeiffer DUO, UNO, Part# 300202 | 1 |
| 550046 | Sight Glass, Pfeiffer, UNO, DUO, Part# 550046 | 1 |
| 570002 | Plate Valve Assembly, Pfeiffer, Part# 570002 | 1 |
| 490041 | Pressure Spring, Pfeiffer, DUO, UNO, DUO2.5, DUO2.5C, Part# 490041 | 1 |
| 25908119 | Plug, Oil Drain, RV pump, Edwards, Pfeiffer, Part# 25908119 | 1 |
| 490046 | Pressure Spring - Pfeiffer, DUO, UNO, Part# 490046 | 1 |
| 230077G | Vane - GX, Pfeiffer, UNO, DUO, Part# 230077G | 1 |