I 8P80 MUD PUMP SPECIFICATIONS：
Maximum Input Horsepower: 800HP(597KW)
Stroke Length : 8-1/2” (216mm)
Rated pump speed, spm : 160
Maximum liner bore, inches (mm) : 6 1/4” (158.8)
Suction connection: 8” ASA-150 lb. R.J. flang
Discharge connection, cross: 4” API-5000 lb. R.J. flang
Gear ratio: 2.463:1
II 8P80 MUD PUMP EXPENDABLES PARTS
6 1/2× 8 1/2 8-P-80
| 8P80 | PART NO. | PART NO. | Gaskets | PART NO. |
| Liners & Liner Packing | Valve Cover Gasket | LA-61-0255 | ||
| SIZES | LINER | LINER PACKING | Cylinder Head Gasket | N/A |
| 4” | LA-0256-40 | LAG-0272 | ||
| 4½” | LA-0256-44 | LAG-0274 | ||
| 5” | LA-0256-50 | LAG-0276 | ||
| 5½” | LA-0256-54 | LAG-0278 | ||
| 6” | LA-0256-60 | LAG-0280 | ||
| 6¼” | LA-0256-62 | LAG-0268 | ||
| 6½” | LA-0256-64 | LAG-0268 | ||
SERIES | LA-4 WEB | LA-FULL OPEN | LA-G2 | LA-ROUGHNECK |
| VALVE (Urethane Insert) | LA-U5B-EH | LA-6FO-V1 | LA-1560995 | LA-RN6-V1 |
| VALVE (Rubber Insert) | LA-5B-EH | N/A | N/A | N/A |
| VALVE SEAT | LA-6ADD-B4 | LA-6FO-S4 | LA-1561450 | LA-RN6-S4 |
| VALVE SPRING | LA-5710-115 | LA-5710-115 | LA-1560701 | LA-5710-115L |
| VALVE INSERT (Red Thunder) | LA-UDD-6ABHT | N/A | N/A | N/A |
| VALVE INSERT (Urethane) | LA-UDD-6B | LA-6FO-SI | LA-1560587 | LA-RN6-I |
| VALVE INSERT (Rubber) | LA-DD-6B | N/A | N/A | N/A |
| VALVE SEAT PULLER HEAD | LA-1700-6 | LA-1700-6FO | LA-1700-6G2 | LA-1700-6FO |
| Piston Size | Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | LA-RT-400 | LA-I40HK14/15 | LA-I40HK | LA-RB-400 | LA-LL-400 |
| 4½” | LA-RT-440 | LA-I44HK14/15 | LA-I44HK | LA-RB-440 | LA-LL-440 |
| 5” | LA-RT-500 | LA-I50HB14/15 | LA-I50HB | LA-RB-500 | LA-LL-500 |
| 5½” | LA-RT-540 | LA-I54HB14/15 | LA-I54HB | LA-RB-540 | LA-LL-540 |
| 6” | LA-RT-600 | LA-I60HB14/15 | LA-I60HB | LA-RB-600 | LA-LL-600 |
| 6½” | LA-RT-640 | LA-I64HB14/15 | LA-I64HB | LA-RB-640 | LA-LL-640 |
| *1/4 Size are available upon request1/4 | |||||
| RODS | |
| PISTON ROD | LA-0259-A |
| SUB ROD | LA-0259-B |
| EXTENSION ROD | LA-16-0259 |
| ROD CLAMP | LA-24-0259 |
| PISTON ROD NUT | LA-7403364 |
NATIONAL 8P80
FLUID END MODULE AND ACCESSORIES
| Item | Part No. | Description | Qty per Pump |
| 1 | LA-1291280 | Discharge Module, Studded (Included Items 2 – 10) | 3 |
| 2 | LA-1291281 | Discharge Module, Only | 3 |
| 3 | LA-6300180 | Nut – Frame | 24 |
| 4 | LA-2408026 | Stud – Frame | 24 |
| 5 | LA-6300120 | Nut – Liner Bushing | 18 |
| 6 | LA-2408025 | Stud – Liner Bushing | 18 |
| 7 | LA-6300241 | Nut – Suction to Discharge Module | 18 |
| 8 | LA-2408034 | Stud – Suction to Discharge Module | 18 |
| 9 | LA-6300220 | Nut – Threaded Ring | 72 |
| 10 | LA-2408019 | Stud – Threaded Ring1 | 72 |
| 11 | LA-1290338 | Suction Module, Studded (Included Items 9, 10, 14) | 3 |
| 12 | LA-1290339 | Suction Module, Only | 3 |
| 13 | LA-1291165 | Bushing – Liner | 3 |
| 14 | LA-1290174 | Seal Retainer | 6 |
| 15 | LA-1290307 | Valve Cover | 6 |
| 16 | LA-1290178 | Screw – Wedge Adjusting | 6 |
| 17 | LA-6300160 | Nut – Wedge Adjusting | 6 |
| 18 | LA-1290315 | Washer – Wedge Adjusting | 6 |
| 19 | LA-1290308 | Threaded Ring | 6 |
| 20 | LA-1290376 | Wedge Assembly(included items 21-22) | 6 |
| 21 | LA-1290179 | Wedge, Set | 6 |
| 22 | LA-1290181 | Spring, Wedge Retaining | 6 |
| 23 | LA-1540126 | Gasket – Valve Cover | 6 |
| 24 | LA-1292140 | Holder – Valve Guide | 6 |
| 25 | LA-1292141 | Insert – Valve Guide | 6 |
| 26 | LA-6511416 | Pin, 7/8” × 2″ Dowell | 6 |
| 27 | LA-1290357 | 1Plate – Wear | 3 |
| 28 | LA-1290342 | Connector – Discharge | 2 |
| 29 | LA-7000305-11 | Screw, ½” × 1½” Hex Head | 16 |
| 30 | LA-7619050 | Washer, ½” Lock | 16 |
| 31 | LA-1290343 | Adapter – Discharge Connector | 2 |
| 32 | LA-2410031-348 | Packing, Rectangular | 2 |
| 33 | LA-2410031-427 | Packing, Rectangular | 4 |
| 34 | LA-1291166 | Clamp – Liner | 3 |
| 35 | LA-1590051 | Seal – Suction Manifold | 3 |
| 36 | LA-1291286 | Spacer – Discharge, Studded(included intems 37-39) | 2 |
| 37 | LA-1291287 | Spacer-Discharge | 2 |
| 38 | LA-2402560 | Stud – Discharge Spacer | 16 |
| 39 | LA-6300200 | Nut – Discharge Spacer | 16 |
| 40 | LA-7006607 | Capscrew | 16 |
| 41 | LA-1290344 | Seal – Module, Wear Plate | 6 |
| 42 | LA-1290345 | Seal-Discharge Spacer | 2 |
| 43 | LA-6908033 | Ring, Oval Joint | 2 |
| 1Offered in Plain Carbon or Stainless Steel1 | |||
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