Premium NATIONAL 7-P-50 Mud pump parts list
| Valve Cover Gasket | Cylinder Head Gasket |
|
| 0788-P | N/A |
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| SIZE | LINER | LINER GASKET |
| 4” | 0257-40-P | 0272-P |
| 41/2” | 0257-44-P | 0274-P |
| 5″ | 0257-50-P | 0276-P |
| 51/2” | 0257-54-P | 0278-P |
| 6” | 0257-60-P | 0280-P |
| 6 1/4″ | 0257-62-P | 0268-P |
| 6 1/2” | N/A | N/A |
| 63/4″ | N/A | N/A |
| 7″ | N/A | N/A |
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| STYLE | WEB | FULL OPEN |
| VALVB (Urethane Insert) | U5B-05-P | 5FO-V1-P |
| VALVE (BlueFlame® HighTemp) | HT-U5B-05-P | HT-5FO-V1-P |
| VALVE SEAT | 5DD-B3-P | 5FO-S3-P |
| VALVE SPRING | 5710-111-P | 5710-30-P |
| VALVE INSERT (Urethane) | UDD-5B-P | 5FO-SI-P |
| VALA/E INSER丁（BlueFlame® HighTemp) | HT-UDD-5B-P | HT-5FO-SI-P |
| VALVE SEAT PULLER HEAD | 1700-5-P | 5-PH-P |
| Piston | Bonded | Urethane | Rubber | Replaceable Rubber |
| Size | Long Life | BlueFlame® | Bonded | Assembly | Kits |
| 4″ | LL-400-P | HT-400-P | RB-400-P | I40HK14/15-P | I40HK-P |
| 4W | LL-440-P | HT-440-P | RB-440-P | I44HK14/15-P | I44HK-P |
| 5″ | LL-500-P | HT-500-P | RB-500-P | I50HB14/15-P | I50HB-P |
| 51,2“ | LL-540-P | HT-540-P | RB-540-P | I54HB14/15-P | I54HB-P |
| 6” | LL-600-P | HT-600-P | RB-600-P | I60HB14/15-P | I60HB-P |
| 6V2” | LL-640-P | HT-640-P | RB-640-P | I64HL14/15-P | I64HL-P |
| 7” | LL-700-P | HT-700-P | RB-700-P | I70HL14/15-P | I70HL-P |
% Size are available upon request
| ROD ASSEMBLY |
| PISTON ROD | SUB ROD | PONY | ROD |
| w/nut | ROD | CLAMP |
| PART NUMBER | 0257-A-P | 0257-B-P | 16-0257-P | 24-0257-P |
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