SOUTHWEST MUD PUMP PARTS LIST
8476-9A_NATIONAL_HP_12-P-160_6000PSI
| FLUID END TYPE | MODEL OF PUMP | SIZE OF PUMP | ||
| SOUTHWEST 6000 P.S.I. | NATIONAL HP 12-P-160 | 7-1/2” X 12” | ||
| ITEM NO. | PART NO. | DESCRIPTION | QTY. REQ，D |
| 8476-9A | FLUID END ASSEMBLY: (CONSISTS OF ITEMS: 3,4，16，17，18，19,20,21，22,23,24,25,26,27,28,29,32,33,34) | 3 | |
| 1 | 1376YXX | LINER REFER TO GUIDE FOR ORDERING CHART FOR TYPE (G); (Y); AND FOR BORE SIZE (XX) | 3 |
| 2 | 2930-XX | LINER SEAL (REFER TO GUIDE TO ORDERING CHART FOR TYPE AND SIZE(XX)) | 3 |
| 3 | 8476-3 | WEARPLATE | 3 |
| 4 | 2988 | WEARPLATE AND MODULE SEAL (also available in urethane – part# 2988U) | 6 |
| 5 | XX-BYY | PISTON (REFER TO GUIDE FOR ORDERING CHART FOR SIZE (XX) AND FOR TYPE (YY) | 3 |
| 6 | 568-225 | PISTON O-RING | 3 |
| 7 | 1286-32 | PISTON ROD (WITH ELASTIC STOP NUT) | 3 |
| 8 | API-4ESN | PISTON ROD ELASTIC STOP NUT | 3 |
| 9 | 1286-1 | SUB ROD | 3 |
| 10 | 1286CWY | ROD CLAMP (CONSIST OF 10A，10B，10C) (FOR CLAMP ONLY，USE 1286C) | 6 |
| 10A | 1200H30 | HOSE (1/2” X 30” WITH 1/2” MALE X 3/8” MALE CONNECTIONS) | 3 |
| 10B | 1286CWYFP14 | PIPE (3/8” X 14” GALVANIZED AND THREADED ON ONE END) | 3 |
| 10C | 4020-29 | ROD CLAMP BOLT(7/8-9 grade 8 bolt with lock nut and washer) | 12 |
| 11 | 1200G86 | PONY ROD | 3 |
| 12 | SEE PAGE | VALVE | 6 |
| 13 | SEE PAGE | VALVE INSERT (IF required) | 6 |
| 14 | SEE PAGE | VALVE SPRING | 6 |
| 15 | SEE PAGE | VALVE SEAT | 6 |
| SWTM1700 | HYDRAULIC SEAT PULLER KIT COMPLETE (refer to tools section of catalog for details) | 1 | |
| 16 | 4476 | THREADED FLANGE | 6 |
| 17 | 4597 | SCREW GLAND | 6 |
| 18 | 4676-9A | PLUG (COMPLETE WITH VALVE GUIDE; BUSHING; AND SCREWS) INCLUDES ITEMS 21，22 & 23 | 6 |
| 19 | P115 | HP VALVE COVER PLUG NITRILE SEAL (also available in urethane – part# P115U) | 6 |
| 20 | 4788-25R | VALVE GUIDE (complete with bushing #4700-i) | 6 |
| 21 | 4700I | VALVE GUIDE BUSHING (also available in urethane – part# 4700IU) | 6 |
| 22 | 4018-18 | VALVE GUIDE SCREW | 12 |
| 23 | 4015-54 | VALVE COVER STUD (with sw part# HHN1500-61 1/2-6 heavy hex nut) | 72 |
| 24 | 4015-95 | POWER END STUD (WITH SW PART# HHN1375-6 1 3/8-6 HEAVY HEX NUT) | 30 |
| FLUID END TYPE | MODEL OF PUMP | SIZE OF PUMP |
| SOUTHWEST 6000 P.S.I. | NATIONAL HP 12-P-160 | 7-1/2” X 12” |
| ITEM NO. | PART NO. | DESCRIPTION | QTY. REQ，D |
| 25 | 4017-65 | LINER RETAINER FERRY HEAD CAP SCREW | 18 |
| 26 | 6476 | LINER RETAINER FLANGE | 3 |
| 27 | 6576 | LINER RETAINER NUT | 3 |
| 28 | 4019-61 | SUCTION MODULE STUD (WITH SW PART# HHN1750-8 1 3/4-8 HEAVY HEX NUT) | 18 |
| 29 | 4018-19 | SUCTION MANIFOLD CAP SCREW (with lockwasher) | 24 |
| 30 | 8576-50 | SUCTION MANIFOLD (front or side inlet) | 1 |
| 31 | AJO419R | SUCTION MANIFOLD GASKET | 3 |
| 32 | 8476-8S | SUCTION MODULE (studded only) | 3 |
| 33 | 8476-7D | DISCHARGE MODULE (studded only) | 3 |
| 34 | 8488-5 | DOWEL PIN | 6 |
| 35 | 4018-18 | DISCHARGE CONNECTOR CAP SCREW (with lock washer) | 24 |
| 36 | 4018-39 | DISCHARGE SPACER FLANGE SOCKET HEAD CAP SCREW | 16 |
| 37 | 8376-7 | DISCHARGE CONNECTOR | 2 |
| 38 | 8376-8 | DISCHARGE ADAPTER | 2 |
| 39 | 8376-9 | BACK-UP RING | 2 |
| 40 | 8376-10 | DISCHARGE SPACER FLANGE | 2 |
| 41 | 2976-3 | DISCHARGE SPACER FLANGE SEAL | 2 |
| 42 | 2976-1 | DISCHARGE CONNECTOR /ADAPTER PACKING | 2 |
| 43 | 2976-2 | DISCHARGE CONNECTOR /ADAPTER PACKING | 4 |
| 44 | BX155 | RING GASKET | 2 |
| 45 | 4019-58 | DISCHARGE SPACER FLANGE STUD (with sw part# HHN1125-71 1/8-7HEAVY hex nut) | 16 |
| 46 | 9070012 | PONY ROD SEAL | |
| 47 | 80491292 | BAFFLE | |
| ** POLYURETHANE SEAL AVAILABLE ** |
SOUTHWEST 6000 PSI HP 12-P-160 GUIDE TO ORDERING
PISTONS LINERS LINER SEALS
| SIZE | FAIL-SAFE | DUAL-DURO® | GRAYLOY® | ZIRCONIA | RUBBER | URETHANE | |
| 4″ | 76BFS | 76BDD | 1376G06 | 2930-06 | 2930-06U | ||
| 4 1/2″ | 78BFS | 78BDD | 1376G08 | 1376ZIR08 | 2930-08 | 2930-08U | |
| 4 3/4″ | 79BFS | 79BDD | 1376G09 | 2930-09 | 2930-09U | ||
| 5″ | 81BFS | 81BDD | 1376G1 | 1376ZIR1 | 2930-1 | 2930-1U | |
| 5 1/4″ | 82BFS | 82BDD | 1376G2 | 2930-2 | 2930-2U | ||
| 5 1/2″ | 83BFS | 83BDD | 1376G3 | 1376ZIR3 | 2930-3 | 2930-3U | |
| 5 3/4″ | 84BFS | 84BDD | 1376G4 | 2930-4 | 2930-4U | ||
| 6″ | 85BFS | 85BDD | 1376G5 | 1376ZIR5 | 2930-5 | 2930-5U | |
| 6 1/4″ | 86BFS | 86BDD | 1376G6 | 2930-6 | 2930-6U | ||
| 6 1/2″ | 87BFS | 87BDD | 1376G7 | 1376ZIR7 | 2930-7 | 2930-7U |
VALVES & SEATS ( NATIONAL HP 12-P-160 )
| TYPE | VALVE | INSERT | SPRING | STAINLESS SPRING | SEAT | PULLER HEAD | PULLER HEAD STYLE |
| SOUTHWEST (Full Open) | 773-1B | N/A | SW5710-110L | N/A | 873-1 | SWTM3750 | SPLIT JAW |
| FULL OPEN-ROUGHNECK (Cast N Place Insert) | SWND-6V2 | N/A | SW5710-115 | N/A | SWND-6S4 | SWND-6PH SWTM27SXN | PANCAKE SPLIT JAW |
| FULL OPEN-ROUGHNECK (High Temp) | SWND-6V2HC | NA | SW5710-115 | N/A | SWND-6S4 | SWND-6PH SWTM27SXN | PANCAKE SPLIT JAW |
| FULL OPEN-ROUGHNECK (w/Replaceable Urethane Insert) | SWND-6V1 | SWND-6I | SW5710-115 | N/A | SWND-6S4 | SWND-6PH SWTM27SXN | PANCAKE SPLIT JAW |
| 3 WEB DOUBLE ANGLE O-RING | SWR0500119 | SWR0515845 | SWR0513744 | SWR0514790 | SWR0512436 | SWTM3-7D | |
| 3 WEB (High Temp) | SWR0520586 | SWR0520585 | SWR0513744 | SWR0514790 | SWR0512436 | SWTM3-7D | 3 J HOOK |
| 3 WEB STANDARD PLATE | SWR0505038 | SWR0504890 | SWR0513744 | SWR0515576 | SWR0512436 | SWTM3-7D | |
| 4 WEB | SWU5B-EH | SWUDD-6AB | SW5710-115 | N/A | SW6ADD-B4 | SWTM4-6 | 4 J HOOK |
| 4 WEB (High Temp) | SWU5B-EHHT | SWUDD-6ABHT | SW5710-115 | N/A | SW6ADD-B4 | SWTM4-6 | |
TORQUE SPECIFICATIONS FOR 8476-9A SOUTHWEST FLUID END ASSEMBLY FOR NATIONAL HP 12-P-160 6000 P.S.I.
TORQUE TYPE (EXPRESSED IN FOOT-POUNDS)
| PART NUMBER | DESCRIPTION | COPPERCOTE | MOLY GREASE | DRY (NOT RECOMMENDED) | |
| API-4 ESN | PISTON ROD NUT | NO MORE FORCE THAN ONE MAN ON 3′ WRENCH/CHEATER COMBINATION | |||
| 4020-29 | ROD CLAMP BOLT | 150 MAXIMUM | |||
| 4018-18 | VALVE GUIDE SCREW | 53 | 80 | 107 | |
| 4015-54 | VALVE COVER STUD | 1208 | 1752 | 2417 | |
| 4015-95 | POWER END STUD | 877 | 1272 | 1754 | |
| 4019-61 | SUCTION MODULE STUD | 2275 | 3299 | 4550 | |
| 4018-19 | SUCTION MANIFOLD CAP SCREW | 215 | 322 | 430 | |
| 4018-39 | DISCHARGE SPACER FLANGE SOCKET HEAD CAP SCREW | 1586 | 2379 | 3173 | |
| 4019-58 | DISCHARGE SPACER FLANGE STUD | 536 | 778 | 1073 | |