1. Product Introduction
This NATIONAL 9-P-100 fluid end parts collection covers all critical components needed to keep the pump running reliably, from complete pre-assembled modules to individual replacement parts. Key components include the complete fluid end module assembly (TS-FEMNAT9PCA, 3 units per pump), studded fluid end discharge modules (TS-1293240, 3 units per pump), discharge modules only (TS-1293241, 3 units per pump), studded fluid end suction modules (TS-1290338, 3 units per pump), and suction modules only (TS-1290339, 3 units per pump). Supporting components include power frame studs and nuts, liner bushing studs and nuts, threaded ring studs and nuts, liner bushings (TS-1293165), valve cover caps (TS-1290307), locking wedge assemblies (TS-G-1290376), wear plates (TS-1290357), discharge connectors (TS-1290342), and various seals and gaskets.
2. Functional Specifications
The fluid end is essential to the NATIONAL 9-P-100’s performance, and each component plays a critical role. The complete fluid end module (TS-FEMNAT9PCA) integrates all key parts into one ready-to-install unit, reducing full overhauls by up to 50%. Discharge and suction modules control mud intake and discharge to maintain consistent pressure and flow, while power frame studs (TS-2408030, 24 units per pump) and nuts (TS-6300200, 24 units per pump) secure the fluid end to the power frame with a recommended torque of 1,200–1,500 ft-lbs (to resist vibration from 75–85 pump strokes per minute). Valve guide bushings (TS-1292141, 6 units per pump) ensure precise valve alignment, reducing friction and preventing leaks that cut efficiency by up to 10%. Seals and gaskets create leak-free connections, protecting against mud contamination and pressure loss, while discharge connectors (TS-1290342, 2 units per pump) maintain pressure integrity at 4000 PSI.
3. Applicable Operating Conditions
These parts are engineered for the harsh environments where the NATIONAL 9-P-100 operates, including onshore oil and gas drilling rigs (well depths up to 6,500 feet), shallow to medium-depth well completion, small to medium-scale workover rigs, and small-scale geothermal drilling. They perform reliably under extreme stress: operating pressures up to 4000 PSI (276 Bar), ambient temperatures from -15°F to 160°F, continuous vibration (75–85 strokes per minute), exposure to high-solids, slightly corrosive drilling mud, and 24/7 uninterrupted operation. They are ideal for full overhauls, routine maintenance, and emergency repairs, integrating seamlessly with standard NATIONAL 9-P-100 maintenance protocols.
4. Maintenance & Service Recommendations
To maximize fluid end service life and minimize downtime, follow these field-proven protocols: Inspect all seals and gaskets (TS-1290344, TS-1540126, TS-2410031348, TS-2410031427, TS-1590051) every 180 operating hours for wear or leaks—replace immediately to avoid 10% efficiency loss. Check studs and nuts every 140 operating hours, retorquing to 1,200–1,500 ft-lbs (power frame studs) and replacing damaged parts. Inspect valve guide bushings (TS-1292141) every 350 operating hours—replace if inner diameter exceeds OEM specs by 0.003mm. Clean liner bushings (TS-1293165) and wear plates (TS-1290357) every 400 operating hours to remove mud buildup. Use API-certified lubricants, verify part numbers before installation, and store spares in a clean, dry environment. For full overhauls, use the pre-assembled TS-FEMNAT9PCA module to reduce errors and save time.
We supply the following spare parts:
| ITEM | PART NUMBER | DESCRIPTION |
| TS-FEMNAT9PCA | FLUID END MODULE COMPLETE ASSEMBLY | |
| 1 | TS-1293240 | MODULE, STUDDED FLUID END DISCHARGE(INCLUDES ITEM 2-10) |
| 2 | TS-1293241 | DISCHARGE MODULE ONLY |
| 3 | TS-6300200 | NUT, POWER FRAME STUD |
| 4 | TS-2408030 | STUD, POWER FRAME |
| 5 | TS-6300160 | NUT, LINER BUSHING STUD |
| 6 | TS-2408018 | STUD, LINER BUSHING |
| 7 | TS-6300241 | NUT, DISCHARGE TO SUCTION MODULE STUD |
| 8 | TS-2408034 | STUD, DISCHARGE MODULE TO SUCTION MODULE |
| 9 | TS-6300220 | NUT, THREADED RING STUD |
| 10 | TS-2408019 | STUD, THREADED RING |
| 11 | TS-1290338 | MODULE, STUDDED FLUID END SUCTION(INCLUDES ITEM 12-14) |
| 12 | TS-1290339 | SUCTION MODULE ONLY |
| 13 | TS-6300220 | NUT, THREADED RING STUD |
| 14 | TS-2408019 | STUD, THREADED RING |
| 15 | TS-1293165 | BUSHING, LINER |
| 16 | TS-1290174 | RETAINER, SEAL |
| 17 | TS-1290307 | CAP, VALVE COVER (THREADED) |
| 18 | TS-1290178 | SCREW, ADJUSTING WEDGE |
| 19 | TS-6300160 | NUT, WEDGE ADJUSTING SCREW |
| 20 | TS-1290315 | WASHER, WEDGE ADJUSTING SCREW |
| 21 | TS-1290308 | RING, THREADED |
| 22 | TS-G-1290376 | LOCKING WEDGE ASSEMBLY |
| 23 | TS-1540126 | GASKET, VALVE COVER |
| 24 | TS-1292140 | RETAINER, VALVE GUIDE BUSHING |
| 25 | TS-1292141 | BUSHING, VALVE GUIDE |
| 26 | TS-6511416 | PIN, DOWELL |
| 27 | TS-1290357 | PLATE, WEAR |
| 28 | TS-1290342 | CONNECTOR, DISCHARGE |
| 29 | TS-700030511 | CAPSCREW, DISCHARGE CONNECTOR |
| 30 | TS-7619050 | WASHER, LOCK 1/2″ |
| 31 | TS-1290343 | ADAPTER, DISCHARGE CONNECTOR |
| 32 | TS-2410031348 | SEAL, DISCHARGE CONNECTOR TO DISCHARGE ADAPTER |
| 33 | TS-2410031427 | SEAL, DISCHARGE CONNECTOR & DISCHARGE ADAPTER |
| 34 | TS-1293166 | ASSEMBLY, LINER CLAMP (INCLUDES ITEM 32,33,34,35,36,37) |
| 35 | TS-7 00044811 | CAPSCREW, LINER CLAMP |
| 36 | TS-6309120 | NUT, 3/4″ LOCK TYPE |
| 37 | TS-1290169 | PIN, CONNECTOR |
| 38 | TS-1290168 | CONNECTOR, LINER CLAMP |
| 39 | TS-2402560 | STUD, TOP TAPER LOCK |
| 40 | TS-6300200 | NUT, STUD (BLIND RING AND WELD NECK FLANGES) |
| 41 | TS-1290344 | SEAL,MODULE & WEAR PLATE |
| 42 | TS-1590051 | SEAL,SUCTION MANIFOLD |
5. On-Site Failure Repair Cases
Case 1: Seal Leak Causing Pressure Loss
An onshore drilling rig using a NATIONAL 9-P-100 reported pressure dropping from 4000 PSI to 3600 PSI, slowing drilling and increasing mud use. Inspection found a worn module & wear plate seal (TS-1290344). Technicians replaced the seal with our OEM-equivalent part, torqued the wear plate to 1,000 ft-lbs, and pressure-tested the system. The pump was back to full capacity in 18 minutes, avoiding over $3,000 in downtime costs.
Case 2: Valve Guide Bushing Wear Causing Erratic Flow
A workover contractor noticed erratic mud flow, loud pump noise, and reduced pressure from their NATIONAL 9-P-100. Troubleshooting revealed excessive wear in valve guide bushings (TS-1292141), causing valve misalignment. Replacing the bushings and retainers (TS-1292140) restored normal flow and pressure in 25 minutes, keeping the workover project on schedule.
Case 3: Loose Studs Causing Fluid End Misalignment
A remote onshore rig reported fluid end misalignment, minor leaks, and abnormal vibration after 130 hours of continuous operation. Power frame studs (TS-2408030) had loosened due to vibration. Technicians retorqued the studs to 1,400 ft-lbs and replaced two damaged ones with our parts. The pump resumed smooth operation in 22 minutes, preventing further damage.
6. Frequently Asked Questions (FAQ)
| Question | Answer |
| Will these parts fit my NATIONAL 9-P-100 mud pump? | Yes, every part is exclusively engineered for the NATIONAL 9-P-100 and matches TSC OEM specifications exactly. No modifications are needed—they are drop-in replacements that fit seamlessly with your pump’s fluid end assembly. |
| Why should I use the complete fluid end module (TS-FEMNAT9PCA)? | The TS-FEMNAT9PCA is pre-assembled and factory-tested, eliminating on-site assembly errors and cutting full fluid end overhaul time by up to 50%. It includes all critical components in one unit, ensuring consistent performance and ideal for emergency repairs or routine maintenance. |
| Do these parts meet industry quality standards? | All parts comply with API 7K (Drilling Fluid Pumps) and ISO 9001 standards, matching TSC OEM dimensional, material, and performance specs. Each part undergoes pressure testing (1.5x 4000 PSI), torque testing, and dimensional inspection to ensure reliability in harsh drilling environments. |
7. Procurement Guidance
This NATIONAL 9-P-100 Fluid End Parts List is a formal procurement and technical reference, designed to help drilling teams source reliable, API 7K-certified TSC OEM-equivalent components. Every part is vetted for dimensional accuracy, material quality, and performance—critical for 4000 PSI pumps operating in harsh onshore environments. Using these parts eliminates the risk of incompatible, low-quality components that cause costly downtime, premature fluid end failure, and catastrophic pump damage.
