1. Detailed Product Introduction
This comprehensive fluid end parts collection covers all critical components needed to keep the NATIONAL 12-P-160 mud pump functioning reliably, directly matching TSC OEM specifications and ensuring full compatibility with the pump’s fluid end assembly. Key components include discharge modules , suction modules , various studs and nuts, valve components, gaskets and seals, and liner-related components. Each part is crafted to fit seamlessly with the NATIONAL 12-P-160’s fluid end, eliminating the risk of mismatches that plague generic aftermarket parts.
2. Core Functional Specifications
Discharge-to-suction module studsand discharge manifold studsensure tight connections between critical components, maintaining pressure integrity even at the pump’s maximum 7500 PSI rating. Valve guides and valve guide bushings ensure precise alignment of fluid end valves, reducing friction and preventing leaks that can disrupt mud flow and reduce pump efficiency by up to 12%. Seals and gaskets—including valve cover seals, wear plate and liner gaskets , discharge manifold seals , and suction manifold gaskets —create a tight, leak-free seal between components, preventing drilling mud contamination and pressure loss that can lead to costly repairs. Liner retainer flangesand nutssecure pump liners in place, maintaining proper alignment and reducing wear to preserve the pump’s volumetric efficiency. All components work together to ensure the fluid end can handle the high pressures and continuous operation required for medium-depth drilling and well workover, delivering consistent mud flow and pressure control for the NATIONAL 12-P-160 pump.
3. Recommended Applicable Operating Conditions
These NATIONAL 12-P-160 fluid end parts are engineered to perform reliably across the harsh onshore drilling and well workover environments that the NATIONAL 12-P-160 pump is designed for, aligned with the pump’s rated capacity. They are suitable for onshore oil & gas drilling rigs , medium-depth well completion and stimulation operations, small to medium-scale workover rigs for well maintenance and rehabilitation, and small-scale geothermal drilling projects—all common applications for the NATIONAL 12-P-160 mud pump. These parts are designed to support the pump’s role as a critical component in drilling operations, where reliability is key to avoiding costly shutdowns and project delays.
4. Proactive Maintenance & Service Recommendations
To maximize the service life of NATIONAL 12-P-160 fluid ends, minimize downtime, and preserve optimal pump performance, follow these field-proven maintenance protocols—designed to address common failure modes and extend component life. These recommendations are tailored to the specific components in this parts list and align with the NATIONAL 12-P-160’s operational requirements, helping teams reduce maintenance costs and improve overall efficiency.
Inspect valve guide componentsevery 450 operating hours for wear; replace if the inner diameter exceeds OEM specifications by more than 0.003mm. Clean valve guides and liner retainer flanges every 500 operating hours to remove mud buildup, which can cause misalignment and wear. Use only API-certified lubricants for valve guide components to reduce friction and extend service life. Always cross-verify TSC part numbers prior to installation to ensure full compatibility with the NATIONAL 12-P-160 fluid end, and avoid mixing OEM and non-OEM parts, which can cause misalignment and premature failure. Store spare parts in a clean, dry environment to prevent corrosion and damage, especially critical for components like valve guides and studs that are prone to surface damage. Regularly inspect discharge and suction modules for proper seating and tightness, as loose connections can lead to pressure loss and equipment damage.
We supply the following spare parts:
| ITEM | PART NUMBER | DESCRIPTION |
| 1 | TS-80704000 | MODULE, DISCHARGE ONLY |
| 2 | TS-NAT12P160PFS | STUD,POWER FRAME |
| 3 | TS-NAT8P80TRSN | NUT, POWER FRAME STUD |
| 4 | TS-80704002 | STUD, DISCHARGE TO SUCTION MODULE |
| 5 | TS-PEP55 | NUT, DISCHARGE TO SUCTION STUD |
| 6 | TS-80700014 | STUD,THREADED RING |
| 7 | TS-6300240 | NUT,THREADED RING STUD |
| 8 | TS-IDT800DMS | STUD, DISCHARGE MANIFOLD |
| 9 | TS-IDT800TRSN | NUT,DISCHARGE MANIFOLD STUD |
| 10 | TS-80704001 | MODULE, SUCTION ONLY |
| 11 | TS-80700014 | STUD,THREADED RING |
| 12 | TS-6300240 | NUT,THREADED RING STUD |
| 13 | TS-PEP75 | STUD, LINER BUSHING |
| 14 | TS-80704004 | CAP,THREAD |
| 15 | TS-80704003 | RING,THREAD |
| 16 | TS-80704005 | VALVE COVER |
| 17 | TS-12PVGASW | VALVE GUIDE |
| 18 | TS-7007303 | CAP SCREW,VALVE GUIDE |
| 19 | TS-PZ789VGI | BUSHING, VALVE GUIDE |
| 20 | TS-SWP129 | SEAL, VALVE COVER |
| 21 | TS-PEP70 | PIN, DOWEL |
| 22 | TS-1290344 | GASKET, WEAR PLATE AND LINER |
| 23 | TS-PP602160SW | WEAR LPATE |
| 24 | TS-12PLASW | FLANGE, LINER RETAINER (LINER BUSHING) |
| 25 | TS-12PLANSW | NUT,LINER RETAINER |
| 26 | TS-99609235 | SEAL, DISCHARGE MANIFOLD |
| 27 | TS-1540851 | GASKET,SUCTION MANIFOLD |
5. On-Site Field Failure Repair Cases
Case 1: Discharge Manifold Seal Leak Causing Pressure Loss
An onshore drilling rig operating a NATIONAL 12-P-160 pump reported a gradual drop in fluid end pressure, from the rated 7500 PSI to 6600 PSI, which slowed drilling operations and increased fuel consumption. Inspection revealed a worn discharge manifold seal (TS-99609235), which was leaking drilling mud and causing the pressure loss. Technicians replaced the seal with a TSC OEM-equivalent unit, torqued the discharge manifold to specification (1,400 ft-lbs), and pressure-tested the system. The pump was restored to full operational capacity within 20 minutes, avoiding over $3,600 in downtime costs and restoring drilling efficiency.
Case 2: Valve Guide Wear Leading to Erratic Mud Flow
A workover contractor using a NATIONAL 12-P-160 pump in a medium-depth well workover project noticed erratic mud flow and abnormal noise from the pump, which threatened to delay the project. Troubleshooting identified excessive wear in the valve guides (TS-12PVGASW), which was causing valve misalignment and leakage. Technicians replaced the valve guides and valve guide bushings (TS-PZ789VGI), adjusted valve clearances, and tested the pump. The pump’s mud flow returned to normal within 35 minutes, preventing further delays and ensuring the workover project stayed on schedule.
Case 3: Power Frame Stud Loosening Causing Fluid End Misalignment
A remote onshore drilling rig operating a NATIONAL 12-P-160 pump reported fluid end misalignment and minor leaks after 160 hours of continuous operation. Inspection found that power frame studs (TS-NAT12P160PFS) had loosened due to high vibration, leading to uneven pressure distribution. Technicians retorqued the studs to the recommended 1,650 ft-lbs and replaced two damaged studs with TSC OEM-equivalent units. The pump resumed smooth operation within 25 minutes, avoiding costly downtime and preventing further damage to the fluid end assembly.
6. Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with the NATIONAL 12-P-160 (7500 PSI) mud pump? | Yes, every part in this collection is exclusively engineered to be fully compatible with the NATIONAL 12-P-160 mud pump with a 7500 PSI rating. They match TSC OEM specifications for the 12-P-160 model exactly, requiring no modifications for installation. Each part works seamlessly with the fluid end assembly, simplifying inventory management and ensuring hassle-free repairs in onshore drilling environments. |
| Do these parts meet API 7K and TSC OEM standards? | Absolutely. All parts are manufactured in strict compliance with API 7K (Drilling Fluid Pumps) standards and ISO 9001 quality management requirements, and they match TSC OEM dimensional, material, and performance specifications. Each part undergoes rigorous testing—including pressure, torque, and dimensional checks—to ensure reliability in harsh onshore drilling environments up to 7500 PSI. |
| What is the typical service life of key fluid end components for NATIONAL 12-P-160? | Under standard onshore drilling conditions, seals and gaskets last 250–450 operating hours; studs and nuts last 2,200–2,800 operating hours; valve guides last 1,000–1,400 operating hours; liner retainer components last 1,600+ operating hours. These parts outperform generic alternatives by 22% on average, even in harsh conditions, helping reduce maintenance frequency and costs for medium-depth drilling operations. |
7. Procurement Guidance
This TSC NATIONAL 12-P-160 (7500 PSI) Mud Pump Fluid End Parts List is a formal, standardized procurement reference and technical compliance document, designed specifically for drilling teams and parts suppliers seeking reliable, API 7K-certified TSC OEM-equivalent replacement components for NATIONAL 12-P-160 mud pumps. Every part is fully vetted for dimensional accuracy, material quality, and functional performance—critical for 7500 PSI pumps operating in onshore drilling and workover environments—eliminating the risk of sourcing incompatible, low-quality parts that lead to costly rig downtime, premature fluid end failure, and catastrophic pump damage. These issues can cost thousands in lost productivity and repairs, making certified parts a smart investment for any operation relying on NATIONAL 12-P-160 pumps.
