Product Introduction
This comprehensive FD-1600 mud pump parts lineup covers all critical wear components, fasteners, sealing elements, and structural assemblies for routine maintenance, full overhauls, and emergency field repairs. Every part is manufactured under strict quality control protocols, with OEM parts matching original factory blueprints and aftermarket parts engineered to equal performance standards—eliminating fitment errors, reducing installation labor, and avoiding costly rework. Each component is labeled with unique part numbers for easy identification, cross-referencing, and inventory management, making it simple to source exact replacements for the FD-1600 triplex mud pump.
Functional Specifications
- Fluid End Performance: Valve assemblies, cylinder heads, and liners maintain consistent mud flow and pressure, preventing pressure drops and leakage that disrupt drilling operations
- Sealing Integrity: Single/double lip oil seals, O-rings, and gaskets create zero-leak barriers for lubrication systems and fluid chambers, blocking contamination and extending internal component life
- Mechanical Stability: Piston rods, retainer plates, and guide assemblies absorb high radial and axial loads, reducing vibration and minimizing wear on moving parts
- Filtration & Lubrication: Filter elements and oil pump components keep lubricants clean and properly circulated, protecting critical bearings and rotating shafts from premature failure
- Structural Fastening: Heavy-duty retainer bolts and piston nuts deliver consistent clamping force, resisting loosening under high-frequency pump vibration
Structural Design Features
- Forged alloy steel construction for load-bearing parts (cylinder heads, piston rods) with a tensile strength of 115,000 PSI for maximum durability
- High-grade nitrile rubber and polyurethane seals for exceptional oil/mud resistance and long service life in harsh drilling environments
- Precision-ground contact surfaces for valve guides and liners, ensuring tight clearances and optimal fluid sealing
- Modular, drop-in design for quick field installation, cutting repair time by up to 40% compared to custom-fitted generic parts
- API-compliant sizing and threading for full compatibility with the FD-1600 pump’s fluid end and power end assemblies
Applicable Operating Conditions
These FD-1600 mud pump parts are rated for heavy-duty, continuous-duty drilling operations across all oilfield scenarios: onshore land rigs, offshore drilling platforms, directional drilling projects, and high-pressure well servicing. Compatible with all standard drilling fluids including water-based mud, oil-based mud, and synthetic drilling fluids, they perform reliably in extreme temperatures, high-sediment environments, and 24/7 continuous operation. All components meet global drilling industry safety and performance standards, making them suitable for both inland and offshore drilling projects worldwide.
Maintenance & Care Recommendations
- Scheduled Inspections: Inspect valve assemblies, seals, and liners every 400 operating hours to detect early wear, cracks, or deformation
- Filter Replacement: Replace filter elements every 800 hours to keep lubrication systems clean and prevent abrasive particle damage
- Wear Component Replacement: Swap pistons, liners, and valve seats every 1,800 hours to avoid catastrophic fluid end failure
- Torque Checks: Re-torque retainer bolts and piston nuts to OEM specifications after installation and every 1,000 hours to maintain clamping integrity
- Storage Protocols: Store unused parts in a dry, dust-free environment; coat metal components with anti-corrosion lubricant to prevent rust during long-term storage
- We supply the following spare parts:
| SPARE PARTS FOR MUD TRIPLEX PUMP NATIONAL FD-1600_OEM/AFTERMARKET | |||
| ITEM | P/N | DESCRIPTION | UNIT |
| 1 | MK-6397-0603-00 | RETAINER PLATE FOR TRIPLEX PUMP 1600 | EA |
| 2 | MK-6397-0575-00U | PPER VALVE GUIIDE FOR TRIPLEX PUMP 1600 | EA |
| 3 | MK-6316-0039-00 | VALVE COVER FOR TRIPLEX PUMP 1600 | EA |
| 4 | MK-7501-0051-00 | RETAINER BOLT FOR TRIPLEX PUMP 1600 | EA |
| 5 | MK-6316-0092-00 | SEAL VALVE POT COVER FOR TRIPLEX PUMP 1600 | EA |
| 6 | AH36001-05.19A | PISTON ROD FOR TRIPLEX PUMP 1600 | EA |
| 7 | MK-6316-0362-00 | CYLINDER HEAD FOR TRIPLEX PUMP 1600 | EA |
| 8 | 0-7502-0103-00 | GASKET_INSPECTION DOOR | EA |
| 9 | 0-7602-2131-47 | SEAL_SINGLE LIP OIL | EA |
| 10 | 0-7602-2132-76 | SEAL_DOUBLE LIP OIL | EA |
| 11 | 0-7602-2131-18 | SEAL_OIL | EA |
| 12 | 0-7602-1071-13 | ELEMEN FILTER | EA |
| 13 | 1551703 | ROD_PISTON | EA |
| 14 | 0-7602-1600-25 | 0-RING_(DISC MANIFOLD) | EA |
| 15 | 0-7602-1600-40 | O-RING_(STRAINER CAP) | EA |
| 16 | 0-7602-1600-44 | O-RING_(LINER LOCK) | EA |
| 17 | 5499550 | LINER_MISSION 5-1/2″ | EA |
| 18 | 12180337 | PISTON_MISSION 5-1/2″ | EA |
| 19 | G-7-V1 | API 7 FULL OPEN VALVE ASSY | EA |
| 20 | 55413397 | SPRING_MISSION VALVE | EA |
| 21 | 6308241 | NUT_PISTONS | EA |
| 22 | 15180227 | RUBBERS_PAIR 5-1/2″ | EA |
| 23 | 7815926 | PUMP_2S B&S OIL | EA |
| 24 | 0-6316-1002-01 | FLUID END ASSEMBLY | EA |
| 25 | 0-6316-1002-01 | RING ALIGNMENT | EA |
| 26 | 0-6316-0373-00 | SEAL_LINER & WEAR PLATE | EA |
| 27 | G-7-S1 | API 7 FULL OPEN VALVE SEAT | EA |
| 28 | MK-AH36001-05A.04 | LOWER VALVE GUIDE RETAINER FOR TRIPLEX PUMP 1600 | EA |
| 29 | MK-AH36001-05A.06.00 | CYLINDER HEAD PLUG FOR TRIPLEX PUMP 1600 | EA |
| 30 | MK-AH36001-05A.05 | LOWER VALVE GUIDE WITH BUSHING FOR TRIPLEX PUMP 1600 | EA |
| 31 | MK-AH36001-05A.07 | ALIGNMENT RING FOR TRIPLEX PUMP 1600 | EA |
| 32 | MK-6316-0373-00 | SEAL WEAR PLATE, LINER FOR TRIPLEX PUMP 1600 | EA |
| 33 | MK-6316-0369-00 | SEAL CYLINDER HEAD PLUG FOR TRIPLEX PUMP 1600 | EA |
Field Repair Case Studies for FD-1600 Mud Pump
Case 1: Worn Valve Assembly Causing Pressure Loss
A Permian Basin onshore rig experienced a sudden 30% drop in mud pressure mid-drilling, traced to worn API 7 full-open valve assemblies (Item 19) and seats (Item 27). Technicians replaced the faulty valve kits with FD-1600-specific components, re-aligned the valve guides, and restored full pump pressure in 2 hours, avoiding a 3-day rig shutdown. Root cause: abrasive sand in drilling fluid accelerated valve face wear.
Case 2: Liner Seal Leakage Leading to Fluid Loss
An offshore drilling platform reported persistent mud leakage from the FD-1600 pump’s liner housing, caused by degraded liner wear plate seals (Item 26). Replacement seals were installed, with the liner surface cleaned and seated properly, eliminating leakage entirely. The repair prevented environmental compliance issues and extended liner service life by 1,200 operating hours.
Case 3: Piston Nut Failure Halting Pump Operation
A directional drilling project in the North Sea suffered a seized piston due to loose piston nuts (Item 21) that failed under vibration. Crews replaced the damaged nuts with heavy-duty FD-1600-specific units, re-torqued to OEM specs, and resumed drilling within 90 minutes. Root cause: inadequate initial torque and lack of routine fastener checks.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible only with the NATIONAL FD-1600 triplex mud pump? | Yes, every component is precision-engineered and tested exclusively for the NATIONAL FD-1600 model, ensuring perfect fitment and performance; they are not designed for other triplex mud pump models. |
| What is the difference between OEM and aftermarket FD-1600 parts here? | OEM parts match the original factory specifications and materials exactly, while aftermarket parts are built to equal API 7K standards with equivalent durability and performance, offering a cost-effective reliable alternative. |
| Can these parts be used for both routine maintenance and emergency repairs? | Absolutely. This parts list includes routine wear items (filters, seals) and critical major components (fluid end assemblies, cylinder heads) for scheduled maintenance and urgent field breakdown fixes. |
Purchase Guidance
Stock up on these NATIONAL FD-1600 triplex mud pump spare parts to prepare for routine maintenance, planned overhauls, and unexpected field repairs. Submit your detailed parts inquiry with the specific item numbers, part numbers, and quantities you need, and we will provide transparent pricing, full component specifications, and supply support tailored to your drilling operation’s requirements. Secure high-quality, compatible FD-1600 parts to maintain rig uptime, comply with industry standards, and keep your drilling projects on track without disruption.
