Full Parts Portfolio Introduction
This annual maintenance parts lineup covers all vital components for both the power end and fluid end of the LSNOI 3NB-1600 mud pump, including intermediate rods, single-lip oil seals, valve cover seals, general service seals, return springs, multi-size bimetallic V-liners, ceramic liners, matched piston assemblies, piston rods, high-precision lock nuts, sealing rings, wear plates, retaining plates, locking clips, bushes, piston rod clamps, complete valve assemblies, valve bodies, valve seats, valve rubbers, studded fluid end modules, spray pipes, flexible hoses, high-strength standard bolts, diaphragms, O-rings, rubber plates, relief valves, dedicated drive motors, and pressure gauges. Each part is fabricated from oilfield-rated alloy steel, high-pressure polymer sealing materials and corrosion-resistant metal, with CNC precision machining to guarantee perfect fit with original pump interfaces—no field modification, grinding or reworking required. This collection supports daily visual checks, routine upkeep, quarterly preventive service and full annual teardown and rebuild.
Functional Performance Specifications
Every part in this annual recommendation is engineered to endure harsh drilling site conditions, with verified performance metrics to ensure long-term field reliability:
- High-Pressure Stability: Fluid end seals and valve assemblies are rated for up to 35MPa continuous working pressure, resisting hydraulic shock and eliminating high-pressure mud leakage.
- Extended Wear Life: Bimetallic V-liners and ceramic liners deliver up to 4,000 service hours in high-abrasion mud conditions, reducing frequent replacement needs.
- Reliable Sealing Performance: All oil seals, O-rings and gaskets use oil-resistant, anti-aging rubber compounds, maintaining complete sealing under constant vibration and temperature shifts.
- Heavy-Duty Fastener Strength: All threaded fasteners meet 12.9-grade industrial standards, with tensile strength ≥1080MPa to resist loosening and breakage under long-term vibration.
- Direct OEM Interchange: All parts match original factory dimensions and mounting points, enabling quick, straightforward replacement and minimizing on-site repair downtime.
Applicable Field Operating Conditions
All parts in this annual list are engineered to perform reliably across the harshest global drilling environments, supporting year-round operation of the LSNOI 3NB-1600 mud pump:
- Onshore Drilling Operations: Land deep-well rigs, desert drilling pads, mountain and permafrost drilling sites, compatible with high-abrasion sand-laden mud and extreme ambient temperature swings.
- Continuous 24/7 Operation: Built for non-stop drilling schedules, withstanding long-duration full-load operation and repeated hydraulic shock.
- Mud Compatibility: Suitable for standard drilling mud and mildly corrosive drilling fluids, with excellent wear and chemical corrosion resistance.
- Full Pump Maintenance Coverage: Supports all power end and fluid end maintenance scenarios, covering routine care, preventive replacement and emergency fault repair.
Recommended Maintenance & Replacement Schedule
To maximize part service life and maintain consistent pump uptime over a full year, follow this field-proven maintenance schedule aligned with this parts list:
- Daily Visual Inspection: Check for mud or oil leaks, monitor discharge pressure, inspect spray pipes and hoses for damage, and verify fastener tightness.
- Quarterly Preventive Maintenance: Replace easily worn seals, sealing rings, O-rings and washers; inspect piston and liner wear; retorque all high-strength fasteners.
- Semi-Annual Service: Replace worn pistons, valve rubbers and wear plates; check piston rod and intermediate rod condition; replace cracked or hardened spray hoses.
- Annual Full Overhaul: Replace liners, complete valve assemblies, oil seals and all degraded fasteners; inspect fluid end module integrity; calibrate pressure gauges and replace damaged diaphragms.
- Spare Parts Storage Guidelines: Store parts in a dry, ventilated area; apply anti-rust coating to metal components; keep rubber seals away from direct sunlight and high heat to prevent premature hardening.
We supply the following spare parts:
| 107.214.00 Electrical Liner Washer (spray pump) | ||
| Item No. | Part No. | Description |
| 801 | 107.214.10.00 | Base |
| 802 | Motor YB112M-4 4KW | |
| 803 | 107.214.20.00 | Coupling |
| 804 | 107.214.01 | Cover |
| 805 | 107.186.00 | Centrifugal liner washer |
| 806 | Pressure gauge Y60 0〜1Mpa | |
| 807 | D3-4-67 | Rubber gasket 6×12 δ3 |
| 808 | 107.105.02 | Gauge seat |
| 809 | GB3289.10-82 | Tee RC1 |
| 810 | 107.11CP.20.01 | Outlet flange |
| 811 | F4-3.1-93 | Joint core 25/R1” |
| 812 | F4-11-93 | Nut 25 |
| 813 | HG4-761-74 | Rubber hose Φ 25-0.7x3m |
| 814 | F4-13-93 | Joint core |
| 815 | F11-1.2-93 | Nut M39x2 |
| 816 | F11-1.8-93 | Adapter 28/R1 |
| 817 | GB3289.26-82 | Inner joint R1 |
| 818 | 107.11CP.20.02 | Washer δ1.5 |
| 819 | 107.11CP.30.01 | Inlet flange |
| 820 | 107.04A.20.02 | Hose joint |
| 821 | GB3289.2-82 | Elbow RC1-1/2” |
| 822 | GB5782-86 | Bolt M12x55 |
| 823 | GB6170-86 | Nut M12 |
| 824 | GB93-87 | Washer12 |
| 825 | HG4-761-74 | Rubber hose Φ 38-0.7×1.5m |
| 826 | Hose clamp No.2 | |
| 827 | GB5782-86 | Bolt M 10×65 |
| 828 | GB97.1-85 | Washer 10 |
| 829 | GB93-87 | Washer 10 |
| 830 | GB6170-86 | Nut M10 |
| 831 | C3-11-92 | Gasket M10 |
| 832 | GB5781-86 | Bolt M10x20 |
| 833 | 107.214.02 | Gasket δ 0.35 |
| 834 | 107.214.03 | Gasket δ1.5 |
| 835 | 024.21.70.05 | Support Z 50x50x5, L=60 |
| 836 | C3-11-92 | Gasket M16 |
| 837 | GB93-87 | Washer 16 |
| 838 | GB5781-86 | Bolt M 16×35 |
Field Fault Repair Case Studies
Case 1: Worn Liner Causes Insufficient Discharge Pressure
A land deep-well drilling rig’s LSNOI 3NB-1600 mud pump experienced dropping discharge pressure and unstable mud flow during operation. Field inspection revealed severe internal wear on the φ160 V-liner from abrasive mud, causing internal pressure loss. Maintenance crews replaced the worn liner and matched piston assembly, quickly restoring full rated pump pressure and returning to drilling without major delays.
Case 2: Failed Seal Triggers High-Pressure Mud Leakage
A drilling team reported significant mud leakage at the valve cover of their 3NB-1600 mud pump after months of continuous operation. The valve cover seal and corresponding sealing ring had worn and hardened, losing full sealing capability. Using stocked parts from this annual list, technicians replaced the damaged seals and eliminated leakage completely, avoiding a full pump shutdown.
Case 3: Worn Valve Assembly Leads to Unstable Pump Operation
A rig’s mud pump developed abnormal noise and consistent pressure fluctuations during operation. Uneven wear on the valve body, valve seat and valve rubber disrupted proper opening and closing, disrupting mud flow. With pre-stocked complete valve assemblies, the team replaced the full module rapidly and restored smooth, stable pump operation.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are all these parts fully compatible with the LSNOI 3NB-1600 mud pump? | Yes, every part in this one-year recommended list is precision-engineered exclusively for the LSNOI Lanzhou LS 3NB-1600 mud pump, matching OEM dimensions, material specs and fit requirements. No field modification is needed for direct replacement. |
| How do I select the correct liner size for my drilling operation? | Choose liner size (φ140, φ160, φ170 or 150MM ceramic) based on your required mud flow rate and working pressure. For high-abrasion drilling conditions, we recommend bimetallic V-liners or ceramic liners for longer service life. |
| What is the standard replacement cycle for these wear parts? | Seals, washers and O-rings are recommended for quarterly replacement; pistons, valve rubbers and wear plates every 6 months; liners, valve assemblies and piston rods annually. This timeline aligns perfectly with this one-year procurement list. |
Procurement Guidance
This LSNOI 3NB-1600 mud pump one-year recommended parts list serves as a reliable, industry-aligned standard for oilfield equipment procurement and maintenance teams, providing a single, complete source for annual maintenance spares. By pre-purchasing these high-quality, OEM-compatible components, teams eliminate emergency parts shortages, reduce costly unplanned downtime and streamline inventory management. Each part supports fast, effective on-site repairs and full annual overhauls, keeping critical drilling operations on track.
