Product Introduction
This annual recommended parts portfolio covers all necessary spare parts for the power end and fluid end of the LSNOI 3NB-1600 mud pump, including intermediate rods, single-lip oil seals, valve cover seals, sealing rings, return springs, multi-size V-liners and ceramic liners, piston assemblies, piston rods, locking nuts, wear plates, piston rod clamps, complete valve assemblies, valve bodies, valve seats, valve rubbers, studded fluid end modules, spray pipes, hoses, high-strength bolts, diaphragms, O-rings, pressure gauges and supporting motors. Each part is made of oilfield-grade wear-resistant alloy steel, high-pressure polymer sealing materials and corrosion-resistant metal, with precise CNC machining to fit original pump interfaces perfectly, requiring no on-site modification or secondary processing. These parts cover daily routine maintenance, quarterly preventive maintenance and annual comprehensive overhaul, fully meeting the full-cycle spare parts demand of the mud pump for one year.
Core Functional Specifications
Every part in this annual list is engineered to withstand harsh drilling site conditions, with authoritative performance data to ensure reliable long-term operation:
- High-Pressure Bearing Capacity: Fluid end sealing parts and valve assemblies support a rated working pressure of up to 35MPa, resisting instantaneous hydraulic impact and avoiding high-pressure mud leakage.
- Wear Resistance Performance: V-type bimetallic liners and ceramic liners have a continuous service life of up to 4000 working hours, adapting to high-abrasion sand-containing mud environments.
- Sealing Stability: All oil seals and sealing rings adopt mud-resistant and aging-resistant formulas, with zero leakage under long-term vibration and temperature fluctuations.
- Fastener Strength: High-strength bolts and nuts meet 12.9-grade industrial standards, with tensile strength ≥1080MPa, preventing loosening or fracture under continuous vibration.
- Interchangeability: All parts match original OEM dimensions, enabling quick disassembly and replacement, reducing on-site maintenance downtime.
Structural Design Features
These annual maintenance parts feature optimized designs tailored to the 3NB-1600 mud pump, focusing on wear resistance, easy maintenance and stable operation:
- Wear-Resistant Liner Design: Multi-size V-liners and ceramic liners adopt composite molding technology, with smooth inner walls to reduce mud scouring and uniform stress distribution.
- Integral Valve Assembly Design: Complete valve assemblies include valve bodies, seats and rubbers, realizing integrated replacement and improving sealing and opening-closing stability.
- Multi-Specification Sealing System: Custom-sized sealing rings and gaskets fit all key joints of the mud pump, forming a full-range sealing protection system.
- Reinforced Transmission Components: Piston rods and intermediate rods adopt integral forging technology, with high torsional strength and no deformation under heavy load.
- Quick-Release Fastening Design: Standardized bolts, nuts and locking clips enable quick assembly and disassembly, improving maintenance efficiency.
Applicable Operating Conditions
All parts in this annual list adapt to various harsh drilling scenarios, ensuring stable performance of the LSNOI 3NB-1600 mud pump year-round:
- Onshore Drilling Operations: Land deep-well rigs, desert drilling platforms, mountain and frozen soil drilling sites, adapting to high-abrasion mud, large temperature differences and dust erosion.
- Long-Term Continuous Operation: Suitable for 24-hour uninterrupted drilling construction, withstanding long-term full-load operation and frequent hydraulic impact.
- Conventional & Slightly Corrosive Mud: Compatible with ordinary drilling mud and weakly corrosive mud systems, with strong corrosion and wear resistance.
- Power & Fluid End Maintenance: Covering all maintenance scenarios of the mud pump power end and fluid end, meeting annual preventive maintenance and emergency repair needs.
We supply the following spare parts:
| No. | P/N | Description |
| 1 | 107.11.01.02 | ROD, Intermediate |
| 2 | 107.11.97.00 | Single Lip Oil Seal |
| 3 | 107.11.110.05 | Seal, Valve Cover |
| 4 | 107.11.110.68 | Seal |
| 5 | 107.11.110.16 | Spring |
| 6 | 107.11.110.36 | φ170, V-liner |
| 7 | 107.11.110.35 | φ160, V-liner |
| 8 | 107.11.110.33 | φ140, V-liner |
| 9 | 107.06.70.00 | φ170 piston assy |
| 10 | 107.06.68.00 | φ160 piston assy |
| 11 | 107.06.64.00 | φ140 piston assy |
| 12 | 107.11.110.39 | Piston rod |
| 13 | 107.04.120.00 | M39x3 Nut |
| 14 | 107.11.110.42 | Seal Ring |
| 15 | 107.11.110.43 | Wear Plate |
| 16 | 107.11.110.65-1 | Plate |
| 17 | 107.11.110.52-1 | Locking Clip |
| 18 | 107.04.110.67 | Bush |
| 19 | 107.11.114.00 | Piston-rod Clamp |
| 20 | 107.04.140.00 | Valve Assy. |
| 21 | 107.11.110.40 | Cover |
| 22 | 107.11.330.00 | Cage |
| 23 | 107.11.340.00 | Valve cover |
| 24 | 107.10.110.03 | Seal spacer |
| 25 | 107.04.110.13 | φ210xφ180×15 seal |
| 26 | 107.04.110.21 | φ155xφ140×10 seal |
| 27 | 107.11.110.60 | Washer |
| 28 | 107.11.110.20 | Spray Pipe |
| 29 | 107.11.113.00-1 | Hose |
| 30 | 107.130.05 | 1″-8UN-2A bolt |
| 31 | 107.130.01.00-1 | Diaphragm |
| 32 | GB93-87 | Washer |
| 33 | D4-4-66 | O-ring |
| 34 | 107.130.02 | Rubber plate |
| 35 | 107.130.04 | Plate |
| 36 | Relief valve | |
| 37 | Motor YB112M-4kw | |
| 38 | Gauge, dampner | |
| 39 | Gauge, liner washer | |
| 01 | 107.11.110.14-2 | Moudle with Stud, Fluid End |
| 01 | 107.11.110.14-2 | Moudle with Stud, Fluid End |
| ITEM | PN | DESCRIPTION |
| 01 | 107.106.140.01 | Valve body |
| 02 | 107.11.140.04 | Valve Seat |
| 03 | 107.11.140.03 | Valve Rubber |
| 04 | 107.11.110.01 | Cover |
| 05 | 107.11.110.03 | Ring Thread |
| 06 | 150MM | Liner (Ceramic) |
| 07 | 150MM | Piston |
On-Site Fault Repair Case Studies
Case 1: Worn Liner Triggering Insufficient Mud Pressure
A land drilling rig’s LSNOI 3NB-1600 mud pump suffered from insufficient discharge pressure and unstable mud flow. After inspection, the φ160 V-liner was severely worn by abrasive mud, causing internal pressure leakage. Maintenance staff replaced the worn liner and matching piston assembly, and the pump pressure quickly returned to the rated value, resuming normal drilling operation.
Case 2: Damaged Seal Causing High-Pressure Mud Leakage
During long-term drilling operation, a mud pump developed serious mud leakage at the valve cover position. The valve cover seal and sealing ring had lost sealing performance due to wear and aging. Technicians replaced the relevant seals and gaskets in the annual parts list, and completely eliminated the leakage fault without prolonged downtime.
Case 3: Worn Valve Assembly Leading to Unstable Pump Operation
A drilling team’s mud pump showed abnormal noise and unstable operation, with frequent pressure fluctuations. The valve body, valve seat and valve rubber were worn unevenly, affecting normal opening and closing. Workers replaced the complete valve assembly using spare parts prepared in advance, quickly restoring stable operation of the mud pump.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts 100% compatible with LSNOI 3NB-1600 mud pump? | Yes, all parts in this one-year recommended list are precisely designed for the LSNOI Lanzhou LS 3NB-1600 mud pump, matching OEM dimensions and performance standards, with perfect interface fit and no on-site modification required for replacement. |
| How to choose the right liner size for my operation? | Select liner size (φ140/φ160/φ170/150MM ceramic) based on your drilling mud flow and pressure requirements; high-abrasion working conditions are recommended to use V-type bimetallic or ceramic liners for longer service life. |
| What is the normal replacement cycle for these wearing parts? | Seals, washers and O-rings are recommended to be replaced quarterly; pistons, valve rubbers and wear plates every 6 months; liners, valve assemblies and piston rods annually, which fully matches this one-year parts procurement list. |
Procurement Guidance
This LSNOI 3NB-1600 mud pump one-year recommended parts list is a professional, practical guide for oilfield equipment procurement and maintenance teams, providing a one-stop annual spare parts solution to avoid emergency stockouts, fragmented procurement and unplanned downtime. Preparing these high-quality, OEM-compatible spare parts in advance enables on-site maintenance staff to quickly respond to various common faults, complete routine maintenance and annual overhaul efficiently, and guarantee continuous and stable operation of drilling equipment.
