Product Introduction
This series covers all necessary replacement parts for the LSNOI 3NB-1600 mud pump discharge manifold, including precision sealing rings, high-strength M36x3 nuts and studs of two specifications, multi-model flanges, sturdy manifold case, mud strainer, cylindrical positioning pins, 2-inch pipe plug and elbow. Each part is made of oilfield-grade wear-resistant and pressure-resistant materials, processed by precision CNC machining, without on-site modification, grinding or secondary processing, suitable for daily routine inspection, regular maintenance and emergency fault repair of the discharge manifold.
Core Function Specifications
Every part is designed to adapt to harsh high-pressure drilling conditions, with clear and reliable performance indicators:
- High Pressure Resistance: The whole manifold system supports a rated working pressure of 35MPa, stably bearing instantaneous pressure surges without deformation or leakage.
- Effective Filtration: The built-in strainer filters solid impurities in mud, preventing downstream pipeline and valve blockage and reducing component erosion.
- Stable Sealing: Custom sealing rings and flange pairs realize zero leakage of high-pressure mud, adapting to temperature changes and long-term vibration.
- Anti-loosening Connection: High-strength studs and nuts maintain stable clamping force under long-term mechanical vibration, avoiding loose joints.
- Precise Positioning: Cylindrical pins ensure accurate alignment of flanges and internal components, avoiding installation deviation and sealing failure.
Structural Characteristics
These discharge manifold parts feature optimized structures suitable for oilfield field operation and maintenance:
- Modular Flange Design: Split flange structure facilitates quick disassembly and assembly, making internal component inspection and replacement more efficient.
- Reinforced Manifold Case: Thickened high-strength case provides stable load-bearing capacity, resisting external impact and internal pressure deformation.
- Detachable Strainer Structure: Easy to disassemble and clean, quickly removing mud impurities without dismantling the entire manifold.
- Wear-resistant Elbow Design: Thickened inner wall resists high-speed mud scouring, prolonging service life in high-abrasion working conditions.
- Standardized Fastener Configuration: Unified thread specifications ensure interchangeability, simplifying spare parts preparation and maintenance work.
Maintenance and Upkeep Suggestions
To ensure stable operation of the discharge manifold and prolong service life, follow these field-proven maintenance suggestions:
- Daily Inspection: Check all flange joints for mud seepage, observe whether studs and nuts are loose, and check strainer blockage.
- Weekly Maintenance: Clean the strainer to remove accumulated mud impurities, retorque all M36x3 studs to the standard torque of 1100N·m.
- Monthly Inspection: Check the wear degree of sealing rings, inspect the inner wall of the elbow for erosion, and verify the positioning accuracy of cylindrical pins.
- Regular Replacement: Replace worn sealing rings every 6 months, and inspect and replace severely eroded elbows and flanges annually.
- Storage Requirements: Store spare parts in a dry and ventilated environment, apply anti-rust treatment on metal surfaces, and keep sealing parts away from direct sunlight.
- We supply the following spare parts:
| 107.164.00 Discharge Manifold | ||
| Item No. | Part No. | Description |
| 701 | 107.04.110.42-1 | Ring |
| 702 | C3-9-92 | Nut M36x3 |
| 703 | C1-13-92 | Stud L=120 M36x3 |
| 704 | 107.164.01 | Flange |
| 705 | 107.164.10.00 | Case |
| 706 | 107.164.20.00 | Strainer |
| 707 | 107.10.110.16 | Stud L=215 M36x3 |
| 708 | 107.164.02 | Flange |
| 709 | GB117-86 | Pin A10x40 |
| 710 | 107.04A.160.03-1 | Ring |
| 711 | 107.164.03 | Flange |
| 712 | 107.164.04 | Plug 2” |
| 713 | 107.164.05 | Elbow 2” |
On-site Fault Repair Cases
Case 1: Flange Leakage Caused by Loose Studs
During continuous drilling operation, a drilling team found obvious high-pressure mud leakage at the discharge manifold flange. Long-term strong vibration caused M36x3 studs (Part No. C1-13-92) to loosen, resulting in poor flange sealing. Maintenance personnel retightened all studs according to standard torque, replaced worn sealing rings, and completely solved the leakage problem after pressure testing.
Case 2: Insufficient Mud Flow Due to Strainer Blockage
A mud pump appeared with unstable discharge pressure and reduced flow, affecting normal drilling progress. After inspection, a large amount of sand and impurities accumulated in the strainer (Part No. 107.164.20.00), blocking mud circulation. The team cleaned the strainer thoroughly, removed impurities, and restored normal mud flow and pressure immediately.
Case 3: Sealing Failure Caused by Worn Sealing Ring
After long-term use, a discharge manifold had slight mud seepage at the sealing ring position. The sealing ring (Part No. 107.04.110.42-1) was worn and aged, losing sealing performance. Workers quickly replaced the worn sealing ring with a new matched part, and the manifold resumed normal sealing operation without prolonged downtime.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts 100% compatible with LSNOI 3NB-1600 mud pump discharge manifold? | Yes, all parts in this list are specially designed for LSNOI Lanzhou LS 3NB-1600 mud pump discharge manifold (107.164.00), completely matching OEM dimensions and installation standards, with perfect fit and no on-site modification required. |
| What is the standard torque for M36x3 studs installation? | According to API 7K industry standards and OEM requirements, M36x3 studs should be tightened to 1100N·m, using a calibrated torque wrench and cross-tightening sequence to ensure uniform stress. |
| How often should the discharge manifold strainer be cleaned? | In conventional sand-containing mud drilling conditions, it is recommended to clean the strainer once a week; in high-abrasion and high-impurity drilling environments, shorten the cleaning cycle to 3 days to avoid blockage and pressure fluctuation. |
Procurement Guidance & Closing Statement
This LSNOI 3NB-1600 mud pump discharge manifold parts list is a professional and reliable reference for oilfield drilling equipment maintenance and spare parts procurement, providing clear and accurate part selection standards for daily maintenance, regular overhaul and emergency repair. All supplied parts undergo strict quality inspection and dimensional verification, fully complying with API 7K industry standards and original equipment quality requirements, with stable pressure resistance, wear resistance and sealing performance.
