Product Introduction
This series covers all core replacement parts for the LS-NOV 3NB-1300C mud pump discharge manifold assembly, including the main manifold case, high-pressure strainer, multi-specification flanges, sealing rings, high-strength studs, nuts, positioning pins, plugs, elbows and various sealing accessories. Each part is made of oilfield-grade high-pressure-resistant, wear-resistant and corrosion-resistant materials, processed by precision CNC machining and overall pressure testing, achieving 100% direct interchangeability with original manifold components, requiring no on-site modification, grinding or secondary processing, suitable for daily inspection, routine maintenance, seasonal preventive replacement and full manifold overhaul.
Core Function Specifications
Every component in this discharge manifold parts lineup is engineered to withstand harsh high-pressure drilling conditions, with verified authoritative performance indicators:
- High-Pressure Pressure Holding Capacity: The whole manifold system maintains stable pressure under rated 35MPa working pressure, with zero high-pressure mud leakage under long-term hydraulic impact.
- Efficient Mud Filtration: The built-in strainer filters solid abrasive particles in mud, preventing damage to rear-end drilling pipelines and equipment.
- Reliable Sealing Performance: Custom high-pressure sealing rings form a closed sealing system, adapting to mud temperature fluctuations and strong mechanical vibration.
- Stable Fastening Connection: High-strength M36x3 studs and matched nuts provide stable clamping force, avoiding joint loosening under high-pressure impact.
- Smooth Mud Discharge: Optimized manifold case and elbow structure reduce mud flow resistance and scouring wear on inner walls.
Structural Characteristics
These discharge manifold assembly parts feature optimized structures suitable for oilfield field maintenance and long-term durable operation:
- Integral High-Strength Case: Integrated forged manifold case with high pressure resistance and rigidity, avoiding deformation or cracking under high-pressure load.
- Detachable Strainer Design: Independent strainer module facilitates quick disassembly, cleaning and replacement, simplifying daily maintenance operations.
- Standardized Flange Interface: Unified high-pressure flange design ensures stable connection with drilling pipelines, with strong compatibility and easy installation.
- Precision Positioning Structure: Positioning pins realize accurate alignment of flanges and manifold case, ensuring uniform stress of sealing surfaces.
- Modular Sealing System: Multi-specification sealing rings match different interfaces, with strong adaptability and convenient replacement of vulnerable parts.
Applicable Working Conditions
All discharge manifold parts adapt to various harsh oilfield drilling scenarios matching the LS-NOV 3NB-1300C mud pump:
- High-Pressure Drilling Operations: Onshore deep well, conventional drilling and workover operations, adapting to 35MPa rated high-pressure mud discharge.
- Abrasive Mud Environment: Suitable for sand-containing abrasive drilling mud, with strong scouring and erosion resistance.
- Harsh Outdoor Environments: Desert, mountain, cold and hot region drilling platforms, adapting to ambient temperatures ranging from -40℃ to 70℃.
- Continuous Heavy-Load Operation: 24-hour uninterrupted operation with the main mud pump, resisting frequent hydraulic impact and mechanical vibration.
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: High-Pressure Mud Leakage Caused by Sealing Ring Failure
Obvious high-pressure mud leakage occurred at the flange joint of the 3NB-1300C mud pump discharge manifold, causing unstable discharge pressure. The high-pressure sealing ring was aged and damaged by mud erosion, losing sealing performance. Maintenance staff replaced the damaged sealing ring, cleaned the flange sealing surface, retightened the studs, and eliminated the leakage fault completely.
Case 2: Unstable Discharge Pressure Due to Strainer Blockage
The mud pump discharge pressure fluctuated abnormally, and the mud delivery volume was insufficient. A large amount of solid impurities accumulated in the manifold strainer, leading to blockage. Workers disassembled and cleaned the strainer thoroughly, removed internal impurities, checked strainer integrity, and restored normal mud discharge after reinstallation.
Case 3: Joint Loosening Triggered by Stud Fatigue Damage
After long-term high-pressure impact, partial studs of the manifold flange were fatigued and loosened, resulting in slight leakage at the joint. The damaged studs and matched nuts were replaced, and all studs were tightened according to standard torque in sequence, ensuring stable connection of the manifold assembly.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with LS-NOV 3NB-1300C mud pump discharge manifold? | Yes, all parts in this list are custom-designed for the LS-NOV 3NB-1300C mud pump discharge manifold (107.164.00), fully matching OEM dimensions, material standards and installation requirements with 100% direct interchangeability. |
| What is the standard tightening torque for M36x3 manifold studs? | In accordance with API 7K industry standards, the standard tightening torque for M36x3 high-strength studs is 1100N·m, and a calibrated torque wrench should be used for uniform cross-tightening. |
| How often should the discharge manifold strainer be cleaned? | Under conventional drilling conditions, clean the strainer every 30 days; shorten the cleaning cycle to 15 days in high-abrasion mud environments to avoid blockage. |
Procurement Guidance
This LS-NOV 3NB-1300C mud pump discharge manifold parts list is a professional and reliable reference for oilfield equipment maintenance and spare parts procurement teams, providing clear, accurate part selection and procurement standards for daily maintenance, seasonal replacement and full manifold overhaul. All supplied parts undergo strict dimensional verification, high-pressure pressure testing and wear resistance testing, fully complying with API 7K industry standards and original equipment quality requirements, with ultra-high pressure resistance, wear resistance and safety stability.
