Product Introduction
This series of discharge manifold replacement parts covers all core matching components for the LSNOI 3NB-1600 mud pump, including high-precision sealing rings, 12.9-grade high-strength studs, heavy-duty locking nuts, integral flanges, manifold shell, mud strainer, cylindrical positioning pins, threaded plugs, discharge elbows and other dedicated fittings. Every part is made of high-strength alloy steel, high-pressure wear-resistant sealing materials and corrosion-resistant metal substrates, processed with precision machining and heat treatment processes to ensure perfect fit with original manifold interfaces, requiring no on-site modification, grinding or secondary processing. The parts are designed for quick disassembly and assembly under high-pressure working conditions, suitable for daily routine inspection, emergency leakage repair and full discharge manifold overhaul.
Core Functional Specifications
Each component is engineered to withstand harsh high-pressure drilling site operating conditions, with clear authoritative performance indicators to ensure safe and stable field operation:
- High-Pressure Bearing Capacity: The entire manifold assembly supports a rated working pressure of 0-35MPa, fully adapting to the extreme high-pressure mud discharge requirements of the LSNOI 3NB-1600 mud pump, resisting instantaneous pressure impact and long-term pressure fluctuation.
- Sealing Reliability: Specialized high-pressure sealing rings adopt oil-resistant, mud-resistant and wear-resistant polymer materials, achieving zero leakage under continuous high-pressure mud scouring, with a service life of up to 3000 working hours.
- Fastener Stability: 12.9-grade high-strength studs and matching heavy-duty nuts feature anti-loosening and anti-corrosion treatments, maintaining stable locking torque under long-term high-frequency vibration, with no fracture or loosening under rated pressure.
- Mud Filtration Performance: The built-in strainer effectively blocks large mud particles and abrasive impurities, preventing damage to downstream circulation equipment and ensuring smooth mud discharge.
Applicable Operating Conditions
This series of discharge manifold parts performs stably in various harsh high-pressure drilling scenarios, with strong environmental and medium adaptability:
- Onshore Deep-Well Drilling: Land deep-well rigs, desert drilling platforms, mountain and frozen soil drilling sites, adapting to high-pressure mud delivery, dust erosion and large temperature difference environments.
- Offshore Drilling Operations: Offshore platforms and jack-up drilling rigs, resisting salt spray corrosion, high humidity and continuous wave-induced vibration without performance degradation.
- High-Abrasion Mud Conditions: Suitable for high-viscosity, sand-containing, corrosive drilling mud, with strong erosion and corrosion resistance of pressure-bearing and sealing parts.
- Continuous High-Pressure Operation: Adapting to 24-hour uninterrupted high-pressure mud discharge, maintaining stable sealing and pressure-bearing performance under long-term full-load operation.
Maintenance & Service Recommendations
To ensure the safe and stable operation of the discharge manifold under high-pressure conditions and prolong its service life, follow these API-standardized high-pressure equipment maintenance protocols:
- Daily Inspection: Check all flange joints and sealing positions for high-pressure mud leakage; monitor system discharge pressure stability; check for abnormal vibration or noise.
- Weekly Maintenance: Tighten high-strength studs and nuts to API standard torque; clean mud deposits on the manifold surface and strainer surface.
- Monthly Maintenance: Inspect sealing rings for wear, aging or deformation; check flange sealing surfaces for scratches or damage; inspect studs and nuts for corrosion or thread damage.
- Quarterly Maintenance: Disassemble and clean the internal strainer to remove mud impurities; calibrate the fastening torque of all high-strength fasteners; replace severely worn sealing parts.
- Storage Requirements: Store spare parts in a dry, ventilated and dust-free environment; apply anti-rust treatment on metal fasteners; sealing rings should be protected from direct sunlight and high temperature to prevent premature aging.
- 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 Case Studies
Case 1: Worn Sealing Ring Causing High-Pressure Mud Leakage
A land deep-well drilling rig’s LSNOI 3NB-1600 mud pump had severe high-pressure mud leakage at the discharge manifold flange. On-site inspection revealed that the sealing ring (107.04.110.42-1) was severely worn and lost sealing performance due to long-term high-pressure mud scouring. Maintenance personnel replaced the damaged sealing ring, re-tightened all matching studs evenly according to standard torque, and completely eliminated the high-pressure leakage fault.
Case 2: Loose Studs Triggering Manifold Vibration & Leakage
An offshore drilling site’s 3NB-1600 mud pump discharge manifold showed obvious abnormal vibration and slight mud leakage during full-load operation. Inspection found that multiple high-strength studs (107.10.110.16) were loose due to long-term wave-induced vibration, leading to uneven flange fitting. Workers re-tightened all studs to rated torque, replaced damaged nuts, and restored stable operation of the manifold.
Case 3: Strainer Blockage Causing Insufficient Discharge Pressure
A drilling team’s 3NB-1600 mud pump suffered from insufficient discharge pressure and unstable mud flow. The fault was caused by large mud particles and impurities blocking the internal strainer (107.164.20.00). Technicians disassembled the strainer, thoroughly cleaned accumulated impurities, checked and replaced worn sealing parts, and the discharge pressure returned to normal quickly.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these discharge manifold parts exclusively compatible with LSNOI 3NB-1600 mud pump? | Yes, all parts in this catalog are precisely designed to match the LSNOI Lanzhou LS 3NB-1600 mud pump discharge manifold (107.164.00), with OEM-standard dimensions and perfect high-pressure interface fitting, no on-site modification required for installation. |
| What is the standard tightening torque for M36×3 manifold studs? | In accordance with API 7K high-pressure equipment standards, the tightening torque for M36×3 12.9-grade high-strength studs is controlled at 1100-1150N·m, and must be tightened evenly in a crosswise sequence to ensure uniform sealing pressure. |
| How often should the discharge manifold sealing rings be replaced? | Under normal high-pressure drilling conditions, sealing rings are recommended to be replaced every 2800-3200 working hours; in high-abrasion, high-corrosion mud environments, the replacement cycle should be shortened to 2000-2500 working hours to prevent sudden leakage. |
Procurement Guidance
This LSNOI 3NB-1600 mud pump discharge manifold parts list is a professional and reliable reference for oilfield drilling equipment management, high-pressure pipeline maintenance and spare parts procurement teams, providing standardized, high-pressure-resistant and wear-resistant spare parts solutions for daily routine maintenance, emergency leakage repair and spare parts inventory preparation. Using these OEM-standard replacement parts can effectively avoid the risks of poor fitting, insufficient pressure resistance and short service life caused by non-standard parts, quickly resolve common high-pressure discharge manifold faults, and ensure the safe and stable operation of mud pump circulation system.
