Product Introduction
This series covers all core replacement parts for the LS-NOV 3NB-1300C mud pump pulsation dampener assembly, including the high-strength dampener casing, wear-resistant diaphragm, diaphragm stabilizer, flange assembly, high-strength studs, inner-hexagon screws, sealing O-rings, cut-off valve, pressure gauge assembly, pipe caps, T-joints, various sealing washers, lifting screws and fastening nuts. Each part is made of oilfield-grade high-pressure-resistant, corrosion-resistant and fatigue-resistant materials, processed by precision CNC machining and hydraulic pressure testing, achieving 100% direct interchangeability with original dampener components, requiring no on-site modification or secondary processing, suitable for daily inspection, routine maintenance, preventive replacement and full dampener overhaul.
Core Function Specifications
Every component in this pulsation dampener parts lineup is engineered to adapt to harsh high-pressure mud drilling conditions, with verified authoritative performance indicators:
- High-Efficiency Pulsation Absorption: The flexible diaphragm quickly absorbs hydraulic pressure pulsation, stabilizing discharge pressure fluctuation within ±0.2MPa.
- Stable High-Pressure Sealing: Custom O-rings and sealing washers form a reliable closed sealing system, preventing high-pressure mud leakage under long-term hydraulic impact.
- Real-Time Pressure Monitoring: The Y-100 0-10MPa pressure gauge provides accurate real-time pressure data, facilitating timely fault detection and parameter adjustment.
- Reliable Fastening Connection: High-strength M33x2-2a and M48x3-2a studs & nuts provide stable clamping force, avoiding joint loosening under strong vibration and pressure impact.
- Safe Pressure Regulation: The matched cut-off valve and pipe joints realize convenient pressure relief and air charging operations, simplifying daily maintenance.
Structural Characteristics
These pulsation dampener parts feature optimized structures suitable for oilfield field maintenance and long-term durable operation:
- Integral Forged Casing: High-strength integrated casing with excellent pressure resistance and rigidity, avoiding deformation or cracking under high-pressure load.
- Detachable Diaphragm Module: Independent diaphragm and stabilizer design enables quick disassembly and replacement, reducing maintenance time significantly.
- Precision Sealing Structure: Multi-stage O-ring and washer sealing system, with strong adaptability to mud temperature and pressure changes.
- Standardized Flange Interface: Unified flange design ensures stable connection with the mud pump discharge pipeline, with high compatibility and easy installation.
- Convenient Maintenance Design: Equipped with lifting screws and standardized fasteners, facilitating hoisting, disassembly and assembly operations on site.
Applicable Working Conditions
All pulsation dampener parts adapt to various harsh oilfield drilling scenarios matching the LS-NOV 3NB-1300C mud pump:
- High-Pressure Drilling Operations: Onshore conventional drilling, deep well drilling and workover operations, adapting to 0-10MPa rated working pressure.
- Mud Discharge System Environment: Suitable for various drilling mud media, with strong corrosion resistance and mud erosion resistance.
- Harsh Outdoor Environments: Desert, mountain, cold and hot region drilling platforms, adapting to ambient temperatures ranging from -35℃ to 75℃.
- 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:
| 107.130.00-2 Pulsation Dampener | ||
| Item No. | Part No. | Description |
| 601 | 107.130.15 | Inner-hexagon screw M33x2-2a |
| 602 | 107.130.01-1 | Casing |
| 603 | 107.130.01.00-1 | Diaphragm |
| 604 | 107.130.02 | Diaphragm stabilizer |
| 605 | 107.130.04 | Main bearing retainer plate |
| 606 | 107.130.05 | Bolt 1”-8UNC-2A |
| 607 | GB93-87 | Washer 27 |
| 608 | 107.130.13 | Screw plug 1-1/4”-18NPT |
| 609 | GB825-88 | Lifting screw M20 |
| 610 | 107.130.06 | Pipe cap G5/8” |
| 611 | 107.130.07 | Washer 19 δ4 |
| 612 | 107.130.08 | T-joint |
| 613 | 107.130.09-1 | Washer 12/7 δ3 |
| 614 | 107.130.10-1 | Washer 16/7 δ3 |
| 615 | Y-100 model | Pressure gauge 0-10MPa 2.5 |
| 616 | 107.130.03.00 | Cut-off valve |
| 617 | 107.132.04 | Cover |
| 618 | 107.132.05 | Nut M48x3-2a |
| 619 | 107.132.06 | Stud M48x3-2a |
| 620 | D4-4-66 | O-ring 140×5.7 |
| 621 | 107.130.16 | Flange |
| 622 | 107.04.110.44 | Nut M33x2-2a |
| 623 | 107.130.03 | Stud M33x2-2a L=100 |
On-site Fault Repair Cases
Case 1: Mud Leakage Caused by Damaged Diaphragm
The pulsation dampener failed to stabilize pressure normally, with obvious mud leakage at the joint. The internal diaphragm was ruptured due to long-term hydraulic impact and fatigue damage. Maintenance staff replaced the dedicated diaphragm, reassembled the stabilizer, retightened all fasteners, and restored normal pressure stabilization function.
Case 2: Invalid Sealing Due to O-Ring Aging
Slight high-pressure mud leakage occurred at the casing flange joint, leading to gradual pressure loss. The O-ring seal was aged, hardened and lost elasticity due to long-term mud erosion and temperature changes. Workers replaced the matching O-ring, cleaned the sealing groove, and completely eliminated the leakage fault.
Case 3: Unstable Pressure Monitoring Due to Faulty Pressure Gauge
The dampener pressure gauge showed abnormal fluctuation and inaccurate readings, making it impossible to judge the operating state. The pressure gauge was damaged by hydraulic impact, and the interface was blocked by mud impurities. Technicians replaced the Y-100 pressure gauge, cleaned the connecting pipeline, and calibrated the pressure reading.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with LS-NOV 3NB-1300C mud pump pulsation dampener? | Yes, all parts in this list are custom-designed for the LS-NOV 3NB-1300C mud pump pulsation dampener (107.130.00-2), fully matching OEM dimensions, material standards and installation requirements with 100% direct interchangeability. |
| What is the standard working pressure range of this pulsation dampener? | The rated working pressure is 0-10MPa, matching the Y-100 model pressure gauge for real-time monitoring, and the maximum instantaneous impact pressure resistance is 12.5MPa. |
| How often should the dampener diaphragm be replaced? | Under normal operating conditions, replace the diaphragm every 5000-6000 working hours; shorten the replacement cycle if working in high-abrasion mud or frequent high-pressure impact environments. |
Procurement Guidance
This LS-NOV 3NB-1300C mud pump pulsation dampener 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, routine replacement and full dampener overhaul. All supplied parts undergo strict dimensional verification, high-pressure hydraulic testing and fatigue resistance testing, fully complying with API 7K industry standards and original equipment quality requirements, with ultra-high pressure resistance, sealing performance and service life.
