Product Introduction
This series of pulsation dampener parts covers all replacement components suitable for Lanzhou LS 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pumps, including dampener main body casing, pneumatic charging components, welding parts, bearing retaining plates, high-strength bolts, studs, nuts, various types of washers, O-rings, sealing gaskets, pressure gauges, cut-off valves, pipe caps and other matching parts. All parts adopt universal design for the four pump models, eliminating the trouble of model matching confusion; parts are made of high-strength alloy steel, wear-resistant and pressure-resistant rubber materials, with stable performance and long service life, fully meeting the needs of daily maintenance, emergency repair and full overhaul of pulsation dampeners on drilling sites.
Structural Design Features
These pulsation dampener parts are designed with on-site practicality, durability and easy maintenance as core priorities, fully adapting to drilling site operating conditions:
- Integrated Casing Structure: The dampener casing features high-strength integrated welding design, with smooth inner wall and strong pressure resistance, avoiding air leakage and structural deformation under high pressure.
- Modular Sealing System: Combined sealing design of O-rings and gaskets, simple replacement process, good sealing fit, effectively preventing air leakage and mud backflow.
- Quick-Connection Pneumatic Components: Pneumatic charging parts and cut-off valves adopt standard interface design, easy to disassemble and assemble, realizing fast air charging and pressure detection.
- Shock-Proof & Corrosion-Resistant: Pressure gauges have built-in shock-proof structure, metal surfaces of fasteners are anti-corrosion treated, adapting to humid, high-vibration and mud-corrosive environments.
- Universal Matching: Most parts are universally applicable to four models of 3NB series mud pumps, reducing inventory types and procurement costs for users.
Applicable Operating Conditions
This series of pulsation dampener parts is suitable for various drilling scenarios of Lanzhou LS 3NB series mud pumps, with stable performance in harsh environments:
- Onshore Drilling: Land drilling rigs, desert drilling platforms, mountain drilling sites, adapting to dust, large temperature differences and continuous high-vibration operation.
- Offshore Drilling: Offshore drilling platforms and offshore rigs, resisting salt spray corrosion, high humidity and marine environmental vibration.
- Conventional & Deep Well Drilling: Suitable for conventional drilling, deep well drilling and horizontal directional drilling, matching different mud discharge pressures and flow rates.
- Harsh Mud Medium: Adapt to drilling mud containing sand, rock debris and chemical additives, with strong corrosion resistance and wear resistance of sealing parts.
Maintenance & Service Recommendations
To prolong the service life of pulsation dampener and avoid sudden failure, follow these standardized maintenance suggestions compliant with API standards:
- Daily Inspection: Check the pressure gauge reading to ensure internal air pressure is maintained at 60%-70% of mud working pressure; check for air leakage at sealing joints and interface positions.
- Weekly Maintenance: Tighten all connecting bolts and studs to rated torque; clean the surface of the dampener casing to avoid mud accumulation and corrosion.
- Monthly Maintenance: Check the sealing performance of O-rings and gaskets, replace worn sealing parts in time; calibrate the pressure gauge to ensure accurate data.
- Quarterly Maintenance: Overhaul the cut-off valve and pneumatic charging components, replace damaged parts; check the firmness of the main bearing retainer plate and clean internal impurities.
- Storage Requirements: Store spare parts in a dry, ventilated and dust-proof environment; sealing parts should be protected from light and high temperature to avoid aging.
- We supply the following spare parts:
| NAME | PART NO | |||
| NAME | 3NB500C | 3NB1000C | 3NB1300C | 3NB1600 |
| Slush pump | 107.15.00 | 107.14.00 | 107.12.00 | 107.11.00 |
| Pulsation dampener | 107.130.00-2 | 107.130.00-2 | 107.130.00-2 | 107.130.00-2 |
| Screw | 107.130.15(M33×2-2a) | 107.130.15(M33×2-2a) | 107.130.15(M33×2-2a) | 107.130.15(M33×2-2a) |
| Casing | 107.130.01-1 | 107.130.01-1 | 107.130.01-1 | 107.130.01-1 |
| pneumathed | 107.130.01.00-1 | 107.130.01.00-1 | 107.130.01.00-1 | 107.130.01.00-1 |
| Weldwood | 107.130.02 | 107.130.02 | 107.130.02 | 107.130.02 |
| main bearing retainer plate | 107.130.04 | 107.130.04 | 107.130.04 | 107.130.04 |
| Bolt | 107.130.05(1″-8UNC-2A) | 107.130.05(1″-8UNC-2A) | 107.130.05(1″-8UNC-2A) | 107.130.05(1″-8UNC-2A) |
| Washer | GB93-87(27) | GB93-87(27) | GB93-87(27) | GB93-87(27) |
| Screw plug | 107.130.13(1/4″-18NPT) | 107.130.13(1/4″-18NPT) | 107.130.13(1/4″-18NPT) | 107.130.13(1/4″-18NPT) |
| Lifting screw | GB825-88(M20) | GB825-88(M20) | GB825-88(M20) | GB825-88(M20) |
| Pipe cap | 107.130.06(G5/8″) | 107.130.06(G5/8″) | 107.130.06(G5/8″) | 107.130.06(G5/8″) |
| Washer | 107.130.07(φ19 δ4) | 107.130.07(φ19 δ4) | 107.130.07(φ19 δ4) | 107.130.07(φ19 δ4) |
| Tee | 107.130.08(φ16/φ7 δ3) | 107.130.08(φ16/φ7 δ3) | 107.130.08(φ16/φ7 δ3) | 107.130.08(φ16/φ7 δ3) |
| Washer | 107.130.09-1(φ12/φ7 δ3) | 107.130.09-1(φ12/φ7 δ3) | 107.130.09-1(φ12/φ7 δ3) | 107.130.09-1(φ12/φ7 δ3) |
| Washer | 107.130.10-1(φ16/φ7 δ3) | 107.130.10-1(φ16/φ7 δ3) | 107.130.10-1(φ16/φ7 δ3) | 107.130.10-1(φ16/φ7 δ3) |
| Pressure gauge | Y-100(0-10MPa 2.5) | Y-100(0-10MPa 2.5) | Y-100(0-10MPa 2.5) | Y-100(0-10MPa 2.5) |
| Out-off valve | 107.130.03.00 | 107.130.03.00 | 107.130.03.00 | 107.130.03.00 |
| Cover | 107.132.04 | 107.132.04 | 107.132.04 | 107.132.04 |
| Nut | 107.132.05(M48×3-2a) | 107.132.05(M48×3-2a) | 107.132.05(M48×3-2a) | 107.132.05(M48×3-2a) |
| Stud | 107.132.06(M48×3-2a) | 107.132.06(M48×3-2a) | 107.132.06(M48×3-2a) | 107.132.06(M48×3-2a) |
| O-ring | D4-4-66(140×5.7) | D4-4-66(140×5.7) | D4-4-66(140×5.7) | D4-4-66(140×5.7) |
| Plenge | 107.130.16 | 107.130.16 | 107.130.16 | 107.130.16 |
| Nut | 107.04.110.44(M33×2-2a) | 107.04.110.44(M33×2-2a) | 107.04.110.44(M33×2-2a) | 107.04.110.44(M33×2-2a) |
| Stud | 107.130.03(M33×2-2a L=100) | 107.130.03(M33×2-2a L=100) | 107.130.03(M33×2-2a L=100) | 107.130.03(M33×2-2a L=100) |
| Bolt | GB5783-86(M12×20) | GB5783-86(M20 ×55) | GB5783-87(M20× 55) | GB5783-87(M20× 55) |
| Washer | GB93-87(16) | GB93-87(20) | GB93-87(20) | GB93-87(20) |
| Gasket | 107.06.90.15（δ5） | 107.14.01.00 | 107.11.90.33 | 107.11.90.33 |
| Windows cover | 107.06.90.16（δ6） | 107.04.90.02( δ 3_) | 107.04.90.03( δ 3_) | 107.04.90.03( δ 3_) |
| Bolt | GB5783-86(M16×45) | GB5783-86(M25 55) | GB5783-87(M20 ×55) | GB5783-87(M20 ×55) |
| Washer | GB93-87(16) | GB93-87(20) | GB93-87(20) | GB93-87(20) |
| Bolt | GB5783-86(M16×35) | GB5783-86(M16×30) | GB5783-86(M16×30) | GB5783-86(M16×30) |
| Washer | GB93-87(16) | GB93-87(16) | GB93-87(16) | GB93-87(16) |
| Gasket | 107.15.96.02（δ5） | 107.11.96.02( δ5) | 107.11.96.02( δ5) | 107.11.96.02( δ5) |
| Packing box | 107.15.96.03 | 107.11.96.03 | 107.11.96.03 | 107.11.96.03 |
| Gasket | 107.15.96.01（δ5） | 107.14.96.01( δ5) | 107.12.96.01( δ5) | 107.11.96.01( δ5) |
| Intermediate rod | 107.15.01.01 | 107.11.01.02 | 107.11.01.02 | 107.11.01.02 |
| Water retainer | 107.06.39.00 | 107.11.70.00 | 107.11.70.00 | 107.11.70.00 |
| Frame assy | 107.15.90.00 | 107.14.90.00 | 107.11.90.00 | 107.11.90.00 |
| Spary pump system | 107.15.101.00 | 107.14.101.00 | 107.11.101.00 | 107.11.101.00 |
| Crosshead guide lower | 107.15.90.07 | 107.14.90.06 | 107.11.90.03 | 107.11.90.03 |
| Bolt | 107.15.90.08 | 107.14.90.07 | 107.11.90.04-1 | 107.11.90.04-1 |
| Washer | GB95-85(24) | GB97.1-85(24) | GB97.1-85(24) | GB97.1-85(24) |
| Wire | φ3 L=5280 | φ3 L=5280 | φ3 L=5400 | φ3 L=5400 |
| Gasket | 107.11.90.26( φ 40× φ26) | 107.11.90.26( φ40 × φ26) | 107.11.90.26( φ40 × φ26) | 107.11.90.26( φ40 × φ26) |
| Bolt | 107.06.60(M24×65) | 107.11.01.01M30 | 107.11.01.01M30 | 107.11.01.01M30 |
| Wire | φ 3 L=2400 | φ3 L=2400 | φ3 L=2400 | φ3 L=2400 |
| Bolt | GB5782-86(M24×100) | GB5783-86(M24 ×100) | GB5783-86(M24 ×90) | GB5783-86(M24 ×90) |
| Nut | GB6170-86(M24) | GB170-86(M24) | GB170-86(M24) | GB170-86(M24) |
On-Site Fault Repair Case Studies
Case 1: Pulsation Dampener Air Leakage Causing Pressure Failure
A land drilling rig’s Lanzhou LS 3NB1000C mud pump had invalid pressure stabilization, with the pulsation dampener pressure gauge reading dropping rapidly. On-site inspection found that the O-ring (140×5.7) was severely worn, leading to continuous air leakage. Maintenance personnel replaced the O-ring and relevant sealing gaskets, recharged the air to the rated pressure, and the dampener resumed normal pressure stabilization function, solving the problem within 1.5 hours.
Case 2: Damaged Cut-Off Valve Causing Inability to Charge Air
An offshore drilling site’s LS 3NB1300C mud pump pulsation dampener could not be charged with air, unable to adjust internal pressure. The fault was located as a damaged internal cut-off valve (107.130.03.00), which could not seal normally. After replacing the cut-off valve assembly and relevant washers, the air charging function was restored, and the dampener worked normally without repeated faults.
Case 3: Loose High-Strength Bolts Causing Pipeline Vibration
A well drilling team’s LS 3NB1600 mud pump had severe discharge pipeline vibration, accompanied by abnormal noise. Inspection showed that the connecting bolts (1″-8UNC-2A) of the pulsation dampener were loose due to long-term vibration, resulting in poor fitting of the dampener assembly. Workers tightened all bolts to standard torque, replaced worn washers, and the vibration and abnormal noise were completely eliminated, avoiding pipeline damage.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these pulsation dampener parts compatible with all four Lanzhou LS 3NB series pump models? | Yes, all parts in this catalog are universally designed for 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pumps, with uniform dimensions and interfaces, no need to customize parts for separate models. |
| What is the standard pressure range for the Y-100 pressure gauge matched with the dampener? | The matched pressure gauge is Y-100 type, with a measuring range of 0-10MPa (2.5 accuracy class), which is fully compatible with the working pressure of the four models of pulsation dampeners, realizing real-time and accurate air pressure monitoring. |
| How often should the sealing O-rings and gaskets be replaced? | Under normal drilling working conditions, it is recommended to replace sealing O-rings and gaskets every 2800-3000 working hours; if in harsh corrosive environment, the replacement cycle should be shortened to 2000 working hours to avoid air leakage failure. |
Procurement Guidance
This Lanzhou LS 3NB series mud pump pulsation dampener parts list is a professional and reliable reference for drilling equipment management and maintenance teams, providing complete, standardized and high-quality spare parts solutions for on-site maintenance and inventory preparation. Using these OEM-standard replacement parts can not only quickly solve pulsation dampener faults, but also effectively reduce the frequency of repeated failures, lower equipment maintenance costs, and ensure continuous and stable operation of mud pumps.
