Detailed Product Introduction
This Guangzhou Dongsu accumulator parts collection covers all mission-critical high-pressure hydraulic, pneumatic, and sealing components for the accumulator’s core operating systems, with cross-referenced Dongsu OEM part numbers for exact drop-in fit. The catalog includes air pressure gauges, regulators, high-pressure relief/check valves, burst discs, liquid filters, plunger rods, V-type packing seals, O-rings, bushings, and specialized fasteners. Parts are curated to address the highest-failure zones of Dongsu accumulators: pressure monitoring, hydraulic sealing, fluid control, and plunger actuation, ensuring full compatibility with standard Dongsu accumulator modules and BOP test pump assemblies.
Functional Performance & Value Highlights
- Extreme High-Pressure Resistance: Relief valves, burst discs, and sealing components rated for 7250PSI/250MPa operation, maintaining integrity under peak BOP control system pressure.
- Zero Leakage Sealing: Premium V-type packing and O-rings (GB1235-76 standard) prevent hydraulic fluid loss, preserving accumulator pressure stability.
- Precision Pressure Regulation: Calibrated air regulators and pressure gauges ensure accurate pneumatic/hydraulic pressure control, critical for safe BOP operation.
- Contamination Protection: High-efficiency liquid filters trap particulate matter, extending the service life of internal accumulator components by 70%.
Structural & Engineering Features
- OEM Drop-In Fit: All components match Dongsu accumulator mounting and connection specifications, requiring no custom modifications for field installation.
- API 16D Compliance: High-pressure valves and sealing parts meet industry safety standards for BOP control systems, ensuring global regulatory adherence.
- Wear-Resistant Materials: Plungers, bushings, and valve seats use hardened alloy materials to resist abrasion from hydraulic fluid, reducing replacement frequency.
- Wide Temperature Tolerance: Components operate reliably in -20°C to 65°C wellsite environments, maintaining performance in extreme climate conditions.
Applicable Operating Conditions
These Guangzhou Dongsu accumulator spare parts are engineered for demanding oilfield hydraulic control environments, with ideal use cases including:
- Routine maintenance, emergency repairs, and full overhauls of Guangzhou Dongsu hydraulic accumulators
- FKQ series BOP control systems for onshore drilling and workover rigs
- High-pressure hydraulic test pump assemblies (BOP testing applications)
- API-compliant well control systems requiring certified high-pressure hydraulic components
Professional Maintenance & Troubleshooting Recommendations
- Seal Inspection & Replacement: Replace V-type packing and O-rings every 4,000 operating hours to prevent hydraulic leakage and pressure loss.
- Pressure Component Testing: Calibrate pressure gauges and test relief valves quarterly to ensure accurate pressure regulation and overpressure protection.
- Filter Maintenance: Clean or replace liquid filters every 2,000 hours to prevent fluid contamination and component clogging.
- Valve Function Checks: Inspect check valves and stop valves for sticking or leakage every 6 months; replace faulty units to maintain fluid flow control.
- Scheduled Overhaul: Conduct a full Dongsu accumulator overhaul (seals, valves, plungers, filters) every 30,000 operating hours to prevent catastrophic pressure failure.
We supply the following spare parts:
| Item No | UOM | Description | Manufacturer | Manufacturer Part No |
| 1 | each | Air SourcePressure Gauge | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | Y-60/0-2.5 |
| 2 | each | Air Pressure Regulator | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QAR5000-04 |
| 3 | each | Regulated Air Pressure Gauge | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QG46-10-02 |
| 4 | each | Liquid filter | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | 1″DLQ-00 |
| 5 | each | Valve, Relief,Opening Pressure:7250PSI | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | YLF50-00 |
| 6 | each | Valve, Check | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | DLF5/16inch-00 |
| 7 | each | Burst Disc | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QS-24-00 |
| 8 | each | Maintaining Stop Valve | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | 200GF6-00 |
| 9 | each | Pressure Gauge | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | Y-200/2-250MPa |
| 10 | each | Bushing | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | 150QMD-00-12 |
| 11 | each | Inner-Stud bolt | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | 150QMD-00-38 |
| 12 | each | Rod, Plunger | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-01 |
| 13 | each | Washer, Packing | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-02 |
| 14 | each | Packing, V-Type | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-03 |
| 15 | each | Washer, Packing | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-04 |
| 16 | each | Seal, Ring, V-Type | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-09 |
| 17 | each | 16mm Still Ball | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | |
| 18 | each | Seat, Valve, Suction | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB6-14 |
| 19 | each | Plunger | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB20-01 |
| 20 | each | EGO Ring | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | 13X24X28 |
| 21 | each | Washer, Packing | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB20-04 |
| 22 | each | Plunger Bushing | Guangshou Dongsu Petrolium D&E Equipment Co.,LTD | QB20-07 |
| Requisition | Line | Item Description | UOM |
| 73688 | 1 | TRIP SPRING MFG:-DONGSU P/N# 150QMD-00-06 | EACH |
| 73688 | 2 | GASKET, FOR BOP TEST PUMP – MFG: DONGSU-PN:QM1934 | EACH |
| 73688 | 3 | O-RING, 193 X 8 FOR BOP TEST PUMP – MFG: DONGSU-PN:QM1935 | EACH |
| 73688 | 4 | SPRING, DIRECTION CHANGE – MFG: MOPC P/N#150QMD0022 | EACH |
| 73688 | 5 | SINGLE ROD MFG:-DONGSU P/N# 150QMD-00-23 | EACH |
| 73688 | 6 | V SHAPE PACKING MFFG# GUANGZHOU P/N# QB6-03 | EACH |
| 73688 | 7 | O’RING MFG:-DONGSU P/N# GB1235-76 28X3.1 | EACH |
| 73688 | 8 | O’RING MFG:-DONGSU P/N# GB1235-76 90X3.1 | EACH |
| 73688 | 9 | O’RING MFG:-DONGSU P/N# GB1235-76 50X3.1 | EACH |
| 73688 | 10 | O-RING MFG:-DONGSU P/N# GB1235-76 22X2.4 | EACH |
| 73688 | 11 | O’RING MFG:-DONGSU P/N# GB1235-76 50X3.1 | EACH |
| 73688 | 12 | O-RING,25X2.4 MFFG# GUANGZHOU P/N# GB1235-76-25-2.4 | EACH |
| 73688 | 13 | BACK UP RINGS . MFG# GUANGZHOU. P/N# SDTYF-00-08. | EACH |
| 73688 | 14 | SEAL CONTAINER , MFG# GUANGZHOU, P/N# SDTYF -00-17. | EACH |
| 73688 | 15 | SEAL RING VENT,MFG # GUANGZHOU, P/N# SDTYF-00-12 | EACH |
| 73688 | 16 | SEAL RING SUPPLY, MFG # GUANGZHOU, P/N# SDTYF-00-16. | EACH |
| 73688 | 17 | O-RING GB1235-76 54MM X 3.54MM, MFG# GUANGZHOU, P/N# GB1235-76 5MM x 3.5MM | EACH |
| 73688 | 18 | FLOW PLATE VENT ,MFG # GUANGZHOU. P/N# SDTYF -00-25. | EACH |
| 73688 | 19 | O RING GB1235-76 ,40MM X 3.5MM . MFG# GUANGZHOU, P/N# GB1235-76 40MM x 3.5MM | EACH |
| 73688 | 20 | O-RING 11×1.9 – MFG: BOMCO – P/N# GB1235-76-11×1.9 | EACH |
| 73688 | 21 | SLEEVE, SHUTTLE – MFG: OPC – P/N#150QMD0005 | EACH |
Field Guangzhou Dongsu Accumulator Fault Repair Cases
Case 1: V-Type Packing Seal Leakage
A Dongsu accumulator experienced severe hydraulic fluid leakage due to worn V-type packing (P/N QB6-03). Replacing the OEM sealing kit eliminated leakage and restored full accumulator pressure retention.
Case 2: 7250PSI Relief Valve Failure
Uncontrolled hydraulic pressure spikes occurred due to a faulty high-pressure relief valve (P/N YLF50-00). Installing the OEM relief valve restored safe pressure regulation and protected BOP system components.
Case 3: Clogged Liquid Filter Reduced Flow
Restricted hydraulic fluid flow caused slow BOP operation, traced to a clogged 1″ liquid filter (P/N DLQ-00). Fitting the OEM filter restored proper fluid circulation and accumulator response time.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts exclusively compatible with Guangzhou Dongsu accumulators? | Yes, all spare parts are custom-designed and calibrated solely for Guangzhou Dongsu hydraulic accumulators, with OEM-matched part numbers and dimensions for perfect fit. |
| Do these components meet API 16D safety standards for BOP systems? | Absolutely, high-pressure valves, burst discs, and sealing parts comply with API 16D and ASME standards, safe for use in critical well control applications. |
| Can these seals and O-rings withstand 7250PSI hydraulic pressure? | Yes, all sealing components are engineered to handle the full 7250PSI operating pressure of Dongsu accumulators, ensuring zero leakage under peak load. |
Procurement Guidance & Call to Action
For hydraulic technicians, BOP maintenance crews, and oilfield procurement teams relying on Guangzhou Dongsu accumulators and FKQ series BOP control systems, this parts list is the definitive resource to minimize unplanned rig downtime, uphold API 16D safety standards, and source guaranteed OEM-compatible components. Avoid the risks of substandard generic parts, hydraulic pressure loss, and well control hazards — this catalog provides a standardized procurement benchmark and technical repair reference for all critical Dongsu accumulator parts.
Secure these high-quality, factory-calibrated Guangzhou Dongsu accumulator spare parts to execute fast, reliable on-site repairs, maintain stable BOP control system pressure, and protect your valuable well control equipment from premature failure. Each component is built to withstand the harsh conditions of 24/7 oilfield operations, making this the trusted supply reference for keeping your Dongsu accumulator operating at peak safety and reliability.
