Core Purpose Statement
This guide covers hydraulic components for the surface mounted BOP (Blowout Preventer) stacks control system produced by Beijing Petroleum Machinery, including pressure reducing valves, control valves, relief valves, pumps, and pressure switches. These components are specifically engineered to match surface mounted BOP stacks of onshore and offshore drilling rigs (e.g., 13-5/8" 10,000psi BOP stacks, 18-3/4" 15,000psi BOP stacks). Targeted at oil & gas drilling companies, offshore engineering firms, and drilling equipment maintenance service providers, they address core needs for reliable pressure control, precise hydraulic actuation, and safe emergency response of BOP stacks in harsh drilling environments (high pressure, high vibration, corrosive media). Fully compliant with API Spec 16D 2nd Edition and SY/T 5053.2-2007 (IDT with API Spec 16D:2004), these components eliminate risks of BOP control system failure, ensuring drilling operations meet international safety standards and preventing blowout accidents.
Product Classification & Detailed Specifications
All components comply with API Spec 16D 2nd Edition《Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment》and SY/T 5053.2-2007《Specification for control systems for drilling well control equipment and control systems for diverter equipment》（API Spec 16D：2004，IDT）.
1. Pressure Reducing & Regulating Valves
Designed for precise pressure control in BOP stack hydraulic control systems, these valves resolve issues of unstable pressure output and poor pressure regulation accuracy in high-pressure drilling environments. Critical for supplying stable pressure to BOP actuation mechanisms (ram cylinders, annular BOPs), they ensure smooth and reliable operation of BOP components. Their robust construction and pressure compensation design guarantee consistent performance under fluctuating input pressure conditions. (79 words)
Product No. | Product Model | Material | Main Wear Reasons | Damage Prevention Notes |
1 | JYS21-25 Pressure reducing and regulating valve | 316L stainless steel valve body; 40CrNiMoA alloy steel valve core; PTFE sealing ring; Hastelloy C-276 pressure sensing element | 1. Valve core wear caused by sand and particulate contamination in hydraulic oil from drilling mud intrusion; 2. Pressure sensing element drift due to long-term exposure to high-temperature drilling fluid (exceeding 120℃) | 1. Install a 5μm high-precision oil filter with differential pressure alarm upstream; replace hydraulic oil every 1500 drilling hours and clean the filter element; 2. Insulate the valve body from high-temperature drilling fluid pipelines; monitor operating temperature and ensure it does not exceed 100℃ (rated temperature) |
2 | JYSQ21-25B Air/Manual Operate regulating Valve | 316L stainless steel valve body; 40CrNiMoA alloy steel valve core; fluororubber sealing ring; aluminum alloy manual operation handle; stainless steel air actuator | 1. Air actuator internal corrosion caused by moisture in compressed air; 2. Valve core jamming due to infrequent manual operation (emergency backup mode) leading to rust accumulation | 1. Install an air dryer and oil-water separator in the compressed air line; drain moisture from the air system daily; 2. Operate the manual handle fully (open-close cycle) every 72 drilling hours to prevent rust jamming; apply anti-rust lubricant to the handle mechanism monthly |
2. Directional Control Valves
Engineered for precise hydraulic circuit switching in BOP stack control systems, directional control valves resolve issues of slow response and internal leakage in emergency BOP actuation scenarios. Essential for controlling the opening and closing of BOP rams and annular preventers, they ensure rapid and reliable response to blowout prevention signals. Their high-flow design and anti-shock structure adapt to the high-vibration drilling environment, guaranteeing stable operation during drilling rig startup and shutdown. (78 words)
Product No. | Product Model | Material | Main Wear Reasons | Damage Prevention Notes |
1 | 23ZS21-25D Two-position and three-way valve | Gray cast iron (HT250) valve body with anti-corrosion coating; 45# carbon steel valve core (hard chrome plated); nitrile rubber sealing ring; zinc-plated steel solenoid core | 1. Valve core wear caused by hydraulic oil oxidation and sludge accumulation in long-term continuous operation; 2. Sealing ring damage due to pressure surges from BOP emergency actuation | 1. Use anti-oxidation hydraulic oil (acidity value ≤0.2mgKOH/g); check oil quality quarterly and replace if oxidized; 2. Install a pressure surge absorber upstream; set the absorber pressure 10% lower than the valve's maximum allowable pressure |
2 | 34Z21-25 Three-position four-way control valve | Gray cast iron (HT250) valve body with anti-corrosion coating; 40Cr alloy steel valve core (hard chrome plated); nitrile rubber sealing ring; steel operation handle | 1. Handle connection loosening caused by high vibration of drilling rig during operation; 2. Internal leakage due to wear of valve core guide sleeve | 1. Use lock nuts with anti-vibration washers for handle connection; retighten with torque wrench (torque: 8-10N·m) weekly; 2. Check the fit clearance between valve core and guide sleeve semi-annually (allowable clearance 0.01-0.02mm); replace guide sleeve if worn |
3 | 34ZS21-40 Three-position four-way control valve | Gray cast iron (HT250) valve body with anti-corrosion coating; 40Cr alloy steel valve core (hard chrome plated); nitrile rubber sealing ring; steel operation handle | 1. Valve body deformation caused by uneven mounting surface stress on the drilling rig control panel; 2. Valve core jamming due to foreign particles (drilling dust) entering the valve body | 1. Machine the mounting surface to flatness ≤0.02mm/m; use a rubber gasket to absorb vibration and distribute stress; 2. Install a dust-proof cover on the valve body; clean the valve exterior and air vents daily to prevent dust ingress |
4 | 34ZR6Y-L8 Three-position four-way air valve | Aluminum alloy (6061-T6) valve body; 304 stainless steel valve core; EPDM rubber sealing ring; aluminum alloy air actuator | 1. Air actuator leakage caused by wear of piston seal; 2. Valve core corrosion caused by salt spray in offshore drilling environments | 1. Inspect piston seal monthly for wear; replace with fluororubber seal for offshore use; 2. Apply anti-salt spray coating to the valve body and actuator for offshore applications; rinse with fresh water weekly to remove salt deposits |
5 | 34ZR6Y-L8A Three-position four-way air valve | Aluminum alloy (6061-T6) valve body; 304 stainless steel valve core; EPDM rubber sealing ring; aluminum alloy air actuator | 1. Solenoid valve failure caused by voltage fluctuation in the drilling rig electrical system; 2. Sealing ring hardening due to low temperature in onshore cold region drilling | 1. Install a voltage stabilizer in the solenoid valve power supply line; check voltage weekly (allowable fluctuation ±5%); 2. Replace EPDM seals with low-temperature resistant silicone rubber seals (operating temperature ≥-40℃) for cold region use |
3. Pressure Switches & Safety Relief Valves
Tailored for safety protection and pressure monitoring in BOP stack control systems, these components resolve issues of overpressure damage and pressure monitoring inaccuracy. Pressure switches trigger emergency alarms or shutdowns when pressure deviates from the safe range, while relief valves prevent system overpressure. Their high-precision sensing and reliable relief mechanisms are critical for safeguarding BOP control system components and ensuring drilling safety. (76 words)
Product No. | Product Model | Material | Main Wear Reasons | Damage Prevention Notes |
1 | QKY21-25 Hydro-pneumatic pressure switch | 316L stainless steel housing; copper alloy diaphragm; PTFE sealing ring; stainless steel adjustment knob | 1. Diaphragm fatigue and rupture caused by frequent pressure fluctuations in the BOP control system; 2. Pressure setting drift due to vibration of the drilling rig | 1. Install a pressure buffer upstream to reduce pressure fluctuation amplitude (≤±5% of set pressure); 2. Lock the adjustment knob with a lock nut after calibration; recheck and recalibrate the pressure setting weekly |
2 | Y40-20 Relief valve | 316L stainless steel valve body; 40Cr alloy steel valve core; fluororubber sealing ring; stainless steel spring | 1. Valve core wear caused by high-velocity fluid scouring during relief operations; 2. Spring fatigue and deformation due to long-term exposure to high temperature | 1. Ensure the relief valve is sized correctly to avoid excessive flow velocity (≤15m/s); 2. Monitor operating temperature; replace the spring with a high-temperature resistant alloy spring (rated temperature ≥150℃) if needed; inspect spring deformation quarterly |
3 | Y25-20B Relief valve | 316L stainless steel valve body; 40Cr alloy steel valve core; fluororubber sealing ring; stainless steel spring | 1. Sealing ring leakage caused by contamination of hydraulic oil with drilling mud particles; 2. Valve body corrosion caused by acidic drilling fluid splashes | 1. Install a 3μm ultra-precision oil filter upstream; clean the filter element every 500 drilling hours; 2. Install a protective cover to prevent drilling fluid splashes; wipe the valve body with neutral detergent monthly to remove acid residues |
4 | Y25-20C Relief valve | 316L stainless steel valve body; 40Cr alloy steel valve core; fluororubber sealing ring; stainless steel spring | 1. Relief pressure inaccuracy caused by spring corrosion in humid drilling environments; 2. Valve core jamming due to long-term inactivity (standby mode) | 1. Apply anti-corrosion grease to the spring; inspect for corrosion quarterly and replace if necessary; 2. Perform a test relief operation monthly (at 80% of set pressure) to keep the valve core moving freely |
4. Hydraulic & Pneumatic Pumps
Designed as power sources for BOP stack hydraulic control systems, these pumps resolve issues of insufficient output pressure, low flow rate, and poor reliability in harsh drilling environments. Triplex pumps and air-operated oil pumps provide stable hydraulic power for BOP actuation, ensuring rapid response during emergency operations. Their robust crankshaft design, wear-resistant components, and anti-vibration mounts adapt to continuous drilling operations, guaranteeing long-term reliable power supply. (77 words)
Product No. | Product Model | Material | Main Wear Reasons | Damage Prevention Notes |
1 | Triplex pump | Cast steel (WCB) pump body; 40CrNiMoA alloy steel crankshaft; ceramic plungers; PTFE piston seals; stainless steel valves | 1. Plunger wear caused by contaminated hydraulic oil with hard particles; 2. Crankshaft bearing damage due to insufficient lubrication | 1. Use hydraulic oil with cleanliness grade NAS 7 or higher; replace the oil filter element every 1000 drilling hours; 2. Check lubricating oil level and quality daily; replace lubricating oil every 2500 drilling hours; use high-pressure anti-wear lubricating oil (ISO VG68) |
2 | QYB50-60L Air operated oil pump | Aluminum alloy (6061) pump body; 304 stainless steel piston; nitrile rubber seals; aluminum alloy air motor | 1. Air motor wear caused by moisture and oil contamination in compressed air; 2. Pump body overheating due to high back pressure in the BOP control system | 1. Install an air filter, oil-water separator, and lubricator (three-in-one) in the compressed air line; drain moisture daily; 2. Monitor system back pressure; ensure it does not exceed 80% of the pump's maximum discharge pressure; clean the relief valve monthly to prevent blockage |
3 | QYB40-165L Air operated oil pump | Aluminum alloy (6061) pump body; 304 stainless steel piston; nitrile rubber seals; aluminum alloy air motor | 1. Piston seal leakage caused by long-term high-frequency operation; 2. Pump inlet blockage caused by hydraulic oil oxidation sludge | 1. Replace piston seals every 2000 operating hours; use fluororubber seals for high-temperature environments; 2. Clean the pump inlet filter monthly; replace hydraulic oil every 1500 drilling hours; add an anti-oxidation additive if needed |
4 | QYB8-350L Air operated oil pump | Aluminum alloy (6061) pump body; 304 stainless steel piston; nitrile rubber seals; aluminum alloy air motor | 1. Air motor stall caused by low compressed air pressure; 2. Pump body corrosion caused by salt spray in offshore drilling | 1. Ensure compressed air pressure is within 0.4-0.6MPa (rated range); install a pressure gauge at the pump inlet to monitor pressure; 2. Apply anti-salt spray coating to the pump body and air motor for offshore use; inspect for corrosion monthly |
5. Pneumatic Motor Pressure Control Valves
Optimized for pressure control of pneumatic motors in BOP stack auxiliary systems (e.g., pump drive motors), these valves resolve issues of unstable motor speed and overpressure damage. They regulate air pressure to the pneumatic motor, ensuring consistent motor performance and preventing motor burnout due to overpressure. Their compact design and corrosion-resistant materials adapt to the confined space and harsh environment of drilling rig control rooms. (76 words)
Product No. | Product Model | Material | Main Wear Reasons | Damage Prevention Notes |
1 | JYSM21-25 Pneumatic motor pressure control valve | 304 stainless steel valve body; brass valve core; EPDM rubber sealing ring; aluminum alloy adjustment handle | 1. Valve core wear caused by dust and particulate contamination in compressed air; 2. Adjustment handle loosening caused by drilling rig vibration | 1. Install a 10μm air filter upstream; replace the filter element monthly; 2. Use a lock nut to secure the adjustment handle after setting; check and retighten weekly |
2 | JYSM21-40 Pneumatic motor pressure control valve | 304 stainless steel valve body; brass valve core; EPDM rubber sealing ring; aluminum alloy adjustment handle | 1. Sealing ring damage caused by oil contamination in compressed air; 2. Valve body corrosion caused by acidic gases in the drilling environment | 1. Ensure the compressed air line lubricator is properly adjusted (oil injection rate 1-2 drops per minute); avoid excessive oil injection; 2. Apply anti-corrosion coating to the valve body; wipe with neutral detergent monthly to remove acid residues |
Procurement & Technical Reference Standards
1. Procurement Reference Standards
Certification Compliance: Prioritize products that fully comply with API Spec 16D 2nd Edition and SY/T 5053.2-2007 (IDT with API Spec 16D:2004). Ensure the manufacturer (Beijing Petroleum Machinery) provides API 16D product certification and material test reports (e.g., 316L stainless steel meets ASTM A240, alloy steel meets ASTM A193).
Parameter Matching: Confirm the component's rated pressure (≥15,000psi for high-pressure BOP stacks, ≥10,000psi for medium-pressure stacks), rated flow (match the BOP actuation flow requirement), nominal diameter (compatible with the control system pipe diameter), and temperature range (-40℃ to 120℃ for most drilling environments). Verify the connection type (flange/thread) matches the BOP control system interface.
Environmental Adaptability: For offshore drilling, select components with IP66 or higher protection class, anti-salt spray coating, and corrosion-resistant materials (316L stainless steel, Hastelloy). For onshore cold regions, choose components with low-temperature resistant seals (silicone rubber) and hydraulic oil (pour point ≤-40℃). For high-vibration areas, select components with anti-vibration mounts and lockable adjustment mechanisms.
Quality & Reliability: Verify the component's service life (≥5 years under normal drilling conditions), fatigue resistance (≥100,000 cycles for valves), and leakage rate (≤1mL/min for hydraulic valves). Check the manufacturer's ISO 9001 quality management system certification and after-sales technical support capability (on-site maintenance, spare parts supply).
2. Technical Problem-Solving Reference Standards
Pressure Control Instability: For reducing/regulating valves, check for contaminated hydraulic oil, valve core wear, or pressure sensing element drift. Replace contaminated oil, clean the valve body, and recalibrate the sensing element. For pressure switches, verify the pressure setting and diaphragm condition; replace the diaphragm if worn. Install a high-precision filter to prevent recurrence.
Valve Leakage & Jamming: For internal leakage, inspect the valve core sealing surface and sealing ring for wear or damage; grind the sealing surface or replace the seal. For external leakage, check the connection threads/flanges and valve stem seal; re-tighten the connection or replace the stem seal. For jamming, disassemble the valve, remove foreign particles, and lubricate the moving parts with anti-rust lubricant.
Pump Performance Degradation: For insufficient pressure/flow, check for inlet blockage, worn plungers/seals, or air leakage in the air line (for air-operated pumps). Clean the inlet filter, replace worn plungers/seals, and repair air line leaks. For overheating, ensure proper lubrication and check for system back pressure; clean or replace the relief valve to reduce back pressure.
Solenoid/Air Actuator Failure: For solenoid failure, check the power supply voltage, wiring connections, and solenoid coil resistance. Repair loose connections, replace the voltage stabilizer if needed, and replace the solenoid coil if burned out. For air actuator failure, inspect the piston seal, air supply pressure, and moisture content; replace the seal, adjust the air pressure, and maintain the air dryer.
Procurement Invitation
The surface mounted BOP stacks control system hydraulic components from Beijing Petroleum Machinery, compliant with API Spec 16D 2nd Edition and SY/T 5053.2-2007, are engineered to deliver reliable, safe, and precise performance in the harshest oil & gas drilling environments. Whether you need components for onshore/offshore drilling rig BOP stacks, emergency well control operations, or drilling equipment maintenance, our comprehensive product range meets the strictest international safety and quality standards. Contact our professional sales team today to obtain detailed product data sheets, API certification documents, and competitive pricing. Our technical experts will provide personalized selection and installation recommendations based on your BOP stack specifications and drilling environment, supporting your safe and efficient drilling operations.
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