Equipment Operations
Oilfield drilling and well control operations face relentless operational risks: unstable pressure monitoring triggering system shutdowns, worn BOP ram seals causing pressure leaks and safety hazards, faulty hydraulic/HPU valves disrupting brake and carrier systems, and ill-fitting fasteners/wear parts leading to unplanned downtime. This premium lineup of drilling and hydraulic components is engineered to eliminate these pain points, serving BOP maintenance technicians, HPU service crews, drilling rig engineers, well control specialists, and oilfield procurement managers working with Rongsheng 2FZ35-35 BOP units, YZ096/YZ311.00 HPU systems, ZJ30 carrier hydraulic systems, Parker PTO units, and standard drill collar handling equipment. Every part is manufactured to strict OEM-equivalent tolerances, ensuring perfect fit, long service life, and compliance with API 53 and global oilfield safety standards.
Core Purpose Statement (Equipment-Specific & Demand-Aligned)
This comprehensive range of oilfield spare parts delivers reliable pressure control, leakproof BOP sealing, stable hydraulic actuation, and secure drill collar handling for high-pressure well control and drilling operations. The 78187087 NOV pressure switch enables precise pressure monitoring for electrical control systems; Rongsheng BOP seals provide 5000 PSI leakproof sealing for variable/pipe ram assemblies; IA-265 control air valves and YZ series electromagnetic/pneumatic valves regulate stable HPU and disc brake operation; Parker 852XBAKP-F4XS PTO units power drilling machinery; and drill collar safety slips/clamps secure heavy drilling components to prevent rig accidents. Backed by 99.3% field fitment accuracy and 28,000-hour durability testing, these parts reduce maintenance costs by 42% and cut unplanned rig downtime by 60% compared to generic alternatives.
Detailed Product Description & Technical Specifications
1. Product Introduction
This curated portfolio features high-criticality wear and control components for onshore/offshore drilling rigs, blowout preventer (BOP) systems, hydraulic power units (HPU), and drilling auxiliary equipment. Key products include the NOV 78187087 pressure switch (15A electrical rating), Rongsheng 2FZ35-35 BOP ram seals (RS11172.16 series), IA-265 control air valves, YZ series explosion-proof HPU valves, Parker 852XBAKP-F4XS PTO units, precision bearings, mud deflectors, and multi-size drill collar safety slips. Each part is crafted from premium-grade materials, undergoes 3-stage pressure and wear testing, and serves as a direct drop-in replacement for worn OEM components, simplifying installation and reducing rig maintenance labor time.
2. Functional Specifications
• NOV 78187087 Pressure Switch (1950-10-2F): 15A electrical rating; precise pressure actuation; anti-flicker circuitry; compatible with drilling control panels; triggers safety alarms at preset pressure thresholds to prevent system overload.
• Rongsheng BOP Seals (RS11172.16/RJ11172.15 Series): 5000 PSI pressure rating; leakproof sealing for 13-5/8″ BOP units; fits 2-7/8″-5″ variable/pipe rams; oil/mud-resistant elastomer; maintains seal integrity under high-pressure well conditions.
• Hydraulic Control Valves: IA-265 control air valve for precision air regulation; YZ311.00 explosion-proof electromagnetic reversing valve for disc brake HPU; YZ.100S-096 pneumatic reversing/protection valves; anti-corrosion internal components for harsh HPU environments.
• PTO & Mechanical Components: Parker 852XBAKP-F4XS PTO unit (90901701, old P/N 7032B196); high-load deep groove/plain bearings; precision shaft retaining/stop rings; mud deflectors for LWCV assemblies; spool spacers for 13 5/8″ 10K BOP units.
• Drilling Safety Tools: MP-S/MP-R/MP-M/MP-L drill collar safety slips; 4-1/2″ REG box-type lifting caps; A20-DA53 sextuplet valve for ZJ30 carrier hydraulic systems; secure locking mechanisms to prevent component slippage.
3. Structural & Material Features
• Sealing Components: High-performance nitrile-based elastomer with 85 Shore A hardness; reinforced fabric layers for tear resistance; precision-molded profiles for 360° contact with BOP rams.
• Valve & Switch Parts: Forged aluminum alloy valve bodies; stainless steel internal spools; explosion-proof enclosures for electrical components; dust/mud-proof seals to protect internal mechanisms.
• Mechanical Parts: High-carbon steel bearings and rings; heat-treated alloy steel for safety slips; precision CNC machining for 0.001-inch dimensional tolerances; corrosion-resistant black oxide finish.
• Safety Tools: Quick-release locking design; non-slip gripping jaws; adjustable sizing for multiple drill collar diameters; lightweight yet heavy-duty construction for rig portability.
4. Applicable Operating Conditions
These parts are engineered for the harshest oilfield well control and drilling environments:
- Target Equipment: Rongsheng 2FZ35-35 5000 PSI BOPs, YZ096/YZ311.00 disc brake HPUs, ZJ30 carrier hydraulic systems, Parker 852XBAKP-F4XS PTO drives, standard drilling rigs
- Pressure Ratings: Up to 10,000 PSI for BOP spool spacers; 5000 PSI for BOP seals; medium-pressure for HPU hydraulic valves
- Environmental Limits: Operating temperatures -30°F to 260°F, resistance to drilling mud, crude oil, hydraulic fluid, and rig vibration
- Usage Scenarios: Well control operations, BOP maintenance, HPU system repair, drill collar handling, rig power transmission, disc brake actuation
5. Maintenance & Upkeep Recommendations
• BOP Seals: Inspect for cracks, hardening, or mud buildup every 150 drilling hours; replace seals at the first sign of leakage; lubricate seal surfaces with compatible hydraulic grease prior to installation.
• Valves & Pressure Switches: Calibrate 78187087 pressure switches quarterly; clean valve air/hydraulic passages every 200 hours; test explosion-proof valve enclosures for integrity semi-annually.
• Mechanical Components: Lubricate bearings and slip mechanisms every 100 hours; check retaining/stop rings for wear monthly; replace worn filter elements for YZ096.00 HPU to prevent contamination.
• Installation Protocols: Torque all fasteners to OEM specifications; align seals and spacers precisely to avoid uneven wear; store elastomer seals in a cool, dark area to prevent premature degradation.
We supply the following spare parts:
PRESSURE SWITCH NOV p/no 78187087, ELECTRICAL RATING 15A DWER PART NUMBER 1950-10-2F |
CONTROL AIR VALVE P/N.IA-265 (P50493-003) H-2-X R431002640 |
90901701 , POWER TAKE OFF ( OLD P/N 7032B196 ) PARKER MODEL 852XBAKP-F4XS |
PC-DC SLIDE FOR CB 0509-1200-03 |
FRONT SEAL, 2-7/8″-5″ VARIABLE RAM, FOR BOP 13-5/8″ 5000 PSI, MODEL: 2FZ35-35, MAKE: RONGSHENG, P/N: RS11172.16.02 |
TOP SEAL FOR VBR RAM RUBBER SET SIZE 2-7/8″-5″ FOR 13 5/8″ X 5000 PSI DBL RAM BOP, RONGSHENG 2FZ 35, P/N: RS11172.16.03 |
TOP SEAL FOR 2-7/8″ PIPE RAM, TYPE – HF, FOR 13 5/8″ X 5000 PSI RAM BOP. MAKE – RONGSHENG., P/N: FZ897.21.01.01 |
LOWER RAM SEAL, RONGSHENG MACHINERY MANF LTD OF HAUBEI OILFIELD,MDL:5K RONGSHENG, P/N: RJ11172.15.04 |
UPPER RAM SEAL, RONGSHENG MACHINERY MANUFACTURE LTD, MDL: 5K RONGSHENG, P/N: RJ11172.15.02 |
FILTER ELEMENT, OIL RETURN, FOR HPU, MODEL: YZ096.00 |
REVERSING VALVE, ELECTROMAGNETIC, EXPLOSION-PROOF, FOR DISK BRAKE HPU, MODEL: YZ311.00 |
BRG, BALL DEEP GROOVE M10249 |
BRG, PLAIN, 9.00 x 9.187 x 0.75 M02-1041-010 |
RETG RING, EXT, 8.5 SHAFT, 0.187 THK M10168 |
RING, STOP, ACTUATOR, LWCV, 8.45 IN DT13643 |
DEFLECTOR, MUD, LWCV, 8.45 IN DT13685 |
REVERSING VALVE PNEUMATIC FOR DISC BRAKE HPU MODEL: YZ.100S-096 |
PROTECTION VALVE MIS-OPERATION FOR DISC BRAKE HPU MODEL: YZ.100S-096 |
Spool spacer 13 5/8″ 10k by 13 5/8 10k |
SEXTUPLET VALVE COMPONENT, F/CARRIER HYD SYSTEM, MODEL- ZJ30, MAKE: SJ PETRO, P/N-A20-DA53 |
LIFTING CAP BOX TYPE 4 1/2″ REG |
DRILL COLLAR SAFETY SLIPS MODEL: MP-S, MP-R, MP-M, MP-L ,(SAFETY CLAMP) |
On-Site Field Fault Repair Cases
Case 1: BOP Ram Seal Leakage During Well Testing
Issue: A Rongsheng 2FZ35-35 BOP exhibited 5000 PSI pressure leakage during well testing, halting operations. Root Cause: Worn front seal (RS11172.16.02) and degraded upper ram seal due to prolonged mud exposure. Solution: Replace RS11172.16.02 front seal and RJ11172.15.02 upper ram seal, torque ram assembly to OEM specs.Outcome: Full pressure integrity restored, zero leakage in subsequent testing, operations resumed within 2 hours.
Case 2: HPU Disc Brake Failure From Faulty Valve
Issue: A YZ.100S-096 disc brake HPU failed to actuate, creating rig safety risks.Root Cause: Stuck pneumatic reversing valve and clogged oil return filter element (YZ096.00) causing hydraulic flow blockage. Solution: Replace pneumatic reversing valve and YZ096.00 filter element, flush HPU hydraulic lines. Outcome: Smooth brake actuation restored, no recurrent failures in 8 months of use.
Case 3: Drill Collar Slippage Due to Worn Safety Slips
Issue: A drilling rig experienced drill collar slippage during tripping, endangering rig crew. Root Cause: Worn gripping jaws on MP-M safety slips, unable to secure the collar firmly. Solution: Replace with new MP-M drill collar safety slips, adjust locking mechanism for tight fit. Outcome: Secure collar retention, no slippage incidents in follow-up operations.
Frequently Asked Questions (FAQ)
Question | Answer |
Are Rongsheng RS11172.16 series seals compatible with all 13-5/8″ 5000 PSI BOPs? | These seals are custom-designed for Rongsheng 2FZ35-35 13-5/8″ 5000 PSI BOPs, fitting 2-7/8″-5″ variable/pipe rams perfectly. Verify your BOP model and ram size prior to ordering for full compatibility. |
Is the NOV 78187087 pressure switch a direct replacement for DWER 1950-10-2F? | Yes, the 78187087 pressure switch is a direct OEM-equivalent replacement for DWER 1950-10-2F, with matching 15A electrical rating and mounting dimensions for seamless installation. |
What size drill collars do the MP-S/MP-R/MP-M/MP-L safety slips fit? | The MP series slips cover standard drill collar sizes: MP-S (small), MP-R (regular), MP-M (medium), MP-L (large), accommodating most common oilfield drill collar diameters for secure rig handling. |
Closing Section: Procurement Guidance & Operational Assurance
Procurement Call to Action
Secure high-quality, OEM-equivalent oilfield BOP, HPU, and drilling components to enhance well control safety, minimize rig downtime, and reduce long-term maintenance expenses. Our NOV pressure switches, Rongsheng BOP seals, YZ series hydraulic valves, and drill collar safety tools are manufactured to strict API and industry standards, with exact part number matching for hassle-free ordering. Each product includes detailed technical datasheets to support proper installation, calibration, and maintenance, ensuring reliable performance in high-pressure drilling environments. Submit your specific part number or equipment model inquiry today to access customized bulk pricing, technical compatibility support, and streamlined procurement services tailored to your oilfield operational needs.
Procurement & Technical Reference Standards
For accurate procurement and troubleshooting, reference official part numbers (78187087, RS11172.16.02, IA-265, YZ311.00), equipment model specifications (2FZ35-35 BOP, YZ.100S-096 HPU, Parker 852XBAKP-F4XS PTO), pressure ratings, and dimensional tolerances. Adhere to API 53 well control standards for BOP components and industry hydraulic safety protocols for HPU valves. Use the included maintenance guidelines and field repair cases as a technical reference to diagnose and resolve common equipment failures, and retain all product specification documents for compliance audits and quality tracking. All parts are engineered to align with standard rig installation practices and safety requirements for consistent, reliable operation.