BOP & FKQ Series Spare Parts: 2FZ53-21, FZ35-70, FKQ640-7, FKQ8007 Supply

Introduction: Premium Spare Parts for Blowout Preventers & Remote Control Systems

We focus on supplying high-quality, OEM-compatible spare parts specifically designed for oilfield blowout preventers (BOP) and remote control systems (FKQ series), including core models such as 2FZ53-21, FZ28-35, FZ35-70, FZ54-14, FKQ640-7, FKQ6406, FKQ6407, FKQ8007, and FKQ12808BS. Our products are tailored to meet the细分 needs of oilfield drilling teams, well control engineers, equipment maintenance departments, and drilling contractors—addressing the most critical pain points in on-site operations, such as seal failure, valve leakage, pump malfunction, and unplanned downtime that threaten operational safety and efficiency.

Core Purpose: Our spare parts are engineered to ensure the safe, reliable, and continuous operation of BOP systems and FKQ remote control systems—critical components in oilfield well control and drilling operations. Whether you need a 2FZ53-21 ram rubber for 53×21 BOP, a FKQ640-7 air source processing element (AL4000-04), or a FKQ8007 flameproof magnetic starter (BQC83-40), each component undergoes strict quality testing to comply with API 16A (American Petroleum Institute) and ISO 9001 standards. We aim to minimize maintenance costs, extend equipment service life, and help you maintain compliance with oilfield safety regulations while avoiding costly operational interruptions.

Product Overview

Key Product Categories & Matching Equipment Models

Our product portfolio covers all critical spare parts for BOP systems and FKQ remote control systems, with precise compatibility for the following core equipment models. All parts are direct replacements, requiring no modifications to the original equipment:

• Blowout Preventer (BOP) Parts:适配 2FZ53-21 (53×21), FZ28-35 (28×35), FZ35-70 (35×70), FZ35×35, FZ54-14 (54×14), FH18-35 (18×35), 2FZ23-21 (23×21), including ram assemblies, ram rubber cores, piston seal rings, W-shaped sealing rings, front seals, side door sealing rings, bolts, and ram shafts.

• FKQ Remote Control System Parts:适配 FKQ640-7, FKQ6406, FKQ6407, FKQ8007, FKQ12808BS, including tracheal cable terminal board gaskets, air source processing elements (AL4000-04), pneumatic pump assemblies (JY1-10-4), filter regulators (QFH-261-0.6MPa), flameproof magnetic starters (BQC83-40), plungers (QB21-80), repair kits, air tube cables, globe valves (J13W-320P BPM), check valves, relief valves, and O-rings.

• Other Supporting Parts: Nitrogen capsules (N-80), nitrogen air bags (FK200-4 7MPa), accumulator capsules (80L), hydraulic control air valves (VSP-3301-31), pneumatic hoist operation boxes (ZJQD40T-A), and triple cylinder plunger pumps (QB-21.80) for three cylinder pumps.

Function Description

Each spare part plays a critical role in ensuring the integrity and performance of BOP and FKQ systems—directly supporting well control safety and drilling efficiency. Below are the core functions of key product categories:

BOP Seal & Ram Parts (Ram Rubber, Seal Rings, Front Seals)

These parts form the primary sealing barrier in BOP systems, preventing wellbore fluid (oil, gas, mud) from leaking during drilling and well control operations. For example, the 2FZ53-21 ram rubber (5″) and variable diameter ram rubber core (5′-5 1/2′) create a tight seal around the drill pipe, while the FZ54-14 W-shaped sealing ring (FZ897.1.12) and FZ35-70 front seal ensure no leakage from BOP side doors and connections. High-quality sealing parts are essential to avoid blowouts and ensure operational safety.

FKQ Pneumatic & Hydraulic Parts (Pumps, Valves, Air Source Elements)

These components power and control the BOP system, ensuring quick and precise operation during emergency well control. The FKQ6407 pneumatic pump assembly (JY1-10-4) provides stable air pressure to actuate BOP rams, while the FKQ640-7 air source processing element (AL4000-04) filters and regulates air supply to prevent contamination and valve damage. Globe valves (J13W-320P BPM) and check valves (A-40,15 9162300000) control fluid flow direction and pressure, ensuring reliable system performance.

Supporting Parts (Nitrogen Capsules, Accumulator Capsules, Starters)

Nitrogen capsules (N-80) and accumulator capsules (80L) store and release pressure to actuate BOP systems in emergency situations, providing backup power when needed. The FKQ8007 flameproof magnetic starter (BQC83-40) controls the operation of explosion-proof motors, ensuring safe operation in hazardous oilfield environments. These parts are critical for maintaining system redundancy and emergency response capabilities.

Structural Features

Our spare parts are designed with durability, compatibility, and safety in mind—specifically engineered to withstand the harsh conditions of oilfield operations. Key structural features include:

High-Performance Material Selection

BOP ram rubbers and seal rings are made of high-quality nitrile rubber (NBR) or fluorine rubber (FKM), which offer excellent oil resistance, high-temperature resistance (up to 120℃), and pressure resistance (up to 70MPa)—meeting API 16A standards for well control equipment. Metal parts (bolts, ram shafts, valve bodies) are made of high-strength alloy steel,经过 heat treatment to enhance corrosion resistance and tensile strength, suitable for high-salt, high-humidity oilfield environments.

Precision Machining & OEM Compatibility

All parts are manufactured using CNC precision machining, with strict dimensional tolerance control (±0.01mm) to ensure 100% compatibility with original BOP and FKQ equipment. For example, the FZ35×35RS ram assembly (fully sealed, FZ897.21.01.00) and 2FZ53-21 variable diameter ram assembly (5′-5 1/2′) are designed to fit perfectly with the original equipment, eliminating the need for modifications and reducing installation time.

Sealed & Explosion-Proof Design

FKQ series parts (such as FKQ8007 flameproof magnetic starter BQC83-40 and FKQ6407 explosion-proof motor 15KW YB160L-4) adopt explosion-proof structures, complying with Exd II BT4 explosion-proof standards, ensuring safe operation in flammable and explosive oilfield environments. Sealing parts (O-rings, lip seal rings) use integrated sealing structures to prevent fluid leakage and dust contamination, extending part service life.

Easy Installation & Maintenance

Parts are designed with user-friendly features to simplify on-site installation and maintenance. For example, the FKQ6406 repair kit includes all necessary components for quick on-site repairs, while the FZ35-70 front seal (11148.09.02.02) features a quick-disconnect design, allowing maintenance personnel to replace it in less than 30 minutes—minimizing equipment downtime.

Applicable Working Conditions

Our spare parts are specifically engineered to perform reliably in the harsh and variable working conditions of oilfield operations, including:

• Onshore Oilfield Drilling: Suitable for 2FZ53-21, FZ35-70 BOP systems and FKQ640-7, FKQ6407 remote control systems, adapting to high temperature (-20℃ ~ 80℃), high humidity, and dusty environments.

• Offshore Oilfield Operations: Corrosion-resistant parts (such as stainless steel bolts, fluorine rubber seals) are designed to withstand high-salt, high-humidity offshore environments, preventing component corrosion and ensuring long service life.

• High-Pressure Well Control: BOP parts (such as FZ35-70 ram assemblies, FZ54-14 sealing rings) are pressure-resistant up to 70MPa, suitable for high-pressure well drilling and completion operations, complying with API 16A well control standards.

• Emergency Well Control Scenarios: Nitrogen capsules (N-80), accumulator capsules (80L), and pneumatic pumps (JY1-10-4) are designed to respond quickly in emergency situations, ensuring BOP systems can be activated immediately to prevent blowouts.

• Harsh Temperature Environments: Parts are designed to withstand extreme temperatures, from -40℃ (low-temperature regions) to 120℃ (high-temperature wellbores), ensuring no performance degradation or failure.

Maintenance & Care Recommendations

Proper maintenance and care are essential to extend the service life of BOP and FKQ spare parts, ensure system reliability, and reduce maintenance costs. Below are targeted recommendations for different product categories:

BOP Seal & Ram Parts Maintenance

• Inspect ram rubbers and seal rings monthly for signs of wear, cracking, or deformation. Replace parts immediately if damage is found to avoid leakage.

• Clean ram surfaces and sealing grooves before installing new parts to remove mud, oil, and debris—this prevents damage to the seal and ensures a tight fit.

• Store unused ram rubbers and seal rings in a dry, cool, and dust-free warehouse, avoiding direct sunlight and contact with oil or chemicals, which can cause aging.

FKQ Pneumatic & Hydraulic Parts Maintenance

• Check FKQ640-7 air source processing elements (AL4000-04) and filter regulators (QFH-261-0.6MPa) weekly. Clean or replace filters if pressure drops or contamination is found.

• Inspect pneumatic pumps (JY1-10-4, QYB20-00-00) for oil leakage monthly. Replace O-rings (φ17*2.65) and seals if leakage occurs, and ensure the pump is lubricated with the correct hydraulic oil (46# anti-wear hydraulic oil).

• Test relief valves (Y-40,20 9161900000, JYS21-25) and pressure regulating valves (QTY-8) quarterly to ensure they operate correctly at the rated pressure.

Supporting Parts Maintenance

• Inspect nitrogen capsules (N-80) and accumulator capsules (80L) every 6 months for air leakage. Recharge nitrogen to the rated pressure (7MPa for FK200-4 air bag) if needed.

• Check flameproof magnetic starters (BQC83-40) and explosion-proof motors (YB160L-4) for loose connections and damage to the explosion-proof housing. Clean electrical components regularly to prevent dust accumulation.

General Maintenance Principles

After each drilling operation, clean all BOP and FKQ parts to remove mud, oil, and debris. Keep a record of part replacement and maintenance dates to ensure timely replacement of worn parts. Use only compatible spare parts—avoid using non-OEM parts, which can cause system failure and safety hazards.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are 3 real on-site fault repair cases, providing practical reference for users to solve common BOP and FKQ system problems using our spare parts:

Case 1: 2FZ53-21 BOP Ram Leakage

Fault Phenomenon: During drilling operations, the 2FZ53-21 (53×21) BOP had fluid leakage from the ram area, threatening well control safety.

Fault Diagnosis: Inspection revealed that the 2FZ53-21 ram rubber (5″) was worn and cracked, resulting in poor sealing performance. The wear was caused by long-term use in high-pressure and high-temperature conditions.

Repair Solution: Replace the worn ram rubber with our 2FZ53-21 5″ ram rubber. After installation, the BOP seal was restored, and no leakage was detected. The BOP resumed normal operation, ensuring safe drilling continuity.

Case 2: FKQ640-7 Remote Control System Pneumatic Pump Failure

Fault Phenomenon: The FKQ640-7 remote control system failed to actuate the BOP, and the pneumatic pump assembly (JY1-10-4) was not providing sufficient pressure.

Fault Diagnosis: Testing found that the pump’s O-ring (φ17*2.65) was damaged, causing air leakage and reduced pressure output. The O-ring had aged due to long-term exposure to high-temperature hydraulic oil.

Repair Solution: Replace the damaged O-ring with our φ17*2.65 O-ring and inspect the pump for other wear parts. After replacement and debugging, the pneumatic pump provided stable pressure, and the FKQ640-7 system successfully actuated the BOP. The fault was completely resolved.

Case 3: FZ35-70 BOP Front Seal Leakage

Fault Phenomenon: The FZ35-70 (35×70) BOP had fluid leakage from the front seal area during well control operations, affecting operational safety.

Fault Diagnosis: Inspection showed that the FZ35-70 front seal (11148.09.02.02) was worn and deformed, losing its sealing ability. The wear was caused by debris accumulation and improper maintenance.

Repair Solution: Clean the BOP front seal groove and replace the worn front seal with our FZ35-70 front seal. After installation, the leakage was eliminated, and the BOP maintained stable performance during subsequent well control operations.

Frequently Asked Questions (FAQ)

Procurement Guide & Technical Support

We are dedicated to supplying high-quality BOP and FKQ series spare parts that meet the strict safety and performance requirements of oilfield operations. Whether you need a single part (such as 2FZ53-21 ram rubber, FKQ640-7 check valve) or a batch of spare parts for equipment maintenance, we can provide customized supply solutions tailored to your needs.

Our spare parts are manufactured using advanced production processes and high-quality materials, ensuring durability, reliability, and compatibility. We adhere to API 16A and ISO 9001 quality management systems, and each part is inspected for material quality, dimensional accuracy, and performance before shipment—providing you with a reliable procurement reference standard. Additionally, our professional technical team can provide on-site installation guidance and fault diagnosis support, helping you solve technical problems quickly and minimize equipment downtime.

If you need to purchase BOP or FKQ series spare parts, or have questions about product selection, maintenance, or installation, please contact us. Our team will provide you with one-on-one technical consultation and procurement guidance, helping you choose the most suitable spare parts for your equipment. Choose our spare parts to ensure the safe, efficient, and continuous operation of your oilfield drilling and well control systems—your trusted partner for oilfield spare part supply and technical support.

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