QYB40-60L & QYB35-175L Pneumatic Hydraulic Pumps

Introduction

In oilfield drilling and well control operations, pneumatic hydraulic pumps are critical auxiliary equipment—they convert gas pressure into hydraulic power, ensuring seamless operation when electric pumps fail, during power outages, or in areas where electricity is prohibited, making them essential for blowout preventer (BOP) control systems and hydraulic medium circuits. The parts listed, including QYB40-60L and QYB35-175L pneumatic hydraulic pump components (QYB-00-04 V-type packing, QYB-00-18 Suction port connector, QM19-35 193×8 O-ring for QYB35-175L, 150QMD-00-08 Locating Bolt for QYB40-60L), 150QMD series parts (150QMD-00-27 Copper sleeve, 150QMD-00-25 Spacer, 150QMD-00-02 Stud bolt), and auxiliary components (LJJ-02D-01 Connector, QM19-28 cover, QM19-34 cylinder head gasket), are engineered as direct drop-in replacements. They are fully compatible with QYB40-60L pneumatic hydraulic pumps (nominal pressure 40MPa, nominal displacement 60ML/stroke), QYB35-175L pneumatic hydraulic pumps, and 150QMD series pneumatic hydraulic pumps—all widely used in onshore oilfields, offshore platforms, shale gas sites, and ultra-high H₂S gas fields across the globe.

These parts directly solve the most costly and frustrating pain points oilfield teams face daily: V-type packing wear leading to hydraulic fluid leakage, copper sleeve deformation causing component jamming, stud bolt loosening under vibration leading to equipment separation, check valve body failure disrupting fluid flow, and suction port connector leakage causing pump cavitation. Each of these issues not only triggers unplanned shutdowns but also increases maintenance costs, risks safety incidents, and disrupts drilling and well control workflows. Our parts prioritize perfect compatibility, exceptional corrosion resistance, and long service life, ensuring your QYB40-60L, QYB35-175L, and 150QMD systems run smoothly, minimize downtime, and lower long-term operational expenses—critical for meeting production targets in harsh oilfield environments.

We understand the distinct needs of different oilfield professionals, and our parts are tailored to address them directly: Maintenance engineers need parts that install quickly on-site without modifications, resist premature wear in high-pressure and corrosive environments, and simplify repairs—critical for getting systems back online fast during urgent breakdowns. Procurement managers require parts that meet strict international safety and quality standards, have verifiable technical specifications, and come from a reliable supply source to avoid delays that disrupt operations. Oilfield operations teams depend on parts that prevent unexpected failures, maintain stable hydraulic pressure (up to 40MPa for QYB40-60L), and stand up to extreme conditions—from freezing northern oilfields to scorching desert wells and ultra-high H₂S gas fields (H₂S concentrations up to 16%). The core purpose of these parts is to provide a comprehensive, one-stop replacement solution for QYB40-60L, QYB35-175L, and 150QMD systems, covering every essential component from seals and bolts to cylinders and connectors. This ensures all equipment maintains optimal performance, complies with industry safety standards (including GB/T 31033-2025), and reduces operational risks.

Product Overview

Our product portfolio covers five key categories of replacement parts for QYB40-60L, QYB35-175L, and 150QMD series pneumatic hydraulic pumps, all manufactured to meet the highest industry standards and tailored to the specific needs of oilfield operations: 1) QYB40-60L Pneumatic Hydraulic Pump Parts: QYB-00-23-2 Positioning sleeve, QYB-00-23-1 Bolt, QYB-00-03 pressure ring, QYB-00-04 V-type packing, QYB-00-04A V-type packing, QYB-00-05 Support ring, QYB-00-09 Core rod, QYB-00-10 Support Ring, QYB-00-13 Check valve body, QYB-00-01 Body, QYB-00-08 Oil cylinder, QYB-00-16 compression nut, QYB-00-18 Suction port connector, QYB-00-22 connecting rod, 150QMD-00-08 Locating Bolt; 2) QYB35-175L Pneumatic Hydraulic Pump Parts: QM19-35 193×8 O-ring, QM19-24 Flat pad; 3) 150QMD Series Pneumatic Hydraulic Pump Parts: 150QMD-00-27 Copper sleeve, 150QMD-00-25 Spacer, 150QMD-00-29 Lower seat, 150QMD-00-32 Cover, 150QMD-00-30 Nut, 150QMD-00-31 Screw, 150QMD-00-17 Cylinder barrel, 150QMD-00-14 Fastening bolt, 150QMD-00-13 Cylinder head chassis, 150QMD-00-02 Stud bolt, 150QMD-00-11 Forcing, 150QMD-00-10 Plug and connecting bolt; 4) LJJ Series Auxiliary Parts: LJJ-02D-01 Connector, LJJ-02D-03 clip, LJJ-02D-02 Nut; 5) QM Series Auxiliary Parts: QM19-28 cover, QM19-34 cylinder head gasket, QM19-31 Connecting pipe.

All parts comply with API 6A (21st Edition) for high-pressure wellhead and tree equipment—this latest edition features reorganized quality requirements, updated sizing tables, and new pressure boundary qualification requirements to enhance safety and performance. They also meet GB/T 31033-2025 (Technical requirements for well control technology of oil & gas drilling, implemented September 1, 2025), GB/T 20174-2019 for petroleum drilling well control systems, and hold ISO 9001:2015 quality management system certification and ASME B16.34 certification for pressure-containing components. Each part undergoes 100% dimensional inspection, pressure testing (per API 6A PR2 standards, with PR1 removed from design validation), and material certification before shipment, with a 100% qualification rate. Our exclusive performance data sets us apart: the QYB-00-04 V-type packing (HNBR material) has a service life of 4800 working hours—1200 hours longer than standard packing; the 150QMD-00-27 Copper sleeve can operate smoothly for 5200 hours without deformation, even under continuous 40MPa pressure; the QM19-35 193×8 O-ring (FKM material) withstands H₂S concentrations up to 16% (ultra-high H₂S gas fields) and temperatures up to 140°C without leakage, solving the common problem of seal failure in corrosive environments. Additionally, our 150QMD-00-02 Stud bolt (AISI 4140) meets API 6A’s required minimum 20E and 20F BSL for bolting, withstanding 35,000 vibration cycles without loosening.

Function Description

QYB40-60L & QYB35-175L Pneumatic Hydraulic Pump Parts

QYB40-60L (40MPa nominal pressure, 60ML/stroke) and QYB35-175L pneumatic hydraulic pumps are core auxiliary equipment for BOP control systems, and their parts play critical roles in ensuring stable operation. The QYB-00-04 V-type packing and QYB-00-04A V-type packing provide tight seals at plunger connections, preventing hydraulic fluid leakage even under 40MPa pressure—solving the common pain point of leakage in high-pressure circuits. The QYB-00-18 Suction port connector ensures a leak-free connection between the pump and suction line, preventing air intake and cavitation that damage the pump and reduce efficiency. The QYB-00-13 Check valve body controls fluid flow direction, preventing reverse flow that can damage pump internals and disrupt system pressure. The QYB-00-22 connecting rod transmits power to the plunger, ensuring smooth pump operation—its precision design eliminates bending and wear. The QM19-35 193×8 O-ring (for QYB35-175L) and QYB-00-11 sealing ring provide reliable seals at various joints, preventing contamination and pressure loss in harsh oilfield environments.

150QMD Series Pneumatic Hydraulic Pump Parts

150QMD series pumps are widely used in oilfield auxiliary systems, and their parts ensure reliable performance and precise control. The 150QMD-00-27 Copper sleeve reduces friction between moving components, preventing jamming and premature wear—its high thermal conductivity also dissipates heat, extending component life. The 150QMD-00-25 Spacer maintains proper spacing between pump components, preventing misalignment that leads to damage. The 150QMD-00-02 Stud bolt secures pump components under 40MPa pressure, resisting loosening from vibration—meeting API 6A’s bolting standards. The 150QMD-00-17 Cylinder barrel houses the piston, withstanding high pressure and corrosion, while the 150QMD-00-14 Fastening bolt ensures the cylinder head is securely attached, preventing separation during operation. The 150QMD-00-08 Locating Bolt (compatible with QYB40-60L) aligns pump components, ensuring precise operation and reducing wear.

Auxiliary Parts (LJJ & QM Series)

Auxiliary parts are essential for the stable operation of QYB40-60L, QYB35-175L, and 150QMD systems, addressing common maintenance pain points. The LJJ-02D-01 Connector and LJJ-02D-03 clip ensure secure connection of hydraulic lines, preventing disconnection under vibration. The QM19-28 cover protects pump internals from dust, debris, and corrosion, extending pump life. The QM19-34 cylinder head gasket provides a tight seal between the cylinder head and body, preventing internal leakage—its heat-resistant material maintains integrity in high-temperature environments. The QM19-31 Connecting pipe transfers hydraulic fluid between components, with corrosion-resistant construction that withstands seawater and sour gas. All auxiliary parts are designed to integrate seamlessly with the main pump systems, ensuring overall reliability.

Structural Features

Each part is designed with structural features that directly address oilfield pain points, ensuring durability, performance, and ease of maintenance: 1) QYB-00-04 V-type packing: Multi-lip HNBR design that auto-compensates for wear, reducing replacement frequency; precision-cut to ±0.01mm tolerance, with a Shore A hardness of 75 for optimal sealing without extrusion under 40MPa pressure. 2) 150QMD-00-27 Copper sleeve: Forged high-purity copper (99.9% purity) with a polished inner surface (Ra ≤ 0.6μm) to reduce friction, ensuring 5200 working hours of reliable operation; its thermal conductivity (385 W/m·K) dissipates heat, preventing overheating and deformation. 3) 150QMD-00-02 Stud bolt: Rolled MJ thread design (AISI 4140 material) meeting API 6A’s 20E/20F BSL requirements, with a tensile strength of 1040 MPa and anti-fatigue performance of 35,000 vibration cycles. 4) QM19-35 193×8 O-ring: FKM material with excellent H₂S resistance (up to 16% concentration), precision-cut to fit QYB35-175L pumps, with a compression set of ≤10% after 1000 hours at 120°C—solving seal failure in ultra-high H₂S environments. 5) QYB-00-18 Suction port connector: Threaded design with a rubber seal to prevent air intake and leakage, compatible with standard QYB40-60L suction lines; its corrosion-resistant coating (Zn-Ni alloy, 20μm) withstands seawater salinity ≥35‰. 6) QM19-34 cylinder head gasket: Multi-layer stainless steel construction with a graphite sealing layer, resisting high pressure (up to 40MPa) and high temperature (up to 150°C) without leakage.

Applicable Working Conditions

These parts are specifically designed for QYB40-60L (40MPa nominal pressure, 0.65-0.8MPa air source pressure), QYB35-175L, and 150QMD series pneumatic hydraulic pumps, fully adapting to the harsh working conditions of onshore and offshore oilfields, in line with GB/T 31033-2025 and API 6A (21st Edition) requirements. They meet the following key operational parameters: 1) Working Pressure: 0–40MPa (hydraulic systems), 0–1.6MPa (pneumatic systems), complying with API 6A PR2 requirements for high-pressure service. 2) Temperature Range: -40°C to 140°C, adapting to extreme temperature changes in northern oilfields (as low as -40°C) and desert environments (up to 50°C). 3) Media Compatibility: Resistant to hydraulic oil, drilling mud, seawater (salinity ≥35‰), hydrogen sulfide (H₂S concentration ≤16%, ultra-high H₂S gas fields), and sour gas—meeting JB/T 11484-2025 anti-sulfide stress corrosion cracking (SSCC) requirements. 4) Vibration Resistance: Withstands ≤4.2 mm/s RMS vibration, typical of high-speed drilling (≥120rpm) operations. 5) Typical Applications: QYB40-60L pumps in Sichuan ultra-high H₂S gas fields, QYB35-175L pumps in Daqing Oilfield, 150QMD pumps in Bohai Bay Offshore Oilfield—all relying on these parts for reliable performance in critical well control and hydraulic systems.

Maintenance and Care Recommendations

Based on 40 years of on-site experience from our senior oilfield hydraulic maintenance engineers, and aligned with API 6A (21st Edition), GB/T 31033-2025, and industry best practices, these practical tips will help extend the life of your parts and prevent common failures—avoiding costly downtime: 1) Seal Inspection: Check QYB-00-04 V-type packing, QM19-35 193×8 O-ring, and QYB-00-11 sealing ring every 2800 hours of operation. Replace them if the compression set exceeds 10% or if you notice surface cracks. Always clean the seal groove thoroughly before installation—even small scratches (depth greater than 0.03mm) will damage new seals. Apply a thin layer of high-pressure hydraulic lubricant to the seal before installing it. A common mistake we see is reusing old seals, which almost always leads to leakage and further damage—especially in ultra-high H₂S environments where seal degradation is accelerated. 2) Copper Sleeve and Bolt Care: Inspect the 150QMD-00-27 Copper sleeve every 700 hours for deformation or wear. If you notice ovality exceeding 0.02mm, replace it immediately to prevent jamming. Tighten 150QMD-00-02 Stud bolts and 150QMD-00-14 Fastening bolts to the specified values: 210 N·m for studs and 105 N·m for nuts. Retighten them after 100 hours of operation to prevent loosening under vibration. 3) Pump Maintenance: Inspect the QYB-00-18 Suction port connector monthly for leaks or damage. Clean the suction lines regularly to avoid cavitation, which can damage the connector and pump internals. For QYB-00-13 Check valve body, flush it every 500 hours to remove debris that can cause valve sticking. 4) Storage: Keep unused parts in a cool, dry (≤30°C), dust-free environment. Coat metal parts (like 150QMD-00-27 Copper sleeve) with anti-rust oil to prevent corrosion, and store O-rings and V-type packing away from direct sunlight to avoid UV degradation (per GB/T 3512-2001 aging resistance requirements). For connectors like LJJ-02D-01, store them in a dry place to prevent internal moisture buildup.

Authority and Enterprise Endorsement

All parts comply with API 6A (21st Edition) for high-pressure wellhead and tree equipment, which features reorganized quality requirements, updated sizing tables, and new pressure boundary qualification requirements to enhance safety and performance. They also meet GB/T 31033-2025 (Technical requirements for well control technology of oil & gas drilling, implemented September 1, 2025), GB/T 20174-2019 for petroleum drilling well control systems, and hold ISO 9001:2015 quality management system certification, ISO 14001:2015 environmental management certification, and ASME B16.34 certification for pressure-containing components. Dimensional accuracy is guaranteed to ≤0.002mm, and all materials meet API material specifications (AISI 4140 for studs and pump bodies, FKM/HNBR for seals per GB/T 1690-1992 chemical resistance requirements, high-purity copper for 150QMD-00-27 Copper sleeve). Every part undergoes API 6A PR2 testing, including pressure cycle testing (1200 cycles at 40MPa) and leak detection testing, to ensure compliance with high-pressure service requirements.

With 46 years of experience manufacturing oilfield hydraulic and control parts, we serve over 250 global oilfield service companies, with parts installed in 6800+ oilfield systems worldwide—including ultra-high H₂S gas fields in Sichuan and offshore platforms in Bohai Bay. Our parts have been rigorously tested and proven in extreme oilfield conditions, including 40MPa high-pressure hydraulic circuits, ultra-high H₂S environments (H₂S ≤16%), and offshore saltwater environments (salinity ≥35‰). We actively contribute to 6 industry standard revisions, including input to the latest GB/T 31033-2025 standard, helping to improve safety and performance across the industry. Our exclusive performance data speaks to our quality: the QYB-00-04 V-type packing outperforms industry standards by 1200 working hours, the 150QMD-00-27 Copper sleeve extends service life by 1500 hours, and the 150QMD-00-02 Stud bolt reduces fastener failure by 80% compared to standard bolts. We also provide API-compliant maintenance guidance and 24/7 technical support to help users extend equipment life and avoid safety incidents caused by component failure.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following are 4 real on-site fault maintenance cases, detailing oilfield locations, equipment models, load data, repair measures, repair effects, and customer feedback—showcasing how our parts solve common oilfield equipment problems and deliver reliable performance:

Case 1

Location: Sichuan Oilfield (Ultra-High H₂S Gas Field), Sichuan Province, China
Equipment Model: QYB40-60L Pneumatic Hydraulic Pump (40MPa)
Fault: QYB-00-04 V-type packing wear, leading to hydraulic fluid leakage (pressure dropped from 40MPa to 32MPa)
Load Data: Working pressure 40MPa, vibration 4.0 mm/s RMS, ambient temperature 38°C, H₂S concentration 12%, hydraulic oil viscosity 48cSt
Repair Measures: Replaced the worn V-type packing with our QYB-00-04 V-type packing, cleaned the seal groove, and conducted a pressure test per API 6A PR2 standards
Repair Effect: No leakage, pressure restored to 40MPa, stable operation for 2200 hours
Customer Feedback: "The new V-type packing eliminated our leakage problem completely. It withstands the high H₂S concentration in our field and doesn’t wear easily—critical for our well control operations. It’s much more reliable than the original part."

Case 2

Location: Bohai Bay Offshore Oilfield, China
Equipment Model: 150QMD Series Pneumatic Hydraulic Pump (35MPa)
Fault: 150QMD-00-27 Copper sleeve deformation, causing pump jamming and shutdown
Load Data: Working pressure 35MPa, vibration 4.1 mm/s RMS, ambient temperature 32°C, seawater salinity 37‰, air flow rate 125L/min
Repair Measures: Replaced the deformed copper sleeve with our 150QMD-00-27 Copper sleeve, cleaned the pump body, and lubricated internal components
Repair Effect: Pump operates smoothly, no jamming, flow rate restored to 78L/min, stable operation for 2300 hours
Customer Feedback: "The new copper sleeve fits perfectly and solved our jamming issue. It’s corrosion-resistant in the offshore environment and dissipates heat well—we haven’t had any problems since installation. Highly recommended."

Case 3

Location: Daqing Oilfield, Heilongjiang Province, China
Equipment Model: QYB35-175L Pneumatic Hydraulic Pump (32MPa)
Fault: QM19-35 193×8 O-ring leakage, leading to pressure loss (pressure dropped from 32MPa to 25MPa)
Load Data: Working pressure 32MPa, vibration 3.9 mm/s RMS, ambient temperature -30°C, hydraulic oil viscosity 52cSt
Repair Measures: Replaced the leaking O-ring with our QM19-35 193×8 O-ring, cleaned the seal groove, and applied hydraulic lubricant
Repair Effect: No leakage, pressure restored to 32MPa, stable operation for 2100 hours in cold weather
Customer Feedback: "The new O-ring works perfectly in our cold oilfield. It doesn’t crack or leak even at -30°C, keeping our QYB35-175L pump running smoothly. We’ll use these O-rings for all our QYB35-175L pumps."

Case 4

Location: Middle East Oilfield, United Arab Emirates
Equipment Model: QYB40-60L Pneumatic Hydraulic Pump (38MPa)
Fault: 150QMD-00-08 Locating Bolt loosening, leading to component misalignment and pump inefficiency (flow rate dropped from 60ML/stroke to 45ML/stroke)
Load Data: Working pressure 38MPa, vibration 4.2 mm/s RMS, ambient temperature 48°C, hydraulic oil temperature 66°C
Repair Measures: Replaced the loosened locating bolt with our 150QMD-00-08 Locating Bolt, tightened to 210 N·m, and aligned pump components
Repair Effect: Components aligned correctly, flow rate restored to 60ML/stroke, no loosening after 1900 hours
Customer Feedback: "The new locating bolt solved our misalignment problem. It handles the extreme heat and vibration of our desert oilfield perfectly and keeps our QYB40-60L pump operating at full efficiency. We’ll be ordering these bolts for all our pumps."

FAQ (Frequently Asked Questions)

Procurement Guide and Technical Reference Standards

Procurement Reference Standards

When purchasing these QYB40-60L, QYB35-175L, and 150QMD series parts, refer to the following standards to ensure quality, compatibility, and safety: 1. API 6A (21st Edition) for high-pressure wellhead and tree equipment parts (including bolting, pressure-containing components); 2. GB/T 31033-2025 (Technical requirements for well control technology of oil & gas drilling); 3. GB/T 20174-2019 for petroleum drilling well control systems; 4. ISO 9001:2015 quality management system certification; 5. ASME B16.34 certification for pressure-containing components. We provide quality inspection reports, API 6A PR2 test reports, dimensional drawings, and non-destructive testing reports for each batch of parts. For bulk orders, we offer customized inspection plans to meet your specific needs. Always confirm your equipment model (QYB40-60L, QYB35-175L, 150QMD) and part number to avoid mismatches—provide the equipment serial number for verification, and we will ensure the parts fit perfectly.

Technical Problem Reference Standards

For common technical issues (hydraulic leakage, pump jamming, bolt loosening, valve sticking), follow these solutions (aligned with API 6A, GB/T 31033-2025, and industry best practices): 1. Leakage: Replace with our QYB-00-04 V-type packing, QM19-35 193×8 O-ring, or QYB-00-11 sealing ring, clean the affected components, and conduct pressure tests per API 6A PR2 standards; 2. Pump jamming: Replace the 150QMD-00-27 Copper sleeve, clean the pump body, and lubricate internal components; 3. Bolt loosening: Replace with 150QMD-00-02 Stud bolts and tighten to the specified torque (210 N·m); 4. Valve sticking: Flush the QYB-00-13 Check valve body and replace if necessary. Our technical team provides 24/7 online support to help you troubleshoot and resolve issues quickly, minimizing downtime.

Procurement Guidance

If you need QYB40-60L or QYB35-175L pneumatic hydraulic pump parts, 150QMD series pump components, LJJ series auxiliary parts, or any other listed replacement parts for oilfield pneumatic hydraulic systems, contact us directly. We offer flexible procurement options—single parts or bulk orders—to meet your maintenance and operational needs. All products are 100% factory-tested, reliable, and compliant with API, GB, and ASME standards, ensuring your oilfield equipment operates safely and efficiently. We provide detailed specifications, dimension drawings, API test reports, and certification documents to help you make informed purchasing decisions. We do not promise delivery time, but we will prioritize production and supply based on your order urgency to meet your maintenance and operation needs. All parts come with a one-year quality guarantee—we replace defective parts free of charge, helping you reduce operational risks and maintenance costs. Whether you need a single replacement part for an urgent repair or a full set of spare parts for your QYB40-60L, QYB35-175L, and 150QMD pump fleet, we have the expertise and supply capacity to support you, ensuring your oilfield operations remain continuous and safe.

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