QYB35-175L Pneumatic Hydraulic Pump & 150QMD/SDTYF Series

Introduction

In oilfield operations, pneumatic hydraulic pumps, hydraulic control valves, and cylinder systems are the backbone of drilling, well control, and fluid transfer processes—any component failure can lead to costly unplanned shutdowns, safety hazards, or equipment damage. The parts listed, including QYB35-175L-09 Oil suction port connector for QYB35-175L Pneumatic Hydraulic Pump, 150QMD series components (150QMD-00 Shuttle Valve, 150QMD-00 Seal Ring, 150QMD-00-06 Positioning Spring), SDTYF series parts (SDTYF-00-07 Upper plug, SDTYF-00-11 Oil drain sliding sleeve, SDTYF-00-25 Drain plunger), QM210/QB210 series cylinder and oil pump parts (QM210-01 Cylinder Piston, QB210-02 Oil pump body), and auxiliary components (GB 1235-76 O-rings, JYS21-25S manual pressure regulating valve), are engineered as direct drop-in replacements. They are fully compatible with QYB35-175L Pneumatic Hydraulic Pumps, 150QMD series pneumatic hydraulic pumps, SDTYF series hydraulic control valves, QM210/QB210 series cylinders, and JYS21-25S manual pressure regulators—all widely used in onshore and offshore oilfields, shale gas sites, and heavy-duty oilfield hydraulic systems.

These parts directly solve the most frustrating and costly pain points oilfield teams face daily: shuttle valve jamming that halts pressure control, seal ring degradation leading to hazardous fluid leaks, cylinder piston wear reducing operational efficiency, oil drain sliding sleeve seizing that disrupts system depressurization, and loose connecting bolts causing component separation. Each of these issues not only delays operations but also increases maintenance costs and safety risks in harsh oilfield environments. Our parts prioritize perfect compatibility, exceptional durability, and precise performance, ensuring your pneumatic hydraulic and control systems run smoothly, minimize downtime, and lower long-term operational expenses.

We understand the unique needs of different oilfield professionals, and our parts are designed to address them directly: Maintenance engineers need parts that install quickly on-site without modifications, resist premature wear, 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 pressure and fluid flow, and stand up to extreme conditions—from freezing offshore platforms to scorching desert oilfields and corrosive sour gas wells. The core purpose of these parts is to provide a comprehensive, one-stop replacement solution for QYB35-175L, 150QMD, SDTYF, QM210, and QB210 systems, covering every essential component from pump connectors and valves to seals and cylinders. This ensures all equipment maintains optimal performance, complies with industry safety standards, and reduces operational risks.

Product Overview

Our product portfolio covers five key categories of replacement parts for oilfield pneumatic hydraulic and control systems, all manufactured to meet the highest industry standards and tailored to the specific needs of oilfield operations: 1) QYB35-175L Pneumatic Hydraulic Pump Parts: QYB35-175L-09 Oil suction port connector, 150QMD-00-06 Positioning Spring (compatible with QYB35-175L pumps); 2) 150QMD Series Pneumatic Hydraulic Pump Parts: 150QMD-00 Plug and connecting bolt, 150QMD-00 Shuttle valve sleeve, 150QMD-00 Shuttle Valve, 150QMD-00 Seal ring, 150QMD-00 Stud Bolts, 150QMD-00 Forcing piece, 150QMD-00 Support ring, 150QMD-00 Double female bar, 150QMD-00 Spring seat, 150QMD-00 Reversing spring, 150QMD-00 Single head rod, 150QMD-00 Looper, 150QMD-00-09 Gas plate, 150QMD-00-01 Flying cylinder head; 3) SDTYF Series Hydraulic Control Parts: SDTYF-00-07 Upper plug, SDTYF-00-08 Retaining ring, SDTYF-00-11 Oil drain sliding sleeve, SDTYF-00-12 Drain sleeve, SDTYF-00-15 Spring, SDTYF-00-16 Oil Inlet Sleeve, SDTYF-00-17 Valve plate, SDTYF-00-24 Wave Spring, SDTYF-00-25 Drain plunger, SDTYF-00-26 Drain port flange, SDTYF-00-09 Drain port blind flange; 4) QM210/QB210 Series Cylinder & Oil Pump Parts: QM210-01 Cylinder Piston, QM210-02 Cover, QM210-03 Lower seat, QM210-04 Cylinder barrel, QM210-05 Guide barrel, QM210-06 Cylinder head gasket, QB210-01 Plug, QB210-02 Oil pump body, QB20-01 Plunger, QB20-03 Lead pad packing; 5) Auxiliary Parts & Regulators: JYS21-25S manual pressure regulating valve, QDTYF-00 series cylinder parts (QDTYF-00-01 Cylinder upper cover, QDTYF-00-02 Diaphragm, QDTYF-00-03 Tray, QDTYF-00-04 Screw, QDTYF-00-05A Spring, QDTYF-00-06 Connecting rod, QDTYF-00-07 Platen, QDTYF-00-08 Cylinder lower cover), GB 1235-76 16X2.4/25X2.4/32X3.1 O-rings, QM19-35 193×8 O-ring.

All parts comply with API 6A (21st Edition) for high-pressure wellhead and tree equipment, API 16A (4th Edition) for drill-through and well control equipment, and GB/T 20174-2019 for petroleum drilling well control systems, as well as GB/T 31033-2025 technical requirements for oil & gas drilling well control. They hold ISO 9001:2015 quality management system certification and ASME B16.34 certification for pressure-containing components, ensuring they meet the strict safety and performance standards required for oilfield operations. Each part undergoes 100% dimensional inspection, pressure testing (per API 6A PR2 standards), and material certification before shipment, with a 100% qualification rate. Our exclusive performance data sets us apart: the 150QMD-00 Shuttle Valve has a service life of 5200 working hours—1500 hours longer than standard replacement valves; the QM210-01 Cylinder Piston can operate smoothly for 4800 hours without wear, even under continuous 28MPa pressure; the GB 1235-76 32X3.1 O-ring (made of HNBR material) withstands temperatures up to 135°C and pressures up to 35MPa without leakage, solving the common problem of seal failure in corrosive oilfield environments. Additionally, our SDTYF-00-24 Wave Spring features fatigue-resistant design that extends service life by 1800 hours compared to standard wave springs, reducing replacement frequency and maintenance costs.

Function Description

QYB35-175L & 150QMD Series Pump Parts

QYB35-175L Pneumatic Hydraulic Pumps and 150QMD series pumps convert pneumatic energy to hydraulic power, which is critical for well control, fluid transfer, and actuator operation in oilfields. The QYB35-175L-09 Oil suction port connector ensures a leak-free connection between the pump and suction line, preventing air intake and cavitation—problems that damage pumps and disrupt fluid flow. The 150QMD-00 Shuttle Valve directs fluid flow to maintain stable system pressure, preventing reverse flow and ensuring rapid response during pressure adjustments; its precision design eliminates jamming, which is a common cause of control delays in high-pressure circuits. The 150QMD-00 Seal ring provides a tight seal at pump joints, preventing external fluid leakage even under high vibration—critical for safety in high-pressure systems. The 150QMD-00-06 Positioning Spring maintains proper alignment of pump components, preventing misalignment that leads to premature wear and pump failure. The 150QMD-00 Stud Bolts secure pump components under 35MPa pressure, resisting loosening from constant vibration—preventing catastrophic failure of pressure-bound parts.

SDTYF Series Hydraulic Control Parts

SDTYF series parts regulate hydraulic flow, drain, and pressure in oilfield auxiliary systems, ensuring safe and efficient operation. The SDTYF-00-11 Oil drain sliding sleeve controls hydraulic fluid drainage, allowing rapid system depressurization and preventing fluid buildup that can damage components; its wear-resistant design eliminates seizing in high-vibration environments, a common issue with standard sleeves. The SDTYF-00-25 Drain plunger regulates drain flow rate, maintaining stable system pressure and preventing pressure fluctuations that disrupt equipment performance. The SDTYF-00-07 Upper plug seals hydraulic lines, preventing contamination and pressure loss—its forged alloy steel construction resists deformation under 40MPa pressure. The SDTYF-00-17 Valve plate controls fluid flow direction in hydraulic circuits, ensuring precise control and preventing reverse flow that can damage pumps and valves.

QM210/QB210 Series Cylinder & Oil Pump Parts

These parts enable linear motion and fluid pumping in oilfield auxiliary systems, supporting a range of critical operations. The QM210-01 Cylinder Piston converts hydraulic pressure to linear motion, driving cylinder operation; its low-friction design reduces energy loss and ensures smooth cycles, even after 4800 working hours. The QM210-06 Cylinder head gasket seals the cylinder head, preventing internal and external leakage—its high-temperature resistant material maintains integrity in harsh oilfield conditions. The QB210-02 Oil pump body houses pump internals, withstanding 35MPa continuous pressure; its forged AISI 4140 steel construction resists corrosion and deformation in sour gas and offshore environments. The QB20-01 Plunger transfers force to pump fluid, with a chromium-plated surface (25μm) for wear resistance, ensuring a service life of 5000 working hours.

Auxiliary Parts & Regulators

Auxiliary parts and regulators ensure the stable and safe operation of all systems, addressing common maintenance pain points. The JYS21-25S manual pressure regulating valve allows precise pressure adjustment (0–35MPa) with a locking mechanism to prevent pressure drift—critical for maintaining system pressure in variable load conditions; it works seamlessly with 150QMD and QYB35-175L systems. GB 1235-76 O-rings (16X2.4/25X2.4/32X3.1 sizes) and QM19-35 193×8 O-ring are made of HNBR material, resistant to hydraulic oil, seawater (salinity ≥35‰), and H₂S (≤1000ppm)—solving the problem of seal degradation in corrosive oilfield environments. QDTYF-00 series cylinder parts (Cylinder upper cover, Diaphragm, Connecting rod, etc.) support cylinder operation, ensuring smooth linear motion and preventing air or fluid leakage.

Structural Features

Each part is designed with structural features that directly address oilfield pain points, ensuring durability, performance, and ease of maintenance: 1) 150QMD-00 Shuttle Valve: Precision-machined spool (0.003mm tolerance) with a 20μm chromium-plated surface for corrosion and wear resistance, ensuring 5200 working hours of reliable operation. 2) QM210-01 Cylinder Piston: Double-lip seal design that automatically compensates for wear, reducing replacement frequency and maintenance costs; made of low-friction polyurethane to minimize energy loss. 3) SDTYF-00-11 Oil drain sliding sleeve: Forged alloy steel (ML30CrMo, per GB/T 6478-1986) with a polished inner surface (Ra ≤ 0.8μm) to reduce friction, preventing seizing in high-vibration environments. 4) GB 1235-76 32X3.1 O-ring: Precision-cut to ±0.02mm tolerance, with a Shore A hardness of 72 for optimal sealing without extrusion under 35MPa pressure. 5) QB210-02 Oil pump body: 34mm wall thickness (8mm thicker than standard parts) to resist pressure impact and corrosion, ensuring long-term reliability in sour gas wells. 6) QYB35-175L-09 Oil suction port connector: Threaded design with a rubber seal to prevent air intake and leakage, compatible with standard QYB35-175L pump suction lines.

Applicable Working Conditions

These parts are specifically designed for QYB35-175L Pneumatic Hydraulic Pumps, 150QMD series pumps, SDTYF series hydraulic control valves, QM210/QB210 series cylinders, and JYS21-25S manual pressure regulators, fully adapting to the harsh working conditions of onshore and offshore oilfields. They meet the following key operational parameters: 1) Working Pressure: 0–35MPa (hydraulic systems), 0–1.6MPa (pneumatic systems), complying with API 6A PR2 requirements for high-pressure service. 2) Temperature Range: -35°C to 135°C, adapting to extreme temperature changes in desert environments (up to 48°C) and offshore locations (as low as -18°C). 3) Media Compatibility: Resistant to hydraulic oil, drilling mud, seawater (salinity ≥35‰), hydrogen sulfide (H₂S concentration ≤1000ppm), and sour gas—meeting JB/T 11484-2025 anti-sulfide stress corrosion cracking (SSCC) requirements. 4) Vibration Resistance: Withstands ≤4.0 mm/s RMS vibration, typical of high-speed drilling (≥120rpm) operations. 5) Typical Applications: QYB35-175L pumps in Tarim Oilfield ultra-deep wells, 150QMD pumps in Bohai Bay Offshore Oilfield, SDTYF valves in Sichuan Oilfield shale gas wells, and JYS21-25S regulators in Middle East desert oilfields—all relying on these parts for reliable performance.

Maintenance and Care Recommendations

Based on 40 years of on-site experience from our senior oilfield hydraulic maintenance engineers, and aligned with API 6A, API 16A, and GB/T 20174-2019 maintenance guidelines, these practical tips will help extend the life of your parts and prevent common failures—avoiding costly downtime: 1) Seal Inspection: Check GB 1235-76 O-rings and QM19-35 193×8 O-ring every 3000 hours of operation. Replace them if the compression set exceeds 14% or if you notice surface cracks. Always clean the seal groove thoroughly before installation—even small scratches (depth greater than 0.04mm) will damage new seals. Apply a thin layer of high-pressure hydraulic lubricant to the O-ring before installing it. A common mistake we see is reusing old O-rings, which almost always leads to leakage and further damage. 2) Valve and Piston Care: Lubricate the 150QMD-00 Shuttle Valve and QM210-01 Cylinder Piston every 400 hours with anti-wear hydraulic grease. Avoid over-lubrication, as this attracts debris and can cause jamming—just a thin layer is enough to reduce friction. 3) Fastener Torque: Tighten 150QMD-00 Stud Bolts, QDTYF-00-04 Screws, and QM210-06 Cylinder head gasket bolts to the specified values: 190 N·m for studs and 95 N·m for nuts. Retighten them after 120 hours of operation to prevent loosening under vibration. 4) Pump Maintenance: Inspect the QB20-01 Plunger every 800 hours for wear. If you notice scoring deeper than 0.03mm, replace the plunger immediately to prevent pump failure. Clean the suction lines monthly to avoid cavitation, which can damage the QYB35-175L-09 Oil suction port connector and pump internals. 5) Storage: Keep unused parts in a cool, dry (≤30°C), dust-free environment. Coat metal parts with anti-rust oil to prevent corrosion, and store O-rings away from direct sunlight to avoid UV degradation (per GB/T 3512-2001 aging resistance requirements). For pressure regulators like JYS21-25S, store them in a vertical position to prevent internal component misalignment.

Authority and Enterprise Endorsement

All parts comply with API 6A (21st Edition) for high-pressure wellhead and tree equipment, which sets strict technical requirements for design, material selection, processing, and testing to ensure safety and reliability in oilfield operations. They also meet API 16A (4th Edition) for drill-through and well control equipment, GB/T 20174-2019 for petroleum drilling well control systems, and GB/T 31033-2025 technical requirements for oil & gas drilling well control. All parts 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 ≤0.003mm, and all materials meet API material specifications (AISI 4140 for pump bodies and valve plates, HNBR for O-rings per GB/T 1690-1992 chemical resistance requirements, ML30CrMo for sliding sleeves per GB/T 6478-1986). Every part undergoes API 6A PR2 testing, including pressure cycle testing (1000 cycles at 35MPa) 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 6500+ oilfield systems worldwide. Our parts have been rigorously tested and proven in extreme oilfield conditions, including 35MPa high-pressure hydraulic circuits, sour gas environments (H₂S ≤1000ppm), and offshore saltwater environments (salinity ≥35‰). We actively contribute to 5 industry standard revisions for oilfield replacement parts, helping to improve safety and performance across the industry. Our exclusive performance data speaks to our quality: the 150QMD-00 Shuttle Valve outperforms industry standards by 1500 working hours, the SDTYF-00-24 Wave Spring extends service life by 1800 hours, and the QM210-01 Cylinder Piston reduces maintenance frequency by 30% compared to standard pistons. 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: Daqing Oilfield, Heilongjiang Province, China
Equipment Model: QYB35-175L Pneumatic Hydraulic Pump (32MPa)
Fault: QYB35-175L-09 Oil suction port connector leakage, leading to air intake and pump cavitation (flow rate dropped from 75L/min to 50L/min)
Load Data: Working pressure 32MPa, vibration 3.8 mm/s RMS, ambient temperature -28°C, hydraulic oil viscosity 46cSt
Repair Measures: Replaced the leaking connector with our QYB35-175L-09 Oil suction port connector, cleaned the suction line, and primed the pump
Repair Effect: No leakage, pump cavitation eliminated, flow rate restored to 75L/min, stable operation for 2300 hours
Customer Feedback: "The new connector fits perfectly with our QYB35-175L pump and solved the cavitation problem immediately. It’s durable in cold weather and has kept our pump running smoothly—avoiding costly downtime. We’ll use these connectors for all our QYB35-175L pumps."

Case 2

Location: Bohai Bay Offshore Oilfield, China
Equipment Model: 150QMD Series Pneumatic Hydraulic Pump (28MPa)
Fault: 150QMD-00 Shuttle Valve jamming, causing pressure control failure (pressure drifted from 28MPa to 20MPa)
Load Data: Working pressure 28MPa, vibration 3.9 mm/s RMS, ambient temperature 33°C, seawater salinity 36‰, air flow rate 120L/min
Repair Measures: Replaced the jammed shuttle valve with our 150QMD-00 Shuttle Valve, cleaned the valve body, and lubricated internal components
Repair Effect: Valve operates smoothly, pressure stabilized at 28MPa, response time ≤0.3s, no jamming after 1900 hours
Customer Feedback: "The new shuttle valve fixed our pressure control issue completely. It’s corrosion-resistant in the offshore environment and handles vibration perfectly. Installation was quick, and it’s been reliable ever since—we highly recommend it."

Case 3

Location: Sichuan Oilfield, Sichuan Province, China
Equipment Model: SDTYF Series Hydraulic Control Valve (25MPa)
Fault: SDTYF-00-11 Oil drain sliding sleeve seizing, unable to drain fluid, leading to system overpressure
Load Data: Working pressure 25MPa, vibration 3.7 mm/s RMS, ambient temperature 41°C, H₂S concentration 920ppm, fluid flow rate 65L/min
Repair Measures: Replaced the seized sliding sleeve with our SDTYF-00-11 Oil drain sliding sleeve, cleaned the valve body, and applied anti-galling lubricant
Repair Effect: Fluid drains smoothly, system pressure stabilized at 25MPa, no seizing for 2000 hours of operation
Customer Feedback: "The new sliding sleeve eliminated our overpressure problem. It’s resistant to sour gas corrosion and doesn’t seize even in high-vibration conditions—critical for our shale gas operations. It’s much more reliable than the original part."

Case 4

Location: Middle East Oilfield, United Arab Emirates
Equipment Model: QM210 Series Cylinder (22MPa)
Fault: QM210-01 Cylinder Piston wear, leading to slow cylinder response (cycle time increased from 0.4s to 1.3s)
Load Data: Working pressure 22MPa, vibration 4.0 mm/s RMS, ambient temperature 52°C, hydraulic oil temperature 65°C
Repair Measures: Replaced the worn piston with our QM210-01 Cylinder Piston, cleaned the cylinder barrel, and lubricated internal components
Repair Effect: Cylinder response time restored to 0.4s, smooth operation, no wear after 1700 hours
Customer Feedback: "The new piston fixed our slow response issue completely. It handles the extreme heat of our desert oilfield perfectly and has a long service life—reducing our maintenance costs. We’ll be ordering these pistons for all our QM210 cylinders."

FAQ (Frequently Asked Questions)

Procurement Guide and Technical Reference Standards

Procurement Reference Standards

When purchasing these QYB35-175L, 150QMD, SDTYF, QM210, and QB210 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; 2. API 16A (4th Edition) for well control equipment parts; 3. GB/T 20174-2019 and GB/T 31033-2025 for petroleum drilling well control requirements; 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 (QYB35-175L, 150QMD, SDTYF, QM210, etc.) 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 (pump leakage, shuttle valve jamming, cylinder slow response, oil drain sleeve seizing), follow these solutions (aligned with API 6A, API 16A, and industry best practices): 1. Leakage: Replace with our GB 1235-76 O-rings or QYB35-175L-09 Oil suction port connector, clean the affected components, and conduct pressure tests per API 6A PR2 standards; 2. Shuttle valve jamming: Replace the 150QMD-00 Shuttle Valve, clean the valve body, and lubricate internal components; 3. Cylinder slow response: Replace the QM210-01 Cylinder Piston, clean the cylinder barrel, and replace contaminated hydraulic fluid; 4. Oil drain sleeve seizing: Replace the SDTYF-00-11 Oil drain sliding sleeve and apply anti-galling lubricant. Our technical team provides 24/7 online support to help you troubleshoot and resolve issues quickly, minimizing downtime.

Procurement Guidance

If you need QYB35-175L Pneumatic Hydraulic Pump parts, 150QMD series pump components, SDTYF series hydraulic control parts, QM210/QB210 series cylinder and oil pump parts, or any other listed replacement parts for oilfield pneumatic hydraulic and control 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 pneumatic hydraulic and control fleet, we have the expertise and supply capacity to support you, ensuring your oilfield operations remain continuous and safe.

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