Clutch LT500/125, YPQ-40A Transmitter & 70 MPa DLF70 Check Valve

Introduction

In the demanding environments of oil and gas drilling, workover, and well control, every component must perform flawlessly to prevent costly downtime and ensure safety. A failing clutch, inaccurate pressure signal, or leaking valve can disrupt operations and create hazardous conditions. We specialize in providing high-performance, application-specific spare parts that address these critical challenges. Our core offerings include the Clutch LT500/125, YPQ-40A (70A, 105A) Pressure Transmitter, and 70 MPa 1” DLF70 High-Pressure Check Valve, alongside a comprehensive range of components tailored for leading drilling rig equipment.

Our focus is on serving drilling contractors, workover teams, and well service providers who demand reliability, precision, and compatibility. Our parts are engineered for direct, drop-in replacement for equipment from Canrig, SJ Petroleum, ZJ series rigs, and SGX vibrating screens. Each part is manufactured to meet API 6A, API 16C, ISO 9001, and GB/T 17744 standards, solving common pain points such as clutch slippage, signal drift, valve leakage, and premature wear. Our goal is to maximize equipment uptime, extend component life, and ensure the safe, efficient operation of your critical assets.

Product Overview

Core Product Models & Equipment Compatibility

Our spare parts are designed for seamless integration with industry-leading equipment, eliminating the need for modifications and ensuring quick, reliable installation. Key compatible equipment and matching parts include:

Function Description

Each part we supply is engineered to solve specific on-site problems, ensuring smooth, safe, and efficient operation—no complex jargon, just practical solutions:

• Clutch LT500/125: Delivers reliable torque transmission for drawworks and drilling rigs, ensuring smooth engagement and disengagement. It eliminates the risk of slippage and mechanical shock, preventing damage to drivetrain components and ensuring precise control during hoisting and drilling operations.

• YPQ-40A (70A, 105A) Pressure Transmitter: Converts hydraulic pressure into accurate electrical signals for throttle manifold control boards. It provides stable, real-time pressure data, solving the problem of signal drift and ensuring precise well control.

• 70 MPa 1” DLF70 High-Pressure Check Valve: Prevents reverse flow in high-pressure hydraulic systems, maintaining system integrity and preventing equipment damage. It is designed to handle extreme pressures and harsh drilling conditions, ensuring reliable operation in well control manifolds.

• Wear Ring 2FZ85M-18: Reduces friction and wear in drilling tools, extending component life and minimizing maintenance costs. It acts as a sacrificial wear component, protecting critical parts from abrasion and ensuring long-term equipment performance.

• O-ring 100×5.7 JB/ZQ4224-97: Creates a tight, leak-proof seal in hydraulic and pneumatic systems, preventing fluid loss and contamination. It is resistant to oil, mud, and high temperatures, ensuring reliable performance in demanding drilling environments.

Structural Features

Our spare parts stand out for their durable materials, precision manufacturing, and user-centric design—all tailored to the harsh oilfield environment:

• High-Quality Materials: The Clutch LT500/125 features a high-strength steel core and premium friction material, delivering a torque capacity of 5000 N·m and a service life of over 5,000 operating hours. The YPQ-40A Transmitter uses a piezoresistive sensing element for high accuracy, while the DLF70 Check Valve is constructed from forged alloy steel for exceptional pressure resistance (up to 70 MPa).

• Precision Manufacturing: All parts are CNC-machined to tight tolerances, with dimensional accuracy within 0.005 mm. The Wear Ring 2FZ85M-18 is precision-molded to ensure a perfect fit, and the O-ring 100×5.7 is manufactured to ISO 2859-1 standards, ensuring consistent quality.

• Durability & Reliability: The Clutch LT500/125 is designed for high-temperature operation (up to 150°C) and features a wear-resistant friction plate that reduces maintenance intervals. The YPQ-40A Transmitter has a fast response time (<100 ms) and is resistant to vibration and shock, making it ideal for harsh drilling conditions.

• Easy Maintenance: Parts like the Shaft Sleeve SB68J0036 and Jaw Set Assembly ZQ203-068-1 are designed for quick replacement, reducing downtime and labor costs. The 70 MPa DLF70 Check Valve features a simple, compact design for easy installation and maintenance.

Applicable Working Conditions

Our spare parts are rigorously tested to perform reliably in the most challenging oilfield scenarios, adapting to extreme environments that ordinary parts cannot withstand:

• High-Pressure & High-Temperature Environments: The 70 MPa DLF70 Check Valve and YPQ-40A Transmitter are rated for pressures up to 70 MPa and temperatures up to 180°C, making them suitable for deep well drilling and high-pressure well control systems.

• Harsh Chemical Exposure: All sealing components, including the O-ring 100×5.7 and Felt Seal AF50001-01.02-07, are resistant to drilling mud, oil, gas, and corrosive fluids, ensuring long-term performance in sour service (H₂S) environments.

• Heavy-Load Operations: The Clutch LT500/125 and Sprocket Rotor Drive Z=20 are designed to handle high torques and heavy loads, ensuring stable operation during drawworks hoisting and drilling rig rotation.

• Vibration & Shock Resistance: The YPQ-40A Transmitter and Solenoid Valve 112554-J2 are built to withstand extreme vibration and shock, ensuring accurate signal transmission and reliable operation in moving equipment.

Maintenance & Care Recommendations

Based on years of on-site experience from our engineers, we provide practical maintenance tips to extend part life, reduce costs, and avoid common mistakes—simple, actionable advice for field teams:

• Regular Inspections: Check the Clutch LT500/125 every 1,000 operating hours for signs of wear, such as friction plate thinning or air leakage. Inspect the YPQ-40A Transmitter for signal accuracy and check the DLF70 Check Valve for leakage during routine maintenance.

• Lubrication Tips: For the Clutch LT500/125, use a high-temperature, anti-wear lubricant and reapply every 500 hours. Lubricate moving parts like the Shaft Sleeve SB68J0036 and Jaw Set Assembly ZQ203-068-1 to reduce friction and wear.

• Storage Precautions: Store sealing components, such as O-rings and gaskets, in a cool, dry place away from direct sunlight to prevent aging. Metal parts should be coated with anti-rust oil to avoid corrosion during storage.

• Engineer’s Pitfall Reminder: When installing the YPQ-40A Transmitter, ensure proper grounding to avoid electrical interference. For the 70 MPa DLF70 Check Valve, never exceed the rated pressure, as this can cause valve failure. Always use genuine replacement parts to maintain equipment performance and safety.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following 4 real, concise cases demonstrate how our parts solve critical on-site problems, with detailed data and customer feedback to prove their reliability:

Case 1: Daqing Oilfield – Drawworks Clutch Slippage

• Oilfield Location: Daqing Oilfield No. 5 Drilling Team

• Equipment: SJ Petroleum Drawworks (Clutch LT500/125)

• Load: 4,500 N·m hoisting torque

• Fault: Clutch slippage during heavy drilling, causing speed fluctuation and reduced efficiency

• Solution: Replace with Clutch LT500/125

• Repair Effect: Torque transmission stabilized, speed fluctuation reduced to ±1 rpm, and continuous operation for 6,200 hours without failure

• Customer Feedback: "The clutch engages smoothly and handles heavy loads easily. It has eliminated our downtime and improved drilling efficiency significantly."

Case 2: Bohai Offshore Oilfield – Pressure Transmitter Signal Drift

• Oilfield Location: Bohai Offshore Oil Platform No. 8

• Equipment: Canrig Throttle Manifold (YPQ-40A Transmitter)

• Load: 35 MPa working pressure

• Fault: Transmitter signal drift (±2.5 MPa), causing inaccurate well control

• Solution: Replace with YPQ-40A Pressure Transmitter

• Repair Effect: Signal accuracy improved to ±0.1 MPa, response time <80 ms, and stable operation for 5,800 hours

• Customer Feedback: "The transmitter provides precise, real-time pressure data. It has solved our control issues and enhanced well safety."

Case 3: Changqing Oilfield – High-Pressure Check Valve Leakage

• Oilfield Location: Changqing Oilfield No. 12 Drilling Team

• Equipment: ZJ30 Drilling Rig (70 MPa DLF70 Check Valve)

• Load: 65 MPa system pressure

• Fault: Check valve leakage, causing pressure loss and system inefficiency

• Solution: Replace with 70 MPa 1” DLF70 High-Pressure Check Valve

• Repair Effect: Zero leakage, pressure maintained at 65 MPa, and continuous operation for 7,200 hours

• Customer Feedback: "The valve is robust and reliable. It has prevented pressure loss and improved our system's performance."

Case 4: Shengli Oilfield – Vibrating Screen Motor Failure

• Oilfield Location: Shengli Oilfield Lijin Drilling Site

• Equipment: SGX-30 Vibrating Screen (SGX-30-18-460/480-6-001 Motor)

• Load: 15 kW power, 1,500 rpm

• Fault: Motor overheating and failure, causing screen downtime

• Solution: Replace with SGX-30-18-460/480-6-001 Vibrating Screen Motor

• Repair Effect: Motor temperature stabilized at 75°C, vibration amplitude <0.5 mm, and continuous operation for 4,500 hours

• Customer Feedback: "The motor runs cool and quiet. It has reduced our maintenance costs and improved screening efficiency."

FAQ (Frequently Asked Questions)

Authority & Enterprise Endorsement

Our spare parts are manufactured in strict accordance with national and industry standards, with authoritative technical support and rigorous quality control. We have long-term partnerships with leading oilfield equipment manufacturers and our products are widely used in Daqing, Bohai, Changqing, and Shengli oilfields, serving over 500 drilling teams and service providers.

Our technical team consists of 25 senior engineers with over 15 years of experience in oilfield equipment maintenance and design, providing on-site technical guidance and troubleshooting support. Exclusive data: Our Clutch LT500/125 has an average service life of 6,500 hours, 1,500 hours longer than standard clutches; the YPQ-40A Transmitter has a signal stability rate of 99.9%, and the 70 MPa DLF70 Check Valve has a zero-leakage rate in over 1,000 installations. Our parts help customers reduce equipment downtime by 600–1,000 hours per year, improving operational efficiency and safety.

Purchase Guide

If you’re facing issues like clutch slippage, signal drift, valve leakage, or premature wear, our high-performance spare parts offer a reliable solution. Whether you need a Clutch LT500/125 for drawworks repair, a YPQ-40A Transmitter for manifold control, or a 70 MPa DLF70 Check Valve for well control, we can provide the right part tailored to your equipment and operational needs.

Contact us with your equipment model, part number, and application details, and our technical team will assist you in selecting the correct components, providing detailed specifications, quality reports, and competitive quotations. We are committed to helping you maximize equipment uptime, reduce maintenance costs, and ensure safe, efficient drilling operations—your trusted partner for oilfield spare parts supply.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619