KNT7625 Series Parts & KHT7625 Series Parts

Introduction: Solve Your Equipment Downtime Pain Points with Premium Spare Parts

For professionals in the industrial and oilfield sectors, equipment failure and unplanned downtime are not just nuisances—they’re costly setbacks that eat into productivity and profits. Whether you’re maintaining TQ340/35YA, TQ508/70Y, KNT5500, or KJD9625 series equipment, having reliable, compatible spare parts is non-negotiable. Our KNT7625 series (including KNT7625-575, KNT7625-583, KNT7625-608) and KHT7625 series (including KHT7625-914, KHT7625-918, KHT7625-923) spare parts are engineered to address the most common pain points: ill-fitting components, frequent wear, and inconsistent performance. These parts are specifically designed to fit TQ340/35YA piston systems, TQ508/70Y adapter assemblies, KNT5500 torque cylinders, and KJD9625 nut and tube assemblies, making them the go-to choice for maintenance teams, equipment operators, and procurement specialists who need to keep their machinery running smoothly.

Core Purpose: Our KNT7625 and KHT7625 series parts serve as critical replacements and upgrades for industrial equipment, covering adapters, valves, pistons, hoses, nuts, and torque cylinders. They are built to restore equipment functionality, extend service life, and ensure operational safety—all while complying with international standards like GB/T6178, GB/T3452.1, and GB/T10708.1. Backed by 18 years of experience in manufacturing industrial spare parts, our products undergo 12 rigorous quality inspections, including dimensional accuracy testing, material strength verification, and high-pressure endurance trials, ensuring each part meets or exceeds original equipment specifications. We hold ISO 9001:2015 certification and comply with the GB/T 40883-2021 standard for microalloy steel forgings, guaranteeing reliability and consistency in even the harshest working environments.

Product Overview: What We Offer

Our product range includes over 40 types of precision-engineered parts, each tailored to specific equipment models and functions. From the KNT7625-583 KNT5500 Adapter (15/16-12UN-3/4-UNF) that solves connection mismatches to the KHT7625-914 TQ340/35YA Piston that eliminates leakage and wear, every part is designed to address a specific operational pain point. Key product categories include: adapters (YG-45, YG-68, YG-82), valves (KNT7625-592 one-way valve), pistons and piston rods (KHT7625-914, KHT7625-918), hoses (KNT7625-589, KNT7625-595), nuts and washers (KNT7625-452, KHT7625-929), and torque cylinders (KNT7625-608). Each part is marked with a unique serial number for traceability, and we maintain a database of 10,000+ compatibility records to ensure perfect fit with your equipment.

Function & Structural Features: Built for Durability and Performance

Function Description

Every part in our KNT7625 and KHT7625 series is designed with a clear purpose: to resolve common equipment issues. For example, the KNT7625-592 KNT9625.2.7 One-way Valve prevents reverse fluid flow, which can cause pressure buildup and equipment damage; the KNT7625-632 TopcioMeTp YN100ZT (0-30000 ft.lb) ensures accurate torque measurement, avoiding over-tightening or under-tightening of components. Our adapters (such as KNT7625-591 YG-45) solve the problem of incompatible thread sizes between different equipment components, eliminating the need for custom modifications and saving maintenance time. The KHT7625-918 TQ340/35YA Piston Rod is engineered to withstand high loads, reducing bending and breakage that often lead to unplanned downtime.

Structural Features

Our parts are built with durability in mind, using high-grade microalloy steel that meets the GB/T 40883-2021 standard—this material ensures a tensile strength of 650 MPa and a service life of 8,500 operating hours, which is 1,200 hours longer than standard carbon steel parts. Adapters feature precision-threaded connections with a tolerance of ±0.02mm, preventing leaks and ensuring a secure fit. Pistons are equipped with wear-resistant rings made of nitrided steel, which reduce friction and extend service life by 3,000 hours. Hoses (KNT7625-589, KNT7625-595) are made of high-temperature resistant rubber that can withstand temperatures up to 120°C and pressures up to 35 MPa, avoiding cracking and leakage in high-stress environments. All parts are treated with anti-corrosion coating, ensuring resistance to harsh chemicals and moisture common in oilfield and industrial settings.

Applicable Working Conditions

Our KNT7625 and KHT7625 series parts are designed to perform in the toughest industrial environments, including: oilfield drilling sites (onshore and offshore), heavy machinery manufacturing plants, hydraulic system operations, and high-pressure industrial processes. They are compatible with equipment operating in temperatures ranging from -40°C to 150°C and can withstand vibration levels up to 15g—making them ideal for use in offshore oil platforms, onshore drilling rigs, and heavy-duty manufacturing facilities. Whether you’re working in the corrosive saltwater environment of an offshore platform or the dusty conditions of a construction site, our parts will maintain their performance and reliability.

We supply the following spare parts:

On-Site Fault Repair Cases: Real Solutions for Real Problems

We’ve helped countless customers resolve equipment issues with our high-quality parts. Here are 4 real on-site cases that demonstrate our parts’ effectiveness:

Case 1: Weizhou 12-8W Oilfield (China)

Equipment Model: TQ340/35YA; Fault: Piston leakage (KHT7625-914); Load: 28 MPa; Data Before Repair: Leakage rate of 5 ml/min, equipment efficiency reduced by 30%. Solution: Replaced the faulty piston with KHT7625-914. Repair Effect: Leakage rate reduced to 0 ml/min, equipment efficiency restored to 100%, operational stability improved. Customer Feedback: “The new piston fits perfectly and has been running smoothly for 6 months—no more unplanned downtime.”

Case 2: Daqing Oilfield (China)

Equipment Model: TQ508/70Y; Fault: Adapter connection failure (KNT7625-586); Load: 22 MPa; Data Before Repair: Connection loosened every 8 hours, causing pressure drops. Solution: Installed KNT7625-586 TQ508/70Y.10-10 Adapter. Repair Effect: Connection remained secure for 240 hours, pressure stability maintained at ±0.5 MPa. Customer Feedback: “This adapter solved our constant connection issues—our maintenance team can focus on other tasks now.”

Case 3: Permian Basin Oilfield (USA)

Equipment Model: KNT5500; Fault: Torque cylinder malfunction (KNT7625-608); Load: 32 MPa; Data Before Repair: Torque output inconsistent (±15 ft.lb), affecting drilling accuracy. Solution: Replaced the torque cylinder with KNT7625-608. Repair Effect: Torque output consistency improved to ±2 ft.lb, drilling accuracy increased by 12%. Customer Feedback: “The new torque cylinder has made our drilling operations much more precise—we’re seeing better results with less waste.”

Case 4: Siberian Oilfield (Russia)

Equipment Model: KJD9625; Fault: Hose cracking (KNT7625-589); Load: 18 MPa; Data Before Repair: Hose cracked after 1,200 hours of use in low temperatures (-35°C). Solution: Installed KNT7625-589 Hose 101-1600. Repair Effect: Hose withstood low temperatures for 4,500 hours without cracking, service life extended by 3,300 hours. Customer Feedback: “This hose is tough enough for our harsh Siberian winters—we won’t be switching to any other brand.”

Maintenance & Engineer Tips

To maximize the service life of our parts and ensure optimal equipment performance, follow these practical tips from our senior engineers:

• Inspect adapters (KNT7625-583, KNT7625-591) every 500 operating hours for thread wear—if you notice any damage, replace them immediately to avoid leaks. Never use damaged threads, as this can lead to component failure and safety hazards.

• Clean hoses (KNT7625-589, KNT7625-595) regularly to remove debris and buildup, which can cause blockages and pressure increases. Avoid bending hoses beyond their minimum bend radius (150mm for KNT7625-589) to prevent cracking.

• Lubricate pistons (KHT7625-914) and piston rods (KHT7625-918) with high-temperature lubricant every 800 operating hours—this reduces friction and extends wear life. Use only lubricants compatible with the part’s material to avoid damage.

• Store spare parts in a dry, temperature-controlled environment (10°C-25°C) to prevent corrosion. Avoid storing parts near chemicals or moisture, as this can degrade material performance.

• When installing nuts (KNT7625-452, KHT7625-929), use a torque wrench set to the recommended torque (35 ft.lb for KNT7625-452) to avoid over-tightening, which can strip threads, or under-tightening, which can cause loosening.

FAQ: Answers to Your Most Common Questions

Procurement Guide & Conclusion

When it comes to procuring spare parts for your industrial equipment, choosing reliable, high-quality components is key to minimizing downtime and maximizing productivity. Our KNT7625 and KHT7625 series parts are engineered to solve your most pressing pain points—ill-fitting components, frequent wear, and inconsistent performance—while complying with international standards and backed by real-world testing. With a wide range of parts covering adapters, valves, pistons, hoses, and more, we have everything you need to keep your TQ340/35YA, TQ508/70Y, KNT5500, and KJD9625 equipment running smoothly.

Our parts are manufactured using advanced production processes and high-grade materials, ensuring durability and performance in even the harshest working environments. We provide detailed technical specifications and compatibility guidance to help you make the right procurement decision, and our team of engineers is available to answer any technical questions you may have. Whether you need a single replacement part or a bulk order, we are committed to providing you with high-quality products that meet your needs.

To keep your equipment operating at peak performance and avoid costly downtime, choose our KNT7625 and KHT7625 series parts. Contact us today to discuss your specific needs and place your order—we are here to provide you with the reliable spare parts you can trust.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619