Subsidiary Devices play a critical role in modern pipeline operations, complementing hot tapping machines, plugging machines, and completion machines. These devices are essential for safe, efficient, and precise execution of pipeline repairs, line stopping, and hot tapping projects. Xinyu Feihu Pipeline Technical Equipment Co., Ltd. offers a comprehensive range of Subsidiary Devices that ensure pipelines operate seamlessly, even under high-pressure or demanding conditions. With over 20 years of experience, Xinyu Feihu provides solutions to clients worldwide, including in Singapore, the US, the UK, Romania, Indonesia, Chile, and India.
What Are Subsidiary Devices?
Subsidiary Devices are specialized components designed to support primary pipeline machines in various operations. They ensure high levels of safety, reduce operational downtime, and enhance the overall efficiency of pipeline projects. While hot tapping, plugging, and completion machines perform the main functions of pipeline modification or repair, Subsidiary Devices complement these machines by providing precise fittings, seals, valves, and fixtures that make complex operations possible without interrupting service.
These devices are engineered to work together with primary equipment, creating a complete system that handles a wide range of pipeline challenges. They are particularly valuable for high-pressure pipelines, live system modifications, and maintenance tasks that demand zero-leakage performance.
Key Types of Subsidiary Devices
Tapping Fittings
Tapping fittings, including hot tap fittings, split tees, and flange pipe fittings, are essential Subsidiary Devices for creating branch connections on live or existing pipelines. These fittings allow operators to add new pipelines without shutting down the existing system, maintaining uninterrupted operations. Hot tap fittings provide durability and precision, while split tees and flange pipe fittings ensure secure connections even under high-pressure conditions. By integrating these Subsidiary Devices into a pipeline project, engineers can improve operational flexibility and reduce the risk of system downtime.
Sealing Elements
Sealing elements are designed specifically for FD-type plugging machines and represent a critical category of Subsidiary Devices. These elements offer exceptional resistance to high pressures, oil, and chemicals, guaranteeing zero-leakage performance during plugging and maintenance operations. Properly installed sealing elements ensure pipeline integrity, protecting both the system and personnel during maintenance tasks. Their design allows them to withstand extended use and repeated cycles without compromising safety or performance, making them indispensable for demanding pipeline environments.
Wafer Valves
Wafer valves, available in manual and hydraulic versions, are versatile Subsidiary Devices suitable for both hot tapping and line stopping applications. Their large diameters and tight shutoff capabilities make them ideal for controlling fluid flow in pipelines during maintenance or repair tasks. The operational flexibility of wafer valves allows engineers to adjust flow rates or isolate sections of a pipeline with minimal disruption. These valves are built for durability and reliability, ensuring long-term performance in critical pipeline systems.
Cylinder Stopple Fittings and Expanding Sleeves
Cylinder stopple fittings, pre-welded 4-way tees, are essential Subsidiary Devices for use with EFD-type plugging machines. These fittings enable efficient cylinder plugging operations, offering secure sealing and precise placement. Expanding sleeves, also compatible with EFD-type machines, deliver high expansive force to ensure effective sealing even in deformed or irregular pipelines. Together, these Subsidiary Devices enhance the speed and accuracy of plugging operations, reducing operational risk and improving overall project efficiency.
Plugging Heads
Plugging heads are high-performance Subsidiary Devices capable of withstanding pressures up to 100 bar while maintaining a 6x safety factor. They are equipped with a scrap sweeping device and an automatic pressure compensation system to achieve zero-leakage plugging on various types of pipes. Plugging heads ensure safe operation even in demanding environments and are designed to withstand repeated use without compromising performance. Their integration with FD-type and EFD-type machines makes them a cornerstone of pipeline safety and efficiency.
Suspended Stopple Fittings and Repairing Welding Fixtures
Suspended stopple fittings, pre-welded 3-way tees, are specialized Subsidiary Devices designed for suspended plugging operations. These fittings work exclusively with FD-type machines, sealing elements, and plugging heads, providing secure connections even in elevated or challenging pipeline positions. Repairing welding fixtures, another category of Subsidiary Devices, are engineered for high-pressure, long-distance pipelines and can operate at a maximum pressure of 100 bar. These fixtures provide stable support for pipeline repairs, ensuring precision and safety during welding and maintenance tasks.
Benefits of Using Subsidiary Devices
The adoption of high-quality Subsidiary Devices brings multiple benefits to pipeline operations. One of the most significant advantages is improved workflow and operational efficiency. By integrating Subsidiary Devices with primary machines, engineers can execute complex pipeline projects faster and with fewer interruptions.
Subsidiary Devices also enhance safety during high-pressure or live pipeline operations. Their robust design and precise engineering reduce the risk of leaks, spills, or accidents, protecting both personnel and the environment.
Flexibility is another key advantage. With a range of fittings, valves, sealing elements, and fixtures, Subsidiary Devices can adapt to pipelines of various sizes, materials, and configurations. This versatility allows operators to handle diverse challenges without needing multiple specialized machines.
Zero-leakage performance is a critical benefit of many Subsidiary Devices. From sealing elements to plugging heads, these devices are engineered to maintain pipeline integrity during maintenance, repairs, or modifications. This minimizes downtime, reduces costs, and ensures continuous operation of essential systems.
Integrating Subsidiary Devices with Main Machines
Combining Subsidiary Devices with hot tapping machines, plugging machines, and completion machines creates a comprehensive pipeline solution. This integration ensures that each component of the operation works seamlessly, from branch connections to pipeline isolation and repair.
Real-world applications demonstrate how this integrated approach improves operational efficiency. Engineers can perform hot tapping, line stopping, or pipeline repairs without shutting down the system, even on high-pressure or long-distance pipelines. Subsidiary Devices provide the precision, safety, and reliability required for these complex operations, enabling pipelines to function smoothly under demanding conditions.
This all-in-one solution approach also allows project teams to reduce equipment redundancy. By relying on high-quality Subsidiary Devices, operators can standardize tools and procedures, saving both time and resources while maintaining safety and performance standards.
Global Reach and Reliability
Xinyu Feihu has established itself as a trusted supplier of Subsidiary Devices with a global presence. Clients in Singapore, the US, the UK, Romania, Indonesia, Chile, and India rely on Xinyu Feihu for safe, efficient, and reliable pipeline solutions. The company’s commitment to quality, performance, and customer satisfaction ensures that every Subsidiary Device meets stringent safety standards and operational requirements.
Over two decades of experience have enabled Xinyu Feihu to refine its products and engineering practices. Each Subsidiary Device undergoes rigorous testing to guarantee durability, reliability, and performance under challenging conditions. This focus on quality ensures that clients receive dependable equipment that supports both routine maintenance and critical pipeline projects.
Takeaway
Subsidiary Devices are indispensable components for modern pipeline operations. They enhance the performance of hot tapping, plugging, and completion machines, enabling safe, precise, and efficient pipeline maintenance and modifications. By investing in high-quality Subsidiary Devices, pipeline operators gain operational flexibility, zero-leakage performance, and reduced downtime. Xinyu Feihu’s extensive range of Subsidiary Devices provides a complete solution for pipelines worldwide, ensuring safety, reliability, and efficiency for projects of all sizes.
Contact Xinyu Feihu Pipeline Technical Equipment Co., Ltd. to explore Subsidiary Devices designed to streamline your pipeline operations and deliver unmatched performance.
FAQ
1. What are Subsidiary Devices in pipeline operations?
Subsidiary Devices are specialized components that support hot tapping, plugging, and completion machines, enabling safe and efficient pipeline modifications, repairs, and line stopping.
2. How do Subsidiary Devices improve pipeline safety and efficiency?
They ensure zero-leakage performance, provide robust sealing and support, and allow operations to continue without shutting down the pipeline.
3. Which machines are compatible with Xinyu Feihu Subsidiary Devices?
Subsidiary Devices are compatible with FD-type and EFD-type plugging machines, hot tapping machines, and completion machines.
4. Can Subsidiary Devices handle high-pressure or deformed pipelines?
Yes. Sealing elements, expanding sleeves, and plugging heads are specifically designed for high-pressure pipelines and can adapt to deformed pipe surfaces.
5. Where does Xinyu Feihu provide its Subsidiary Device solutions?
Xinyu Feihu serves clients globally, including in Singapore, the US, the UK, Romania, Indonesia, Chile, and India.












