Tefulong (Shanghai) Technologies Co., Ltd. products

Multi-turn Actuator AVA01 ~ AVA10 suitable for Globe valves, Gate valves, sluice valves, penstock and some dampers. AVA01 ~ AVA10 combined with BA bevel gearbox max can reach 100,000Nm.

Quarter turn Electro-Hydraulic Actuator YKT series is installed on the automation of part turn valve, like ball valves and butterfly valves. Output torque 60Nm~120KNm(45ft-lbf to 88495ft-lbf) Fast response speed(5Hz), high control accuracy(

Quarter Turn Actuator models AVAT/AVATM01 to AVATM06 are designed for automation processes in ball and butterfly valves, offering versatility with the option to integrate a lever. These actuators are engineered to deliver a torque range of 125Nm to 2000Nm (equivalent to 90ft-lbf to 1475ft-lbf), making them adaptable for various industrial applications. The actuators support voltage supplies from 220Vac to 460Vac, suitable for both single and three-phase connections, and are built with an IP68 enclosure to ensure protection against environmental elements. With a class F and optional class H insulation, these actuators boast a robust double-seated structure. For enhanced functionality, optional modulating I/O signal inputs of 4-20mA are available, along with explosion-proof features compliant with ATEX and CUTR standards. They are compatible with fieldbus systems such as Modbus and Profibus, integrating seamlessly into existing automated systems.

The Greatork Indication Gearbox is designed for precise valve position observation, primarily utilized with gate valves, globe valves, and penstocks. This mechanical gearbox allows users to ascertain valve positions regardless of actuator power status, with optional manual or motorized operation. It offers a water-tight classification of IP67, suitable for operations within a temperature range of -20? to 80?. Additionally, variations with IP68 ratings or for lower temperatures are available based on specific customer needs. It`s an ideal solution for environments where maintaining accurate valve positioning is critical, even under power failure conditions.

Greatork specializes in industrial gearboxes used for various valve and damper operations. The ZJY side mount gearbox is designed for the ease of manual operation and actuator product installations, commonly applied to butterfly valves, ball valves, and dampers. It supports a maximum torque of 100,000Nm, is water-tight to IP65 standards, and operates in temperatures ranging from -20? to 80?. Another product, the dual input gearbox, is suited for gate valves, globe valves, and penstocks with a torque capacity of 6,800Nm and ratios from 2.6:1 to 7:1, allowing one actuator to control two gearboxes simultaneously. The chain bevel gearbox is used on gate and globe valves, offering a torque range from 360Nm to 6000Nm and a ratio range from 2.35 to 23, compliant with ISO5210 standards. The partial wheel worm gearbox caters to high-torque quarter-turn applications, supporting up to 400,000Nm with ratios ranging from 40:1 to 5000:1 and operable in temperatures as low as -60?.

The Mechanical Gas Turbine Flow Meter is designed for optimal flow measurement and incorporates a sleeve shape that allows a single size to accommodate various flow rates, making it convenient for upgrades and replacements. This meter integrates advanced sensors and microprocessors to provide accurate measurements and has the capability to automatically compensate for temperature, pressure, and compressibility factors. It features low initial flow resistance, minimal pressure loss, and high anti-vibration characteristics. Additionally, its modular structure facilitates easy maintenance and the possibility of integrating additional features like a volume correction instrument, an LCD screen, and GPRS remote signal communication for enhanced intelligence.

The Double Display Gas Root Flow Meter from Greatork incorporates a mechanical counter to log the total flow rate over time, ensuring longevity with its lifetime lubricated design. The flow meter is augmented with photoelectric isolation for enhanced operational consistency across diverse weather conditions. Known for its high accuracy, this meter is designed to serve a broad spectrum of industrial applications, including city gas detection and measurement. The device offers a remarkable range ratio reaching 1:300 and maintains an accuracy within class 1 standards. It supports a minimal initial flow as low as 0.01 m3/h, with pressure loss ranging from 0.1KPa to 0.78KPa. Greatork's commitment to quality is evident in the integration of high-grade components, offering high reliability and effectiveness for precise flow monitoring across various demanding environments.

The mechanical gas root flow meter by Greatork is a cost-efficient flow measurement instrument primarily designed for applications where basic functionality is sufficient. This device, devoid of advanced electronic modules or displays, emphasizes fundamental mechanical measurements, thus reducing costs for users who do not require complex integrations. It boasts features like high accuracy, reliability, and a wide measurement range ratio, while operating with a minimal initial flow. Its robust construction ensures consistent performance across various conditions, catering particularly to users who prioritize reliability and simplicity in flow measurement without the necessity for digital components. This meter is ideal for operations emphasizing straightforward usage, offering a practical balance of performance and cost-effectiveness.