The oil and gas industries commonly utilize actuators for controlling the flow and regulation of gases, liquids, and crude oil. Sun Yeh specializes in manufacturing electric actuators, offering a range of options for customers. Our linear explosion-proof actuators (LE series), as well as non-spring return and spring return quarter-turn explosion-proof actuators (OME and SE series), are designed to withstand harsh conditions in the oil and gas industry. These actuators are utilized in fluid control, dosing devices in crude oil refineries, and pipeline transport where there is potential for an explosive atmosphere. We provide electric actuators available in enclosures certified by CSA, IECEx, ATEX, TS, JPEx, and CNEx/CCC, making them ideally suited for use in hazardous areas Zones 1, 2, 21, and 22.

Actuation technology plays a pivotal role in the water industry in a wide range of applications, including drinking water and ultrapure water purification, cooling water circuits, chillers, municipal or industrial drainage water treatment, water distribution, and seawater desalination. Sun Yeh offers robust quarter-turn electric actuators (OM, CM, S series) with corrosion-resistant coating NEMA 4X enclosure, and multi-turn actuators (M series) with IP68 enclosures that are durable and can be used in open/close valve applications to divert flow to respond to the treatment requirements and in modulating applications to control the flow to adjust the amount of medium passing through the valve into or out of the treatment plants.

Regardless of the type of energy source from power plants, whether coal-fired, natural gas, nuclear, hydropower, trash-to-energy, wind turbine, or solar power plants, valves, and actuators are used to start and stop the flow, adjust the amount of flow, control the direction of flow, regulate a flow or pressure, and relieve the pipeline pressure when it reaches a certain value. Our electric valve actuators can be used as nuclear valves, pollution control valves, feeding water valves, cooling water valves, chemical treatment, and steam turbine control systems valves. We offer electric valve actuators (OM, S, L, and M series) to withstand the harsh environments of the power industry for use in ventilation systems, cooling systems, fluid control, etc., in power plants.

In modern industrial processes, managing thermal cycles is crucial to ensure efficient operations and maintain optimal equipment performance. Chillers and cooling towers play a vital role in removing excess heat generated during these processes. Sun Yeh offers advanced cooling valve actuators designed specifically for chillers and cooling towers applications, as well as HVAC actuators for thermal cycle management. Our quarter-turn (OM, T, CM series) and linear actuators (L series) are ideal for use in various industries, including refineries, sugar industry, distilleries, chemical industries, pharmaceutical industries, food and beverage, paper mills, shipbuilding, refrigeration, air conditioning, plumbing, and heating equipment.

Due to the limited connection to the atmospheric environment, natural ventilation alone is insufficient to meet the rigorous ventilation requirements of tunnels and underground roads. Sun Yeh offers fire and smoke damper actuators that are applicable for normal operation such as temperature, humidity, and indoor air quality controls or smoke extraction in case of fire to ensure the safety and comfortability of the environment in tunnels and stations. Our OM series quarter-turn and S series spring return quarter-turn electric actuators are suitable to be used in ventilation systems, smoke extraction systems, or emergency shutdowns to control smoke.

According to the United Nations Department of Economic and Social Affairs (DESA), the global population is expected to increase to 9.7 billion in 2050 and could peak at nearly 11 billion around 2100. Increasing food production has been required across the world to supply enough food. Climate change may result in more volatile growing conditions that are less conducive to food production. Increased food demand and dietary changes are likely to contribute to an intensified use of irrigation. Sun Yeh manual valve actuators can be used in agriculture, by the use of various actuated control valves to regulate the flow of water to reduce water waste. Our quarter-turn valve actuators (OM, CM series) are suitable with ball valves or butterfly valves to be installed outdoors in the application of agricultural irrigation and animal husbandry. Additionally, OM quarter-turn actuators allow operating the valves by manual override when there is a power failure for continuous operation without hindrance.