With the reform of the heating system, household heat metering and sub-room temperature control have entered the implementation phase. The installation of temperature control valves on radiators has become widespread. Using these valves for sub-room temperature control not only maximizes energy conservation but also meets individual users' needs for indoor temperature regulation. This is a beneficial measure for both the country and its people. However, choosing the right temperature control valve is not always straightforward for users. If the product is not selected correctly, it may not meet the requirements and could even lead to unnecessary economic losses.
Thermostatic valves are devices installed on the water supply pipe of a radiator to regulate flow and temperature. They come in two main types: manual and automatic. Automatic thermostatic valves, also known as self-regulating or thermostatic valves, consist of a temperature sensor, an actuator, and a special valve body. The valve body typically comes in straight-through or angle styles, with two-way valves being most common. These are used in double-pipe systems or specially designed single-pipe systems.
In recent years, three-way and four-way valves have been developed for single and double-pipe systems, with four-way valves becoming more popular in imported products, such as the GIACOMI-NI model. These valves are versatile, suitable for various radiator types and pipe configurations, including concealed connections.
Manual and automatic thermostatic valves operate differently. Manual valves use a spiral lift mechanism controlled by a handle, while automatic valves feature a self-resetting linear movement. Under normal circumstances, they are not interchangeable. However, some universal designs combine both functions, allowing users to switch between manual and automatic modes. This is particularly useful in China, where developers often install these hybrid valves to save initial costs and allow future upgrades.
For example, some manufacturers offer a dual-adjustment thermostat valve, like the Jiekemini model from Italy, which allows users to set room temperatures easily. This type of valve offers flexibility and practical value, making it a top choice in the global HVAC market.
However, the complexity of choosing between manual and automatic valves creates opportunities for unscrupulous salespeople. Some vendors may misrepresent simple adjustment handles as dual-function valves, which can be dangerous if used long-term. These temporary handles are often made of plastic and can wear out quickly under pressure, leading to inefficiency and potential damage.
Jiekemini’s dual-adjustment valve, on the other hand, is designed for durability. Its trapezoidal thread (4.5mm pitch) ensures smooth operation over time, unlike standard triangular threads (1.5mm pitch), which are less reliable for frequent use.
Automatic thermostatic valves generally consist of a valve body and a head. The body is usually made of copper castings or forged brass. Forged bodies are stronger and more durable, though more expensive. Cast bodies are cheaper but may have defects. Choosing a high-quality body is essential for long-term performance.
The valve head contains a temperature sensor, either liquid-based or solid-state. Liquid sensors are more sensitive but require more space and are costlier. Solid-state sensors, especially wax-based ones, are widely used and perform well in HVAC systems. Jiekemini uses patented fast-clamp connections and PTFE-sealed joints, improving installation efficiency and sealing reliability.
In summary, selecting the right thermostatic valve depends on your budget and future needs. If you want a basic solution without future upgrades, go for a manual valve. For flexibility, choose a dual-function valve. For a complete, long-term solution, opt for an automatic one. Jiekemini offers a range of high-quality options that balance performance, cost, and convenience, making it an ideal partner for any heating project.
Construction Hoist
Construction Hoist (also called Building Hoist, Passenger Hoist, Construction Material Hoist, Construction Passenger Hoist) are an efficient and safe means of transporting people and materials on construction site. They help increase productivity and safety, thereby saving time and money.
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