Self-supporting temperature regulating valve automatically adjusts the valve opening according to the change of the controlled medium temperature, and automatically adjusts the temperature without external energy. It is suitable for various heat exchange occasions with steam, hot water, hot oil and other media. It is widely used in heating and air conditioning, domestic hot water, petrochemical, electricity, electromechanical, textile, rubber, food and other industries.

Working principle

The self-supporting temperature regulating valve uses the principle of liquid expansion due to heat and liquid incompressibility to achieve automatic adjustment. The liquid expansion in the temperature sensor is uniform, and its control function is proportional regulation. When the temperature of the controlled medium changes, the volume of the temperature-sensitive liquid in the sensor expands or contracts. When the temperature of the controlled medium is higher than the set value, the temperature-sensitive liquid expands, pushing the valve core downward to close the valve, reducing the flow of the heat medium. When the temperature of the controlled medium is lower than the set value, the temperature-sensitive liquid contracts, and the reset spring pushes the valve core to open, increasing the flow of the heat medium.

Product Features

★ Small size, light weight, easy installation, accurate and reliable, long life

★ Passive operation (normal operation without power supply and air source)

★ The valve body uses a bellows balance element to overcome the high pressure difference to close and open

★ The valve body seal uses a V-type high-temperature sealing component to prevent the possibility of the valve stem being too tight or leaking

★ Temperature sensing time: 120 seconds for the first action, 30 seconds thereafter, control accuracy: ±2℃

★ Automatic adjustment is achieved by using the principle of liquid expansion due to heat and liquid incompressibility

★ The liquid in the sensor expands uniformly

Technical parameters

Nominal pressure: PN16

Stroke: DN40-DN100: 20mm

           DN100-DN150: 40mm

Leakage: 0-0.05Kvs

Temperature setting range: +35-+110℃

Medium temperature: +1-180℃

Valve disc features: quick-opening proportional adjustment

Material: cast iron, stainless steel

Valve stem seal: combined special seal

Ordering instructions

★ When ordering, please provide detailed operating conditions, nominal diameter, nominal pressure, working pressure, heat medium pressure and temperature, controlled medium and temperature requirements.

★ The general conduit length is 3.5m. If you have special requirements, please indicate.

★ If you need other special-purpose temperature control valves, please contact the sales manager directly.