The ZZWP self operated temperature regulating valve is an energy-saving device that relies on the temperature changes of the regulated medium to automatically adjust without the need for external energy. The product types include: ZZWP single seat self operated temperature regulating valve, ZZWM sleeve self operated temperature regulating valve, and ZZWN double seat self operated temperature regulating valve. The modes of action include heating (B type, when the temperature of the measured medium increases, the temperature valve is closed) and cooling (K type, when the temperature of the measured medium increases, the temperature valve is opened)

characteristic

1. No need for external energy, utilizing the temperature changes of the controlled medium for automatic adjustment

2. Wide temperature setting range for easy adjustment

3. Equipped with a compensation device for measuring and controlling medium pressure fluctuations, which can improve control accuracy

4. The controller has proportional adjustment characteristics, smooth operation, and no noise

5. Equipped with over temperature and overload protection device, with high reliability

Therefore, this product can be widely used in various mechanical and electrical equipment such as heating, water supply, air conditioning, boilers, bubble furnace, and various heat exchanges. Realize automatic temperature difference adjustment. It can also be used for on-site adjustment in continuous production processes such as chemical, petroleum, electricity, metallurgy, etc., which can save energy and base investment, reduce maintenance and workload.

operational principle

It works based on the principle of liquid volume expansion when heated. The temperature detection element temperature bulb is inserted into the measured medium. When the temperature rises, the working liquid volume inside the temperature bulb sharply increases, causing the pressure in the sealing chamber to increase. The pressure on the bellows moves downwards, pushing the spring to move downwards, thereby pushing the valve stem and valve core towards the valve seat. The valve is closed to make the temperature of the measured medium close to the set value, and the valve core stays in a new position, The displacement of the valve core is proportional to the change in temperature of the measured medium, forming a certain proportional adjustment characteristic.