ZZWP-16B Heating type self-operated temperature control valve principle :
ZZWP-16B Heating type self-operated temperature control valve use the principle of liquid heated expansion and incompressible liquid to realize automatic regulation. The 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 and pushes the spool down to close the valve, reducing the flow of the thermal medium.When the temperature of the controlled medium is lower than the set value, the temperature-sensitive liquid shrinks, and the return spring pushes the valve core to open, realizing the temperature balance control.On the contrary, the cooling valve opens above the temperature setting value and closes below the temperature setting value.Three - way valve an inlet, two outlets for the shunt, two inlet an outlet for the confluence.So as to realize automatic control of temperature.
 
ZZWP-16B Heating type self-operated temperature control valve Structure :

 
1. Valve body  2. Heat insulation rack  3. Actuator   4. Temperature scale   5. Temperature-regulating hole   6, catheter    7, temperature-sensing bag, pressure plug and mother    8. Temperature-sensing bag
 
ZZWP-16B Heating type self-operated temperature control valve table:

Used for domestic hot water supply	30－90℃
Used for heating and central air conditioning	40－100℃
Used for deaerator and other production process	80－110℃

ZZWP-16B Heating type self-operated temperature control valve Technical requirement：

Material	Body: ductile iron, cast steel, stainless steel
	Stem/Trim: 304 stainless steel
	Temperature sensing package: 304 stainless steel
Size(DN)	Thread type（15-65）mm、Flange type (15-200)mm
Pressure(PN)	1.6-2.5MPa
Work Temp.	-20-350℃
Temp. Range	28℃-110℃
Tube Length	Normal: 3.2 m（Customized: 5-12m）
Medium	Steam,Hot Water,Hot oil
Control Accuracy	± 2℃（Circulatory system）  ± 5℃（Uncirculatory system）