Shinjo Valves-ZZW Self Operated Regulator

Shinjo Valves-ZW Self Operated Temperature Regulator, Size DN32mm ~ DN350mm ZZW Self operated temperature control valve includes a double edged sword: temperature sensor and globe valve.And self operated temperature control valve doesn't need exterior energy,and uses the key of liquid thermal expansion and liquid incompressibility to attain automatic control.The liquid expansion within the temperature sensor is uniform, therefore the self operated temperature control valve is proportional control.The ZZW self actuated temperature control valve working principle: Based on the action type and application, the self operated temperature control valve is split into heating type, cooling type and mixing(/diverting) type. Place the temperature sensor in to the medium that should control the temperature. (1) Once the temperature from the medium increases, the liquid within the sensor expands, the pressure overcomes the spring thrust, pushes the valve plug downward, and also the valve is commonly closed, therefore lowering the flow rate from the heat medium. (2) Once the medium temperatures are less than the set value, the temperature sensitive liquid shrinks, and also the spring pushes the valve plug to spread out, growing the flow rate from the heat medium, so the temperature from the controlled medium has a tendency to rise. The cycle is repeated so the temperature worth of the controlled medium is definitely inside the allowable selection of the set temperature. ZZW Self Operated Temperature Regulator The Features of Self Actuated Temperature Control Valve: 1. The self actuated temperature control valve is small in size, light in weight and easy to install. 2. Self operated temperature control valve has a wide range of applications,such as steam,hot water,hot oil,cooling water,etc. 3. Accurate and reliable, long service life, easy temperature adjustment. 4. Automatic adjustment by the principle of liquid thermal expansion and liquid incompressibility. 5. The liquid expansion in the sensor is uniform expansion. 6. Control action type of self actuated temperature control valve is proportional control. Technical Parameters of Self Operated Temperature Control Valve: 1.Nominal diameter:DN15~DN200; 2.Nominal pressure:PN16,PN25; 3.Valve body type:single-seat,double-seated,cage guide,three way; 3.Suitable medium:steam,hot water,hot oil,cooling water,etc; 4.Application medium temperature:-20â??~350â??; 5.Temperature control range:0~70â??/50~120â??/100~170â??/150~220â??/200~270â??; 6.Allowed overload value:add 50â?? to the each temperature control range above; 7.Ambient temperature:-40â??~+80â??; 8.Adjustment accuracy:�±5%; 9.Pipe length:3.5~4.5m,and if you have special requirements,please specify it. 10.Pressure balancing component: springs,bellows. Dimensions of ZZW Self Operated Temperature Regulator