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Electric Thermal Valve

DRF

Product Brief

DRF electric thermal valve is available for controlling central air conditioning and water heating system's opening and closing to control the room temperature. The control valve depends on the paraffin wax propeller drive the spring to reset.The electric thermal valve is normally closed when it doesn't work.If it needs to work, the thermostat will provide a signal of opening,then the electric thermal valve will gets the power to work. Opening the valve,the cold and hot water will come into the fan coil to provide the cold or hot air. when the set temperature is achieved,the thermostat will cut off the electric thermal valve's power,then the reset spring can close the valve to stop the water which flow into the coil. So the room temperature is always maintained within the set range by the valve's opening and closing.

 

Model Selection Table 

Model No. DRQ-1 DRQ-2 DRQ-3 DRQ-4
Rated travel 3mm 3mm 3mm 3mm
Rated thrust 115N 115N 115N 115N
Photo
Order No. Model No. Valve Typ DN Connection 
type
螺栓尺寸 Kvs Dimensions Maximum differential 
pressure 
(KPa)
L H B F
16077 DRF-W-215 2-way 15 Male G1/2 1.7 52 44 - - 250 250 250 250
16078 DRF-W-220 2-way 20 Male G3/4 2.6 56.5 44 - - 150 150 150 150
16079 DRF-W-315 3-way 15 Male G1/2 1.7 52 44 26 - 250 250 250 250
16080 DRF-W-320 3-way 20 Male G3/4 2.8 56.5 44 28 - 150 150 150 150
16081 DRF-W-415 4-way 15 Male G1/2 1.7 52 44 40 113.5 250 250 250 250
16082 DRF-W-420 4-way 20 Male G3/4 2.6 56.5 44 50 101 150 150 150 150
16083 DRF-N-220 2-way 20 Female G3/4 2.6 52 44 - - 150 150 150 150
16084 DRF-N-220A 2-way 20 Female G3/4 2.6 52 44 - - 150 150 150 150
16085 DRF-N-225 2-way 25 Female G1 4.5 63 50 - - 70 70 70 70
16086 DRF-WN-220 2-way 20 Male and 
female
G3/4 2.6 95 48 - - 150 150 150 150
16087 DRF-WN-225 2-way 25 Male and 
female
G1 4.5 105 52 - - 70 70 70 70


Model Selection Table 

 

Order No. Model No. thrust Travel Travel time Product features
16088 DRQ-1B >115N 3mm 3~5min Normally closed, pointer indicating the degree of opening
16089 DRQ-1K >115N 3mm 3~5min Normally open, pointer indicating the degree of opening
16090 DRQ-2K >115N 3mm 3~5min Normally open, pointer indicating the degree of opening
16091 DRQ-3B >115N 3mm 3~5min Normally closed,transparent window indicating the degree of opening
16092 DRQ-3K >115N 3mm 3~5min Normally open,transparent window indicating the degree of opening
16093 DRQ-4B >115N 3mm 3~5min Normally closed,install the valve body through the clamping 
16094 DRQ-4K >115N 3mm 3~5min Normally open,install the valve body through the clamping 




Instruduction of selection