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 

Instruduction of selection