DDF-X series motorized valve is available for central air conditioning and water heating system to control the room temperature. The control valve depends on the paraffin wax propeller drive the spring to reset.The actuator is normally closed when it doesn't work. Compare the temperature of indoor with the set point value, the thermostat will provide a signal to valve open or close. When valve open, the cold or hot water will come into the fan coil to provide the cold or hot air. When achieved the set temperature, the thermostat will cut off the actuator 's power to close valve. So the room temperature always maintains in a comfortable range by the valve's opening and closing. Actuator should be installed after the valve. The installation is very convenient. Actuator installation can be close to the wall to save space. The operating noise is very low. The motorized valve is durable and reliable.
Features:
Body material: forged brass
Stem material: brass
Sealing material: nitrile rubber (NBR)
Working medium: cold/hot water
Fluid temperature: 2°C-94°C
Pressure: 1.6MPa
Ambient temperature: 0°C-65°C, 5-95% RH (non-condensing)
Travel time: 11-15 seconds
Motor torque: >800gf.cm
Specifications:
Model No.
Valve Type
DN
Thread Size
Kvs
Max. differential Pressure kPa
Dimentions
DDF-X-215*DFQ-XA1-220
2-way
15
G1/2
2.2
250
81
21
19
DDF-X-220*DFQ-XA1-220
2-way
20
G3/4
2.6
250
81
21
19
DDF-X-225*DFQ-XA1-220
2-way
25
G1
3.2
250
88
25
23
DDF-X-315*DFQ-XA1-220
3-way
15
G1/2
2.2
250
81
35
19
DDF-X-320*DFQ-XA1-220
3-way
20
G3/4
2.6
250
81
35
19
DDF-X-325*DFQ-XA1-220
3-way
25
G1
3.2
250
92
42
23
Installation Diagram:
|
Serial No. |
Code definition |
Optional range definition |
|
① |
Motorized valve body series |
DDF |
|
② |
Valve body code |
X=Internal thread connection split type motorized valve |
|
③ |
Valve type |
2=2-way valve, 3=3-way valve |
|
④ |
Nominal Diameter |
15=DN15，20=DN20，25=DN25 |
|
⑤ |
Motorized valve actuator series |
DFQ |
|
⑥ |
Actuator code |
XA1=2-wire, XAL1=2-wire economic type |
|
⑦ |
Input power |
220=220VAC, 110=110VAC, 24AC=24VAC |
