28mm 2 Port Motorised Valve
It is usually equipped with an electric actuator and can be seamlessly integrated with the thermostat. When the thermostat detects that the temperature needs to be adjusted, the electric valve automatically responds to the signal, opens or closes the valve, and controls the flow of liquid to the fan coil or radiator, thereby achieving efficient zone temperature management and precise environmental control.
●Valve body material: forged brass
●Valve stem material: brass
●Seal material: nitrile rubber (NBR)
●Working medium: cold/hot water
●Fluid temperature: 5~95℃
●Pressure: 1.6MPa
●Ambient temperature: 0~65C Maximum relative humidity is non-condensing
●Travel time: 11~15 seconds
●Motor torque: >800gf.cm
Technical Parameters
| Ordering model | Product model | Valve type | Diameter | Thread size | Kv value | Maximum closing pressure difference kPa |
Dimensions | ||
| L | W | H | |||||||
| 12000 | DDF-X-215*DFQ-XA1-220 | 2 port | 15 | G12 | 2.2 | 250 | 81 | 21 | 19 |
| 12001 | DDF-X-220*DFQ-XA1-220 | 2 port | 20 | G3/4 | 2.6 | 250 | 81 | 21 | 19 |
| 12003 | DDF-X-225*DFQ-XA1-220 | 2 port | 25 | G1 | 3.2 | 250 | 88 | 25 | 23 |
| 12008 | DDF-X-315*DFQ-XA1-220 | 3 port | 15 | G12 | 2.2 | 250 | 81 | 35 | 19 |
| 12009 | DDF-X-320*DFQ-XA1-220 | 3 port | 20 | G3/4 | 2.6 | 250 | 81 | 35 | 19 |
| 12010 | DDF-X-325*DFQ-XA1-220 | 3 port | 25 | G1 | 3.2 | 250 | 92 | 42 | 23 |
| Note: The above table is the commonly used recommended models, please consult for details. | |||||||||
Main features
28mm large diameter design: suitable for handling higher flow water systems, able to meet higher flow requirements in residential and commercial buildings.
Electric control: remote control through electric actuators, which receive signals from thermostats or building management systems to achieve automatic switching.
Precise zone control: used in conjunction with thermostats or other control systems to automatically adjust water flow, thereby achieving independent temperature control in different areas.
Durable material: usually made of brass or stainless steel materials, with extremely high corrosion resistance and high temperature resistance, suitable for harsh working environments.
Flexible installation: standard 28mm interface design, easy to install in new or renovation projects, suitable for a variety of piping systems, flexible and convenient installation.
FAQ
1.Does the electric actuator need to be lubricated regularly?
Usually not. The electric actuator is designed to be maintenance-free and the internal mechanical parts are pre-lubricated, but it is recommended to check its operation regularly.
2.Can the valve be installed in underground pipes?
Yes, but it is recommended to provide waterproof protection for the electric actuator to ensure that the actuator is not affected by humid environments. If installed in a humid area, a model with a higher protection level (such as IP65) should be selected.
3.Can the 28mm 2 port motorised valve operate for a long time in high-hardness water?
High-hardness water may cause scale accumulation, which will affect the performance of the valve. It is recommended to clean the system regularly or install a water softener to extend the life of the valve.
4.How to determine when the valve needs to be replaced?
If the electric valve opens or closes slowly, the noise increases, or there is fluid leakage, it may be necessary to check the actuator and seals and consider replacing them.
5.Does the valve support automatic reset function?
Some 28mm 2 port motorised valves are equipped with automatic reset function, which automatically closes the valve when the power is off to prevent system loss of control.
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