Electric two-way valve - the scope of application and product features 
 (1) is used to control the pipeline of cold water or hot water air conditioning system on or off, to achieve the purpose of the control room temperature. 
 Hysteresis synchronous motor drive from single valve spring return, normally closed valve does not work in an open signal, provided by the thermostat, when the need to work, the electric valve connected to AC power and the action. 
 3 .. Open the valve, chilled water or hot water into the fan coil air-conditioning or heating the room when the room temperature reaches the thermostat settings, thermostat electric valve power, the return spring of the valve to close , thus cutting off the flow of the fan coil valve closed and opened, the room temperature is always maintained at the thermostat set temperature range. 
 Electric valve drive and valve with screw connection, after installation of the valve, then install the drive. Site assembly, flexible and convenient wiring. The graphic design of the drive close to the wall installation, small footprint, a reliable, low working noise, reliable operation of the hot and humid environment and can often concealed fan coil unit. The actuator selection of cast aluminum brackets and plastic shell, small size, light weight 
 The ★ selection of permanent magnet synchronous motor with hysteresis clutch institutions, with the reliable self-protection function 
 ★ Suitable for a variety of control signals: incremental (floating point), voltage (0 ~ 10V), current (4 ~ 20mA) 
 ★ 0 ~ 10V or 4 ~ 20mA feedback signal (optional) 
 ★ transmission gear metal gear, greatly improving the life of the drive 
 ★ low power consumption, power output, noise 
 ★ body cast copper, cast iron, cast steel, stainless steel, a variety of materials to choose from to suit the requirements of different medium and temperature 
 ★ body, threaded connections and flanges connecting the two, easy to install, its structure conforms with international standards IEC 
 ★ body structure in the form of two-way valve (single seat), two-pass balance valve (balanced), three links to the confluence of three shunt valve 
 It is divided into two kinds of direct-acting and pilot operated. 
 Electric two-pass valve - debug 
 Cut off the power supply and installation must be carried out by professional and technical personnel. The flow direction must be indicated on the valve body in the same direction. The body tube to be located in the plate above the water tray in order to ensure a drip when you fall into then water dish. Body and the drive must be installed in the vertical direction ± 60 ° C within the above it should have at least 3 [1] 0mm space for disassembly. And around pipes, equipment, buildings must maintain a sufficient space for maintenance operations, must be installed on the maintenance staff could be reached to place manholes. The valve body is installed and to install the drive and piping pressure test. If the drive has been mounted to the valve body, then the force must not drive in the process of installation and commissioning, otherwise it will damage the drive. Installed and check the correct power debugging. Should be observed for at least three complete operating cycle of the drive, make sure that all parts correctly so far. After anhydrous eligible debugging, and then through the water test. System up and down the water pressure differential must be strictly controlled in less than 0.15MPa, in order to ensure the effectiveness of electric two-way valve on the flow switch. 
 Technical parameters of the electric two-way valve 

 Products introduced the SFD series electric valve SFD1 of series of electric valve 
 Material brass body, stainless steel base, aluminum casing brass valve body, valve core, sealing butterfly, stainless steel stem and spring 
 May bid pressure (MPa) 2.5MPa 
 Body connection standard cylindrical pipe thread 
 Applicable media chilled water, hot water or low pressure steam 
 Applicable to the liquid temperature of 200 ℃ -105 ℃ 
 Ambient temperature and humidity, 0 ° C -50 ° C no condensation 
 Flow control switch 
 Drive power AC220V (+10.15), 50Hz power ≤ 5W 
 Motor category hysteresis synchronous motor, and speed 500r/min 
 The whole travel time to open six seconds off 4 seconds to open eight seconds off 5 seconds 
 Models and technical parameters of the drive specifications 

 Product Type Rated voltage power driver with SRV2000 valve with operating time NW 
 SRA2100-220 AC220V ± 10 7W electric motor drives, 
 Valve spring return full-time: about 10 seconds after power 
 Closing time: about 5 seconds after power 0.3Kg 
 SRA2100-110 AC110V ± 10 
 SRA2100-24 AC24V ± 10 
 Models and technical parameters of the copper valve specifications 

 Product Type valves 
 Form of connection 
 Thread flow coefficient 
 (KV) Close the pressure difference 
 (MPa) Working 
 Fluid 
 Temperature environment 
 Temperature storage 
 Temperature pressure 
 (MPa) 
 SRV2200-15 normally closed two way valve G1, / 2 1.5 0.25 Freeze / 
 Hot water 2 ~ 94 ℃ 0 ~ 60 ℃ 
 The maximum relative 
 Humidity 
 Condensing -20 ~ 65 ℃ 
 The maximum relative 
 Humidity 
 Not condensing 2.5 
 SRV2300-15 shunt three-way valve G1 / 2 1.5 0.25 
 The SRV2200-20 normally closed two way valve G3 / 4 2.5 0.10 
 SRV2300-20 shunt three-way valve G3 / 4 2.5 0.10 
 The SRV2200-25 normally closed two way valve G1 4.8 0.06 
 Shunt three-way valve G1 SRV2300-25 4.8 0.06 
 Motorized two-way valve mounting dimensions 

 Model Size (mm) Weight (Kg) 
 A B 
 SRV2200-15 55 113 0.60 
 SRV2300-15 55 128 0.60 
 SRV2200-20 66 124 0.65 
 SRV2300-20 66 137 0.65 
 SRV2200-25 90 129 0.70 
 SRV2300-25 90 145 0.70