QBO3A 
Specifications
| Model | DF220 |
|---|---|
| Valve Type | 2-way motorized ball valve |
| Nominal Diameter | DN20 (3/4") |
| Body Material | Brass forging |
| Power Supply | AC 220 V ±10 %, 50/60 Hz |
| Power Consumption | 3 VA / 6 VA (open/close only) |
| Motor Type | Synchronous / reversible synchronous |
| Running Time | 15 s |
| Output Torque | 15 kgf·cm |
| Nominal Pressure | 1.6 MPa |
| Close-off Pressure | < 0.6 MPa |
| Leakage | ΔP < 0.4 MPa (bubble-tight) |
| Connection | G-thread (BSPP) |
| Medium | Chilled/hot water or 50 % ethylene glycol |
| Medium Temperature | 2 °C ~ 90 °C |
| Lead Wire | 700 mm |
| Dimensions (L × H) | 68 mm × 105 mm |
| Kv Value | 4.0 |
| IP Rating | IP54 |
Product Description
Product Overview
DF220 is a two-way motorized ball valve for HVAC water systems. It combines a synchronous electric actuator with a brass-forged valve body to deliver reliable on/off flow control for chilled water, hot water and 50 % ethylene-glycol mixtures. The built-in limit switch cuts power automatically at full open or full close, extending actuator life and reducing energy consumption.
Key Features
- Two-way brass-forged ball valve for HVAC water systems
- Synchronous / reversible synchronous motor actuator
- Automatic power-off at full open and full close positions
- Quick 15-second stroke time for fast response
- Standard G-thread pipe connection for easy installation
- Compact body: DN20 × 3/4″ × 68 mm (L) × 105 mm (H)
- Normally installed at factory-open position; other positions available on request
Specifications
- Model: DF220
- Valve type: 2-way motorized ball valve
- Nominal diameter: DN20 (3/4″ BSP)
- Body material: Brass forging
- Actuator housing: ABS with blue cover
- Power supply: AC 220 V ±10 %, 50/60 Hz
- Power consumption: 3 VA (running) / 6 VA (only during open/close)
- Motor type: Synchronous / reversible synchronous motor
- Running time: 15 s
- Output torque: 15 kgf·cm
- Nominal pressure: 1.6 MPa
- Close-off pressure: < 0.6 MPa
- Leakage class: Pressure difference < 0.4 MPa (bubble-tight)
- Connection: G-thread (BSPP) pipe thread
- Medium: Chilled water, hot water or 50 % ethylene-glycol solution
- Medium temperature: 2 °C ~ 90 °C
- Lead wire length: 700 mm
- Dimensions (L × H): 68 mm × 105 mm
- Kv value: 4.0
- IP rating: IP54
Applications
- Chilled/hot water on/off control in fan-coil units
- Air handling unit (AHU) water coil circuits
- Underfloor heating and cooling manifolds
- Heat pump and boiler flow switching
- Compatible with DNARENS AC801 / AC803 / AC806 / AC808 series controllers
Installation Notes
- Mount the actuator above the horizontal pipe centerline.
- Use standard G-thread fittings only; do not use tapered threads.
- Flush the pipeline before installation to avoid debris damage.
- Do not wrap the actuator inside pipe insulation.
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