Ductile iron motorized control valves of VF730/750 and NL800/870 series apply to HVAC and building automation systems. Once the motorized control valves receive signals transmitted by computers or other devices, they can then adjust temperature, pressure and control system parameters such as flow rate and liquid level. The valves are mainly used to convey mediums such as cold water, hot water, and ethylene glycol solution.
Product Features
Adopt the AC synchronous hysteresis clutch motor. When the limited position is reached, the hysteresis clutch disengages the motor's output shaft from the transmission part to protect the motor.
High-precision control offers precise actions.
Low power consumption and low noise.
Have the self-adaptive valve travel function.
Multiple signal controls: Increment/floating-point signal, voltage 0 - 10 V, current 4 - 20 mA.
ABS shell and die-cast aluminum bracket with the advantages of small size and light weight.
Easy installation and maintenance.
Technical Parameters
Valve Type:Two-way Valve/three-way Valve
Material:Shell:ductile iron; disc/stem: stainless steel;Sealing: PTFE
Working Pressure:1.6 Mpa/2.5 Mpa
Medium:cold water, hot water, and the aqueous solution of ethylene glycol (concentration within 50%)
Medium Temperature:-10℃ ~ 120℃/-10℃ ~ 180℃ with a heat sink
Flow Characteristic:Equal percentage curve/equivalent linear
Leakage Volume:Below 0.02% of kv value
End Type:Flanges (ANSI B16.1/16.5 or EN1092)
Actuator Parameters
| Item | Performance parameters | |
| Model | VF series(incremental control model) | NL series (proportional adjustment model) |
| Power Supply | AC24VAC/220VAC±10%,50Hz/60Hz | |
| Motor | AC synchronous motor | |
| Force | 1000N,1500N,3000N | |
| Power Consumption | 6-18VA | |
| Operating Speed | 1¼″-2″ 0.20 mm/s (1000 N)2½″ 0.25 mm/s (1500 N)4″-8″ 0.32 mm/s (3000 N) | |
| Control Signal | Increment/floating-point signal | 0~10VDCor4~20mA |
| Working Temperature | -10°C~50°C(50°F~120°F) | |
| Humidity | 10%~90%RH,no condensation | |
| Maximum Travel | 1000N 22mm;1500N 22mm;3000N 55mm;6500N 60mm;10000N 100mm | |
| Actuator Weight | 1000N 2.7Lbs/1.2kg; 1500N 3.3Lbs/1.5kg; 3000N 7.7Lbs/3.5kg | |
| Materials Of Main Parts | Fire-retardant ABS plastic shell and die-cast aluminum bracket | |
| Waterproof Rating | IP54 | |
| Valve Opening Before Delivery | Middle position | |
| Manual Function | Have manual operation | |
| Valve Opening Indication | Have valve open ingindication | |
| Insulation Resistance | Resistance between the power supply terminal and the shell:≥50MΩ; that between the input terminal and the shell:≥20MΩ. | |
| Dielectric Strength | Dielectric strength between the power supply terminal and the shell:500V,50 Hz for AC24V equipment; 1,500 V,50Hz for AC220 equipment; that between the input terminal and the shell:500 V,50 Hz |
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