MK3 Motorized 3-Way Ball Valve – Spring Return
QUEEN MOTOR VALVE
Description
The MK3 electric valve is equipped with a spring-return, angular-turn electric actuator, a highly reliable mechanical energy actuator.
When power is normally supplied, the motor actuator starts and simultaneously stores energy in the spring. In the event of a power outage, the spring immediately releases energy, automatically returning the actuator to the preset safe position (fully open or fully closed), ensuring safe system operation.
The three-way electric ball valve is available in both L-type and T-type configurations, offering flexible flow switching, mixing, or distribution control. It is widely used in automation control, fluid transportation, and industrial systems.
• Two power supply connections. (Same wiring diagram as solenoid valves)
• The MK3 actuator is suitable for assembly with 2-way or 3-way ball valves.
• The MK3 actuator can be configured for emergency closing (power on, open) or emergency opening (power off, close).
• The MK3 is suitable for pressures ranging from 0 to 10 kgf/cm².
• The actuation time from the closed position to the open position is 2.5 seconds.
• The MK3 can be manually operated in the event of a power outage or power failure.
• Features a waterproof and dustproof aluminum alloy housing.
• Can be mounted vertically or with an angle of ±15°.
Specifications
Model
(1) MK3-3W-15P
(2) MK3-3W-20P
(3) MK3-3W-25P
(4) MK3-3W-32P
(5) MK3-3W-40P
(6) MK3-3W-50P
Rated voltage
AC 100,110 V 50/60Hz
AC 200,220 V 50/60Hz
Power
consumption
80VA(Motor)
8VA(Solenoid)
Fluid
Air, oil, water
Fluid temp.
-5~120°C (None freezing)
Ambient temp.
0~50°C
Max. pressure
Max. 10 kgf/cm²
Connection size
(1) 1/2"
(2) 3/4"
(3) 1"
(4) 1-1/4"
(5) 1-1/2"
(6) 2"
Connection
Threaded
Valve material
SUS 304
SUS 316
Valve types
3-way L type ball valve
3-way T type ball valve
Time for 90°
2.5 sec (90 deg)
Insulation
IP65
Three-way valve flow direction diagram
MK3 electric valve with spring return actuator ensures fail-safe position during power loss. L/T type 3-way ball valves allow flexible flow control in automation, HVAC, and water systems.