VF VFH Butterfly valves for air and gas VF and VFH butterfly valves are designed for regulation and control of air and gas flow. Valves can be operated manually using a lever (to setup the high-fire rate of the burner) or automatically using a servomotor (modulating or staged control) or a solenoid actuator (two-stage control). The setting can […]
VRA VLA VTA Solenoid valves for combustion air regulation The VRA/VLA/VTA types are normally closed solenoid valves for cold combustion air regulation. When the coil is not energized the spring works on the disc, keeping the adjusted minimum passage of air. When powering the coil the valve opens, moving the disc to the maximum open position. When power […]
SR SL ST Solenoid actuator for butterfly valves Solenoid actuators are designed to operate VF and VFH butterfly valves. When the coil is not energized the inner spring pushes down the plunger and, by means of a gear mating, shifts the connected valve to the minimum opening position. When the coil is powered the plunger moves up fast (SR) […]
MZ Servomotor for butterfly valves Servomotors MZ are designed to operate VF and VFH butterfly valves. They consist of a multi-stage spur gearbox with DC motor, driven by an electronic control unit. This allows a high torque and adjustable running time. MZ3 type is suitable for basic adjusting position, operated by cams connected to driving shaft. MZ5 […]
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