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TWA Thermal Wax Actuator
Brand: Danfoss
The TWA is a small actuator for electrical on/off controls to activate several types of valves and floor heating manifolds.
The TWA range covers actuators for 24 V (SELV) or 230 V supply in both normally closed (NC) or normally open (NO) versions (valve positions with no supply voltage to the actuator). NC/S versions with end switch are also available for some actuator types.
The actuator is equipped with a visual position indicator to show the open or closed position of the valve.
The TWA can be connected to the RA, RTD, RAVL and RAV-valves from Danfoss. Furthermore versions for valves with Heimeier/MNG/Oventrop M30 × 1.5 connection are available.
Other valves must be verified individually to ensure correct valve closing measurement and valve top geometry.
Specifications
Brand
Ambient Temperature Range
- 0° to 60° C (32° to 140° F)
BSP Connection
- G 1” A Male
- G 1-1/4” A Male
- G 3/4” A Male
- 1” BSPT Male
- 1/2” BSPT Male
- 3/4” BSPT Male
- 3/8” BSPT Male
- 1” BSPP Female
- 1/2” BSPP Female
- 3/4” BSPP Female
- 3/8” BSPP Female
Cable Length
- 47.2” (120 cm)
Consumption
- Running Power Consumption: 2 W
Current
- Maximum
Differential Pressure
- Maximum
Electrical Contacts
- Normally Closed
- Normally Open
Environmental Protection
- IP41
Flow Rate
- 0.65 to 4.75 m³/hour
Frequency
- 50/60 Hz
Metric Connection
- M30 x 1.5
Supply Voltage
- 230 V (3 A Pre-fuse)
- 24 V (Class II (SELV))
Switch Type
- Normally Closed & Normally Open
