TWA actuators electrically activate valves on hot water heating systems, where slow opening and closing is desirable to eliminate water hammer associated with quick acting valves.
The 24VAC, 2.0 VA actuators are available in a normally closed or normally open position, and with or without a valve position indicator.
TWA-A Actuator24VAC 2.0 VA c/w valve position indicator.
NC=Normally Closed, NO=Normally Open.
TWA-V Actuator24VAC 2.0 VA
NC=Normally Closed, NO=Normally Open
Electronic zone valve packs are electrically activated valve controls that include both the actuator and valve body in one convenient package.
Robustly built and designed to meet the rigors of the residential, commercial and industrial sectors, a comprehensive range of Danfoss RA2000 thermostatic radiator valves is available for hot water, one-pipe steam, and two-pipe low pressure steam systems.
The VMT valve is a 2-way seated valve, used primarily for heating systems. The valve can be combined with the following thermostatic elements from Danfoss: RAVK, ABV, TWA-V or RA2000 wall mount operators.
Find information on hydronic heating troubleshooting, including our top frequently asked questions, our video library, links to hydronic heating literature, a link to our newsletter, and more.
Go to Technical Support page