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Datasheet generated 2026-10-07
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Danfoss TWA-V electrothermal actuator, 230 V AC, normally closed (088H3122)

Danfoss · HVAC & Refrigeration · Valve Actuators · Denmark · danfoss.com
Part Number
088H3122  ·  HS 8481.90
Danfoss TWA-V electrothermal actuator, 230 V AC, normally closed (088H3122)

Danfoss TWA-V electrothermal (thermal-wax) valve actuator, OEM order code 088H3122. The TWA-V converts a switching signal from a room thermostat or controller into valve movement on hydronic floor-heating manifolds and radiator/zone valves — no auxiliary air or hydraulics. Normally closed (NC) — the valve is closed when de-energised and opens when the actuator is powered. Supply voltage 230 V AC (50/60 Hz), power consumption 2 W. RAV / VMT connection; fits Danfoss RAV and VMT valve bodies. 0.95 m connecting cable. Enclosure rating IP41. Net weight 0.144 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 088H3122). OEM P/N 088H3122, EAN 5702420049526.

Technical Specifications

BrandDanfoss
Part number088H3122
TypeTWA-V
Product groupThermal actuators
DescriptionTWA-V NC 230V
Actuator principleElectrothermal (thermal wax element)
Valve functionNC
End-switchNo
Supply voltage230 V AC
Frequency range50 Hz – 60 Hz
Power consumption2 W
ConnectionRAV / VMT
Connection typeRAV
Cable length0.95 m
IP protection classIP41
REACH candidate-list substancesLead (CAS no. 7439-92-1)
Net weight0.144 Kilogram
Gross weight0.144 Kilogram
EAN5702420049526
HS code8481.90 (parts of taps, cocks, valves and similar appliances)

Properties

MaterialPolyamide housing
IP ratingIP41
MOQ1

Compatibility

Electrothermal actuator for Danfoss RAV and VMT valve bodies. Signalled by a 24 V or 230 V AC room-thermostat/controller output — match the supply voltage (230 V AC) and valve function (normally closed) to the control system. Confirm the valve connection (RAV / VMT) against the manifold or valve body before ordering.

Attached Documents