Normally Closed thermoelectric actuator.
Suitable for a large range of underfloor heating manifolds including:
John Guest Speedfit
Polyplumb
Emmeti Topway
Nu-Heat
Uponor TM, FM, FR, MF & RA
Can also be used on many TRV bodies, for example Honeywell
Replaces many existing actuators, including:
John Guest Speedfit JGUFHA240V (2-Wire)
Polyplumb PB00401 (2-Wire)
Polyplumb PB00402, M100-BGEP (4-Wire)
Osma 52UH802, 52UH002 (2-Wire)
Uponor 582015 (2-Wire)
Uponor 1013006 (2-Wire)
Watts Telestat 10C:
    10C230NC2 (2-Wire)
    10C230NC4 (4-Wire)
    10C220NC2 (2-Wire)
    10C220NC4 (4-Wire)
Watts Telestat 20C:
    20C220V (2-Wire)
Watts Telestat 20CI:
    20CI-220V (2-Wire)
Watts 22C
    22C230NC2 (2-Wire)
    22C230NC2-5 (2-Wire)
    22C230NC4 (4-Wire)
Honeywell
    M100-BG (2-Wire)
    M100-BG-K (2-Wire)
    M100-BGE (4-Wire) (WF versions require this actuator instead)
    Z100-BG (2-Wire)
    Z100-BGE (4-Wire) (WF or IH versions require this actuator instead)
    M8001V230 (2-Wire)
MNG
    209013 (2-Wire)
Nu-Heat
    OMDA-C (2-Wire)
    IZV22H4-C (4-Wire)
Caleffi
    656102 (2-Wire)
    656112 (4-Wire)
Taconova
    Novadrive 257.2855.000 (2-Wire)
    Novadrive 257.2862.000 (2-Wire)
    Novadrive 257.2255.500 (4-Wire)
Danfoss
    TWA-K 088H3142 (2-Wire)
Heimeier
    1807-00.500 (2-Wire)
Behr Thermaqua / Antares / RBM
    X7 565 02 1A (2-Wire)
    X7 590 30 1A (2-Wire)
    X7 590 18 10 (2-Wire)
    X7 590 02 1W (2-Wire)
    X7 592 90 10 (4-Wire)
    X7 590 10 1A (2-Wire)
    X7 590 64 1A (2-Wire)
    X7 592 18 10 (4-Wire)
    X7 592 02 1W (4-Wire)
    X7 592 13 10 (4-Wire)
    X7 550 10 10 (2-Wire)
    X7 550 47 (2-Wire)
ICMA
    82980NC53 (2-Wire)
    82979NC53 (4-Wire)
Roth
    1135000281 (2-Wire)
Kampmann
    146905 (2-Wire)
Unbranded
    SEH30.23 (2-Wire)
And many more.
Please e-mail us if your model isnt listed. We can obtain replacements for nearly all types of underfloor thermal actuator
These are high quality electrothermic actuators. Beware of cheap, unreliable, brands being offered elsewhere.