The Nu-Heat OMDA-C Thermal Actuator is a new, sealed product designed for hot water underfloor heating systems. Specifically made for use with boilers, this 230V valve head features an M30 x 1.5 connection size. The Nuheat brand ensures quality and reliability for efficiently heating up your home. Ideal for DIY projects or professional installation, this thermal actuator is a crucial component in maintaining a comfortable and warm environment.