Thermal Actuator, Four-Wire

The VA33 spacer ring A3019900 is required for adapting A3023522 to older style Wirsbo Brass Manifolds. The Uponor Thermal Actuator is a slow-opening thermal actuator that provides individual loop flow control on a multi-zoned manifold and features an end switch for activation of relay (pump), heat plant or other auxiliary devices.Uponor's new Thermal Actuator, four-wire features a new design with lower power consumption (1 watt) and includes three adapter rings for compatibility with all of Uponor's radiant manifolds, including: Engineered Polymer (EP) Heating Manifold Stainless-steel Manifold TruFLOW Jr. Manifold TruFLOW Classic Manifold