The RAVI offers a simple non-electric alternative to the more traditional motorised valve and electric cylinder thermostat, and is available in 2-port versions for pumped and gravity systems, and in a 3-port version for pumped systems.
Simple, self acting control, requires no wiring
External thread connection
For pumped primaries
Technical specification
Waist Sizeaa29ce94gwTypeCylinder Valve & ThermostatSize15 mmNumber of Ports3Diameter15 mmSupplier Part Number013U808700Brand NameDanfoss