For individual room control of floor and wall heating circuits and for hydraulic balancing of individual heat consumers. 

The RTB valve is a thermostatic return temperature limiter with adjustable maximum temperature and fixed minimum flow in the range of 0.5% of nominal flow. The flow rate is adapted to the actual output and the heating circuit is automatically hydraulically balanced, eliminating the need for manual adjustment. In addition, the heating time after the night setback is shortened. In addition, the RTB valve can be used as an individual room control with an adapted heating curve by setting the return flow temperature close to the room temperature. Furthermore, significantly less pump energy is consumed due to lower volume flows. As a practical application of such valves, we recommend mounting them directly on the return collector of commercially available underfloor heating circuit manifolds.

DN15, DpN 100mbar, V'maxN 0.57m³/h, Kvs 1.8
Inlet nipple G¾(a) for conical screw connection (Eurocone), e.g. KRV 18mm
Outlet fitting with union nut G¾(i) for Eurocone
PN 10bar, Tmax 90°C
length: 72mm, height incl. thermostatic head: 67mm, width thermostatic head: 41mm