EcoSpa Anthracite Angled Thermostatic Radiator Valve Pack Technical Specification: Thermostatic head and reversible bi-directional body Built in sensor with liquid element Graduated scale from 0 to 5 corresponding to temperature ranges 7 C - 32 C with frost protect Fully tested 10 bar Max pressure difference 0.8 bar Nominal flow rate 173 kgs/h Max flow temperature 120 C Can be mounted horizontally or vertically 1/2" BSP standard 15mm compression inlet.