RAS-D2 + Bidir

All RAS-D2 Combi Packs comprise of a RA-FS bi-directional valve and a RAS-D2 sensor designed for 2-pipe heating systems. Combi Packs are also available with a RLV-D lockshield valve. For further data on the lockshield valve please see separate RLV-D data sheet. The valves have a ½” BSP (R½”) tail piece connection to the radiator and include 8mm, 10mm and 15mm compression fittings to connect the valve to the pipe work. The valve bodies are reversible and bi-directional and include a flow-selectable feature to ensure trouble free installation without any risk of water hammer. The valve is supplied with a protective cap, which can be used for manual regulation during the construction phase. The cap must not be used as a manual shut off device