22 mm Filling Valve CA Serv Valves PRV Comp.
Arrow Valves
£435
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Backflow Prevention Device primarily intended for filling and pressurising sealed house heating systems, or non-house systems, which have been risk assessed by the water supplier and downgraded to a Fluid Category 3 risk. A Type CA device – with suitable pressure regulation – can be permanently connected to a small heating system without the need for a removable filling loop. This enables the system to be filled and pressurised. A non-house primary circuit or heating system is classed as a Fluid Category 4 risk by default and a BA device can be used for filling and pressurising – see “Autofill
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