Specification: in accordance to BS 9251:2021 and EN 16925:2018. Delivered with approved flow switches acc. to EN 12259-5 LPCB and glycerine filled stainless steel pressure gauge. Viking only uses flow switches specifically tested and approved for sprinkler system use. The flow switch is CE-marked (EN12259-5), LPCB, UKCA and WRAS approved. Flow switch standard installed on left hand side, dual ports allow user to change sides if needed. Lockable inlet ball valve 50% less leak paths due to one piece forging