Actuation Valve can provide up to SIL 3 rating for all sanitary hygienic ball valves. This includes BS4825 Tri Clamp & Weld OD.
The tests results concluded that the valves are suitable for use in a safety instrumented system up to SIL 2 in low demand mode. Under consideration of the minimum hardware fault tolerance HFT=1 the devices may be used in a redundant structure up to SIL 3. The instructions of the associated installation, operation & safety manual have to be considered.
Following this news , the company can offer a SIL rated pneumatic valve actuation package for all sanitary hygienic ball valves, both spring return & double acting.