SLV5-ARO: Air Operated Internal Valve with Bonded Viton A seal.
SLV5-AROZ: SLV5:ARO comes with Neo Cork Gaskets (tank and pipe flange).
SLV5-AROVZ: SLV5:ARO comes with Viton A Gaskets (tank [3mm] and pipe [3mm] flange).
SLV5-AROTVZ:SLV5:ARO comes with 1.6mm Viton A Gaskets (tank [1.6mm] and pipe [3mm] flange).
SLV5-AROAVI: Air Operated Internal Valve with Bonded Viton A seal - Aviation Specification.
SLV5-AROAVIZ: SLV5-AROAVI comes with NBR Corke Gaskets (tank and pipe flange).