Ball Valves ISO 228 Female A fast, reliable, and leak-proof solution for compressed air with all materials including a 10-year guarantee. Ball Valve ISO 228 D20 to 3/4″ Female £58.25 Ex. VAT Add to basket Ball Valve ISO 228 D25 to 1″ Female £71.17 Ex. VAT Add to basket Ball Valve ISO 228 D40 to 1 1/2″ Female £156.57 Ex. VAT Add to basket