Materials

Body & Bonnet: Ductile iron, GGG50, to DIN 1693 (Grade 500 / 7, to BS 2789) OR Grey cast iron, GG25, to DIN 1691 (Grade 220 / 250, to BS 1452)

Wedge: Ductile iron, GGG50, core fully vulcanised with non-toxic EPDM rubber, with integral wedge nut of dezincification resistant brass, CZ132 to BS 2874

Spindle: Brass/ Stainless steel, X20Cr13

Locking ring: Dezincification resistant brass, CZ132 to BS 2874

Bonnet bolts: Carbon steel / Stainless steel A2

Gasket: EPDM / NBR

Coating: Fusion bonded Epoxy / Rilsan11 corrosion resistant coating.