No Image Lot 6281 Rotary Valve - Large rotary valve in cast steel with inline drive and adjustable vane tips. The 6281Rotary Valve - Large rotary valve in cast steel with inline drive and adjustable vane tips. The Sanderson Weatherall Rotary Valve - Large rotary valve in cast steel with inline drive and adjustable vane tips. The rotor is believed to be 800mm diameter and the inl... Add to watchlist Catalogue Timed