PAPAILIAS, Inc. TY2SW/NW150 Spray Washers offer users a convenient way for the occasional or continuous automatic cleaning of the sight glass lens without the need to remove the lens from service. Our Washer units may also be combined with our Type 1 or Type 2 Window Wiper to facilitate clear, unobstructed viewing of a vessel's interiorType II Spray Washer: Available for weld pad style sight glasses series NW100, NW125, NW150, and NW200. All parts in contact with the process fluid are made of stainless steel. Specify as TY2 SW followed by the sight glass size.