The Kleinn FIT34 complete fittings kit contains the 1/4" NPT fittings and control pieces used in HK3/HK3-1 and HK2/HK2-1 Problaster Horn Kits. Included parts list covers pressure switch, safety valve, drain cock, elbow compression fitting, momentary push button and thread sealant, delivering a ready set of components for service or assembly of those horn kits.
Kleinn HK3 Complete Set of Fittings