ARMSTRONG DARLING

machine parts, namely fluid pumps and fluid circulating pumps and parts therefor; fluid pressure boosters; air compressors; fire pumps; and fire pump systems, comprising horizontal end suction, horizontal split-case or vertical in-line pumps, electric or diesel drives, and application specific batteries, controllers

automatic control, safety and regulating valves for fluid pumps and fluid circulating pumps; pressure-indicating thermostatic radiator valves, balancing valves and meters for the following - fluid pumps, fluid circulating pumps, air compressors, fluid pressure boosters and water heaters; calibrated fluid flow guides, all for use in fluid flow systems; computer utility software for use in selecting and sizing pump systems, fire pump systems, heating exchanging and circuit balancing valves

heat exchangers; vortex air separators and purgers for removal of entrained air from heating and cooling systems; and heat transfer packaged systems to provide heating or cooling of water circulation systems for commercial buildings, ice making or industrial process systems, the package systems comprising - pumps, heat exchangers, air separators, expansion tanks, air control valves and electric controls