6
Metal diaphragm tanks
7
Fluid pumps and fluid circulating pumps and parts therefor; fluid pressure boosters; air compressors; automatic control, safety and regulating valves for fluid pumps and fluid circulating pumps; calibrated fluid flow guides for use in fluid flow systems
9
Fire pumps; and fire pump systems, comprising: horizontal end suction, horizontal split-case or vertical in-line pumps, electric or diesel drives, application-specific batteries and controllers; computer utility software for use in selecting and sizing pump systems, fire pump systems, heat exchanging and circuit balancing valves; meters for the following: fluid pumps, fluid circulating pumps, air compressors, fluid pressure boosters and water heaters
11
Pressure-indicating thermostatic radiator valves, balancing valves for the following: fluid pumps, fluid circulating pumps, air compressors, fluid pressure boosters and water heaters; heat exchangers; vortex air separators and purgers for removal of entrained air from heating and cooling systems; and heat transfer systems comprising: pumps, heat exchangers, air separators, expansion tanks, air control valves and electric controls sold as a unit to provide heating or cooling of water circulation systems for commercial buildings, ice making or industrial process systems