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  • Selecting Valves for Variable Flow Hydronic Systems (.pdf)
    Valves, such as common globe, butterfly, and ball valves, that performed satisfactorily for constant flow or variable flow primary-secondary systems generally are not satisfactory for primary-only variable flow systems because of the great variations in differential pressures across modulating
  • Optimux Control Valves for Aerospace Testing Systems
    of flow, temperature, and pressure control solutions for aerospace applications that include the OpTE - a robust triple offset butterfly valve that ensures bubble-tight shutoff at any temperature - and the OpGL-XT - a rugged, multi-purpose, custom-engineered globe control valve for applications
  • Bring on the Butterfly (.pdf)
    Zone valves. Ball valves. Globe valves. Butterfly valves. These are the control valves used in HVAC today. Whereas zone, ball, and globe valves are used in small valve applications, butterfly valves are often used when water applications call for valves larger than 2' (3.1 cm) or when the flow
  • Interphex Preview, Part Deux
    in pressure, flow and temperature control. New products include the Digihelic Differential Pressure Controller, process pressure gages, Teflon and rotatable scale flowmeters, air velocity transmitters, thermocouple temperature switches, needle and ball valves, and much more. DeltaV System, building

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