What information is needed to select a control valve?

Topics

Basic required application information

  1. Full flow GPM (or steam lbs/hr capacity)
    1. With pressure independent (PI) valves, only the full flow GPM is required to select the body size for series: ePIV, PICCV, PIQCV, or Energy Valve
  2. Design pressure drop to achieve full flow (N/A for PI Valves between 5-50 psid)
  3. Valve porting, 2-Way or 3-Way (if 3-way is it mixing or diverting)
  4. Valve type: CCV, Globe, PI, Butterfly, Rotary, ZoneTight
  5. Control Signal: On/Off, Floating, Proportional, or other
    1. If On/Off, what is the voltage (24V,110V, 230V or other)
    2. If Proportional what is the control signal input (2-10V, 0-10v , or other)
  6. Fail-safe on power loss, if yes specify the fail position
  7. Any other items: end switches, feedback, conduit connections, etc.
  8. Outdoor weather covers, or NEMA 4 enclosure

Other application constraints

  1. Media temperature
  2. System pressure (steam valves REQUIRE valve inlet pressure and required heat exchanger inlet pressure)
  3. Desired close-off pressure (if not provided we will quote max available)
  4. Pipe size (may be required depending on specific application)
  5. Media content other than water and glycol

SelectPro

SelectPro is Belimo's software tool for sizing and selecting control valves and damper actuators.  It is also useful for determining valve and damper retrofits and configuring piping packages. 

To use the online version of SelectPro or download it to your computer click here