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Model 73 Built-In Pneumatic Valve Positioners

Brand: Siemens Aktiengesellschaft

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Model 73 Built-In Pneumatic Valve Positioners are compact pneumatic valve positioner instruments incorporates a single-axis, force-balance principle of operation to ensure accurate and stable control valve positioning.

In all cases, including bottom-loading applications, a Model 73 Built-In Pneumatic Valve Positioner is mounted directly on the topwork of the valve, with no external levers or other exposed mechanisms
Features
  • Single-axis, force-balance principle of operation, ensures accurate and stable positioning
  • Feedback circuits direct the actuator's position, ensuring adherence to the control instrument signal
  • Range spring capability accommodates a wide variety of valve strokes and instrument spans
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Model 73 Built-In Pneumatic Valve Positioners are compact pneumatic valve positioner instruments incorporates a single-axis, force-balance principle of operation to ensure accurate and stable control valve positioning.

In all cases, including bottom-loading applications, a Model 73 Built-In Pneumatic Valve Positioner is mounted directly on the topwork of the valve, with no external levers or other exposed mechanisms
Features
  • Single-axis, force-balance principle of operation, ensures accurate and stable positioning
  • Feedback circuits direct the actuator's position, ensuring adherence to the control instrument signal
  • Range spring capability accommodates a wide variety of valve strokes and instrument spans

Specifications

Input Range

  • 3-15 psig
  • 3-9 psig
  • 9-15 psig
  • 6-30 psig
  • 3-27 psig

Valve Travel

  • 1/4" minimum
  • 48" maximum

Supply Pressure

  • 150 psig at any connection

Air Consumption

  • 73N_F: 0.25 sfcm
  • 73N_B: 0.6 scfm

Overrange Limit

  • 150 psig to any coonnection

Response Level

  • 73N_F: 0.1 % of input span
  • 73N_B: 0.25 % of input span

Materials of Construction

  • Aluminum
  • Brass
  • Stainless Steel
  • Neoprene
  • Buna-N