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Model 73 Built-In Pneumatic Valve Positioners
Brand: Siemens AGModel 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
Brand
Input Range
- 3-15 psig
- 3-9 psig
- 9-15 psig
- 6-30 psig
- 3-27 psig
Valve Travel
- 1/4" min.
- 48" max.
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 connection
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
