P/P Positioners  

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Model 9540 R P/P Positioner

Models 9540R Electro-Pneumatic Positioner for rotary valves is a single acting, compact, force-balance 90 degree rotary positioner. This positioner is utilized to characterize the relationship between valve stem rotational position and the system's control signal, and to precisely position the valve stem. An internal 2-gauge cluster indicating input signal and output loading pressures is standard with this positioner.

Specifications
Features
Adjustable gain.
Built-in bypass.
Adjustable stroking speed.
Direct or reverse action with simple field reversiblity.
Easy change to split range operation.
Two pressure gauges standard.
High capacity relay.
Negligible effect from vibration.
Totally enclosed linkage.
Multiple characterization cams.
Integral travel indicator.

 

Model 9540 l P/P Positioner

Models 9540l Pneumatic Positioner for rotary valves is a single acting, compact, force-balance positioner. This positioner is utilized to linearize the relationship between valve stem position position and the system's control signal, and to precisely position the valve stem. An internal 2-gauge cluster indicating input signal and output loading pressures is standard with this positioner.

Specifications
Features
Adjustable gain.
Built-in bypass.
Adjustable stroking speed.
Direct or reverse action with simple field reversiblity.
Easy change to split range operation.
Two pressure gauges standard.
High capacity relay.
Negligible effect from vibration.
Corrosion resistant SST hardware.

 

Model 5100P

The Models 5100P is a compact instrument air regulator with a built in filter and dripwell. Regulates 0-30 or 0-60 psig air pressure for positioners, controllers, solenoids, etc. Standard unit supplied with mounting nut for through-panel installation.

Features
Self cleaning 40 micron filter.
No brass parts.
No asbestos.
Built-in relief valve.
Two pressure gauge connections.

 

Model 900R

Models 9000R Pneumatic Positioner for rotary valves is a single acting, force-balance pneumatic positioner that is used to provide valve stem motion feedback and to characterize a rotary control valve's motion vs. input signal. Characterization of the valve is accomplished by attachment of a formed cam to a rotary control valve's stem. As the Valve's stem rotates, the positioner's range spring causes output loading air pressure to be either passed to the actuator vessel, or be vented into the enclosed arm housing's internals. This unique venting location purges air routinely, and minimizes corrosive effects due to moisture and dilute hostile chemicals found in the ambient air.

Features
Compact built-in design.
Provides purge for actuator-to-valve linkage.
High capacity.
Designed for Cashco products.
Low Cost
Ease of in-field installation.
Provides multiple cam characterization.
Satisfactory service with lower quality supply air.
Negligible effect from vibration.

 

   Electro-Pneumatic Positioners
Model 9520L I/P Positioner

Models 9520L Electro-Pneumatic Positioner for rotary valves is a single acting, compact, force-balance linear positioner with an intergral I/P transducer. Unit recieves a 4-20 mA analog input and outputs a pneumatic loading pressure. The positioner linearizes the relationship between valve stem position and the system's control signal, and precisely positions the valve stem. The external 2-gauge cluster indicates air supply and output loading pressures.

Specifications
Features
Intrinsically safe.
Adjustable gain.
Adjustable stroking speed.
Direct or reverse action with simple field reversiblity.
Easy change to split range operation.
Corrosion resistant SST hardware.
Two pressure gauges standard.
High capacity relay.
Negligible effect from vibration.

 

Model 9520 R I/P Positioner

Models 9520R Electro-Pneumatic Positioner for rotary valves is a single acting, compact, force-balance rotary positioner with an intergral I/P mA analog input and outputs a pneumatic loading pressure. The positioner characterizes the relationship between valve stem rotational position and the system's control signal, and precisely positions the valve stem. The external 2-gauge cluster indicates air supply and output loading pressures.

Specifications
Features
Intrinsically safe.
Adjustable gain.
Adjustable stroking speed.
Direct or reverse action with simple field reversiblity.
Easy change to split range operation.
Corrosion resistant SST hardware.
Two pressure gauges standard.
High capacity relay.
Negligible effect from vibration.
Totally enclosed linkage.
Multiple characterization cams.
Integral travel indicator.