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ITT Conoflow GC-31 Positioner

The Commandaire® Positioner is a top mounted, integral positioner used with piston or spring and diaphragm actuators. Utilizing a force balance principle this unit provides proportional positioning of an actuator with stroke lengths up to 10”. The completely enclosed design eliminates exposed levers or linkages making the Commandaire® Positioner rugged and reliable.

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Samson 3730 Positioner

Samson’s 3730 Electropneumatic Positioner can be used to position a valve with 0.14”- 7.8” linear travel or 24-100 degree rotary applications.  Five versions are available to provide 4-20 mA, HART, PROFIBUS-PA and FOUNDATION Fieldbus communication protocol.  This versatile unit also can operate with an external position sensor to physically remove the positioner from the standard valve stem location.

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Samson 3731 Positioner

Samson’s 3731 Electropneumatic Positioner provides the features of the standard HART and FOUNDATION Fieldbus 3730 unit in an Explosion-proof version. It has both single acting and double acting capabilities for attachment to pneumatic control valves.

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Samson EXPERT and EXPERT+ Positioners

EXPERT and EXPERT+ are enhanced firmwares designed for predictive, status-oriented maintenance on control valves with pneumatic actuators. All diagnostic functions are completely integrated into the postioner. EXPERT and EXPERT+ enable operators to conveniently view and edit data in the TROVIS-VIEW and FDT/DTM engineering tools, which makes operation easy to learn.

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Samson 3767 Positioner

Samson’s 3767 Electropneumatic Positioner can be used to position a valve with 0.3”- 4.7” linear travel or 90-degree rotary applications.  It is offered in both 3-15 PSIG and 4-20 mA versions.   It has both single acting and double acting capabilities for attachment to pneumatic control valves.

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Samson 4763 Positioner

Samson’s 4763 is a general-purpose single acting positioner for attachment to pneumatic control valves.  The positioner can have 4-20 mA, 1-5 mA, or 3-15 PSIG input and can control from 0.3” to 3.5” of linear stem travel.  The unit is suitable for normal or split-range applications.

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Worcester AF17 Positioner

The Worcester AF17 Positioner is a unique circuit board specifically designed for quarter-turn operation with 100% solid-state circuitry, an anti-hunting control, and is direct or reverse-acting. The AF17 features dynamic electronic braking with electromechanical braking as an option and an LED calibration check.

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Worcester DataFlo Positioners

The Worcester DataFlo P Positioner, controlled by a 4-20 mA analog signal from a PLC or digitally from a computer, gives you calibration, monitoring and diagnostics both onsite or from a control room computer. The Worcester DataFlo C combination based PID single-loop controller and final control element brings control to the point of use.

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Worcester PULSAIR III Positioner

The Worcester PULSAIR III is a digital positioner designed for controlling modulation valves. The positioner can be used with single- or double-action actuators for either rotary or linear movement. The PULSAIR III can be equipped with modules for feedback, limit switches, and a pressure gauge block. The modules for feedback and limit switches can contain 4-20 mA feedback and mechanical switches, reed switches, or inductive sensors.