» Fisher™ · Instrumentation
Valve Positioners
The instrument that puts the valve exactly where the controller asks — across three generations: pneumatic, analog I/P and FIELDVUE™ digital valve controllers.
- Positions the valve to the signal
- Pneumatic · Analog I/P · Digital
- FIELDVUE™ diagnostics & HART
- Genuine OEM parts
What it is
The brain between signal and valve
A valve positioner is the instrument that makes the actuator put the valve exactly where the controller asks. It continuously compares the control signal to the actual stem or shaft position and adjusts actuator pressure until the two match — delivering precise, repeatable throttling that the actuator alone cannot.
The technology has evolved from purely pneumatic, to analog I/P (electronic signal converted to air), to today's microprocessor-based FIELDVUE™ digital valve controllers — which add continuous diagnostics and two-way communication on top of accurate control.
How a valve positioner works
Three generations of control
Pneumatic
A pneumatic input signal modulates supply pressure to the actuator through a nozzle/flapper, positioning the stem or shaft in proportion to the signal. The simplest, air-only design.
Analog I/P
Most modern loops use a 4–20 mA DC signal. An I/P (current-to-pneumatic) converter turns the electronic current into a proportional pneumatic output that feeds the pneumatic positioner.
Digital Valve Controllers
Microprocessor-based FIELDVUE™ instruments accept 4–20 mA / HART / fieldbus, position the valve, and add continuous diagnostics and two-way communication for setup, tuning and predictive maintenance.
The line
Fisher™ positioners we supply
Grouped by type — pneumatic, electro-pneumatic (analog I/P) and FIELDVUE™ digital. Open each bulletin, or tell us the valve and signal and we'll confirm the right one.
Valve positioners
Pneumatic (P) & electro-pneumatic (I/P) Fisher™ 3582
PThe workhorse pneumatic positioner for sliding-stem and rotary valves.
Fisher™ 3582i
I/PThe 3582 with an integral I/P converter — accepts a 4–20 mA signal.
Fisher™ 3610J
PSingle-acting rotary pneumatic positioner — accurate, fast-response throttling.
Fisher™ 3610JP
PPneumatic positioner for double-acting rotary actuators.
Fisher™ 3611JP
PPneumatic positioner for double-acting rotary actuators — accurate, fast response.
Fisher™ 3620J
I/PElectro-pneumatic version of the 3610J — single-acting rotary, 4–20 mA input.
Fisher™ 3620JP
I/PElectro-pneumatic positioner for double-acting rotary actuators, 4–20 mA input.
Fisher™ 3621JP
I/PElectro-pneumatic positioner for double-acting rotary actuators, 4–20 mA input.
Fisher™ 3660
PPneumatic positioner for sliding-stem valves — position proportional to a pneumatic signal.
Fisher™ 3661
I/PElectro-pneumatic positioner — accurate, fast-responding 4–20 mA positioning for sliding-stem valves.
Fisher™ 3710
PPneumatic positioner for diaphragm or piston rotary actuators.
Fisher™ 3720
I/PElectro-pneumatic version of the 3710 — rotary actuators, 4–20 mA input.
FIELDVUE™ digital valve controllers
HART / fieldbus + diagnostics
FIELDVUE™ DVC6200
The flagship FIELDVUE™ — HART / fieldbus, continuous valve diagnostics and two-way communication for tighter control and predictive maintenance.
FIELDVUE™ DVC2000
Cost-effective digital valve controller bringing diagnostics and accurate control to general-service valves.
FIELDVUE™ DVC7K
The latest FIELDVUE™ — real-time performance analysis and health monitoring with flexible connectivity and an intuitive interface.
Genuine OEM
Genuine Fisher™ positioner spare parts
A positioner only protects control if it's repaired with the right genuine parts. We supply OEM relays, I/P converter modules, gauges, gasket and seal kits, feedback parts and FIELDVUE™ electronic modules so a positioner is restored — and its diagnostics trusted — to the original design.
Tell us the valve, the input signal and the protocol — our team will confirm the right Fisher™ positioner or FIELDVUE™ controller, or genuine parts.
Resources & tools
Spec it, look it up
Each model above links to its Fisher™ bulletin. Here's the rest of what you need to select and support a positioner.
Technical library
Handbooks & application guides
The Fisher™ reference material behind every positioner and instrument selection.
Browse the library →Bulletin
Fisher™ 3610J / 3620J Positioners (PDF)
Pneumatic positioners for sliding-stem and rotary valves.
Download PDF →Free tool
Fisher™ Obsolete & Inactive Lookup
Running a discontinued Fisher™ positioner or controller? Find its recommended replacement.
Look it up →Downloads
Datasheets & bulletins
Positioner and instrument literature across the Fisher™ line.
Browse downloads →Need a Fisher™ positioner or parts?
Tell us the valve and the signal — genuine OEM, shipped from our Orlando, FL warehouse.