Fisher 3720 Electro-Pneumatic Rotary Valve Positioner
The Fisher 3720 Electro-Pneumatic Valve Positioner is an industrial control instrument designed for accurate positioning of rotary pneumatic valve actuators.
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- Fast dispatchAustralia & worldwide
- Technical supportTalk to an engineer
- 1 YearWarranty
Product Overview
The Fisher 3720 Electro-Pneumatic Valve Positioner is an industrial control instrument designed for accurate positioning of rotary pneumatic valve actuators. Manufactured by Fisher, an Emerson brand, the 3720 combines a Fisher 3710 mechanical pneumatic positioner with a 3722 electrical-to-pneumatic converter. It converts a 4-20 mA DC electrical input into a proportional pneumatic control signal, supporting reliable valve movement and process regulation.
The Fisher 3720 features spool valve technology, adjustable calibration, and a durable industrial housing. It supports single-acting and double-acting configurations for compatible diaphragm and piston rotary actuators. Its responsive pneumatic control makes it suitable for water treatment, oil and gas processing, chemical manufacturing, power generation, and industrial valve automation.
Technical Specifications
|
Specification |
Value |
|---|---|
|
Product Name |
Electro-Pneumatic Rotary Valve Positioner |
|
Manufacturer / Brand |
Fisher / Emerson |
|
Model Number |
3720 |
|
Product Series |
Fisher 3700 |
|
Product Type |
Mechanical Electro-Pneumatic Valve Positioner |
|
Positioner Assembly |
Fisher 3710 with 3722 I/P Converter |
|
Control Technology |
Mechanical Force Balance |
|
Electrical Input Signal |
4-20 mA DC |
|
Split Range Input |
4-12 mA or 12-20 mA |
|
Converter Output |
0.2 to 1.0 bar (3 to 15 psi) |
|
Pneumatic Output |
Up to Full Supply Pressure |
|
Actuator Configuration |
Single Acting or Double Acting |
|
Valve Compatibility |
Rotary Control Valves |
|
Actuator Compatibility |
Pneumatic Diaphragm and Piston Actuators |
|
Pneumatic Control Mechanism |
Spool Valve |
|
Electrical Connection |
1/2 NPT or M20, Configuration Dependent |
|
Position Adjustment |
Adjustable Zero and Span |
|
Operating Medium |
Clean, Dry Instrument Air |
|
Mounting Configuration |
Rotary Actuator Mounted |
|
Operating Application |
Industrial Pneumatic Valve Positioning |
|
Condition |
New |
|
Warranty |
1 Year |
Key Features
Accurate 4-20 mA electro-pneumatic valve positioning
Integrated Fisher 3722 electrical-to-pneumatic converter
Mechanical force-balance positioning technology
Single-acting and double-acting actuator compatibility
High-response pneumatic spool valve control
Adjustable zero and span calibration
Durable construction for industrial environments
Compatible with diaphragm and piston rotary actuators
Typical Applications
Industrial rotary control valve positioning
Water and wastewater treatment facilities
Oil and gas processing plants
Chemical and petrochemical manufacturing
Power generation and utility systems
Pneumatic diaphragm actuator control
Industrial flow and pressure regulation
Valve automation and maintenance
Shipping & Support
Fast dispatch, Australia and Worldwide Shipping
Technical assistance available
1-year warranty
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