Product Overview

The Fisher 3720 is an electro-pneumatic valve positioner built for diaphragm and piston rotary actuators. It combines the 3710 pneumatic positioner with the 3722 electro-pneumatic converter, converting a 4-20 mA control signal into an accurate valve ball or disc position on quarter-turn valves.

Key Features

• 4-20 mA DC input signal, split range 4-12 or 12-20 mA optional

• Single or double acting, direct and reverse action field reversible

• Maximum outlet pressure 150 psi (10.3 bar)

• Proven spool valve design for fast response and long cycle life

• Explosion-proof and intrinsically safe certifications available

Typical Applications

Commonly installed on Fisher ball valves, butterfly valves and rotary control valves in natural gas, petrochemical, power and general process plants where precise modulating control of quarter-turn valves is required.

Selection Guide

Confirm actuator model and whether single- or double-acting configuration is required. A limited quantity of 3720 positioners is available from stock for immediate shipment.