Fisher 3560 Valve Positioner Manual Pdf May 2026

The Fisher 3560 (often cited alongside similar legacy models like the 3582 or 3570) is a single-acting pneumatic positioner. It is typically used with diaphragm-actuated, sliding-stem control valve assemblies to modulate supply pressure and maintain a specific valve plug position. Key Technical Specifications

The unit requires clean, dry, non-corrosive air or natural gas. Fisher 3560 Valve Positioner Manual Pdf

Verify the 25%, 50%, and 75% travel points against the corresponding input signals (e.g., 6, 9, and 12 psig for a 3–15 psig range). Maintenance and Troubleshooting Common maintenance tasks involve: The Fisher 3560 (often cited alongside similar legacy

During installation, it is vital to correctly set the based on the actuator travel. For travels between 20 and 30 mm, the long portion of the plate's slot should be closest to the positioner. Calibration Steps for the 3560 Verify the 25%, 50%, and 75% travel points

Calibration ensures the valve responds accurately to control signals. General steps (similar to the Fisher 3582) include:

Increase the input signal to the maximum (e.g., 15 psig). Adjust the flapper assembly or span adjustment screw until the valve reaches the full intended travel.