Calibration ensures the valve stem position perfectly matches the input signal (e.g., 4 mA = 0% open, 20 mA = 100% open). Emerson.com

For rotary valves (e.g., Fisher Vee-Ball), you must use a rotary cam and adjust the feedback arm length according to the specific angle of rotation (typically 90°).

) are electro-pneumatic valve positioners designed to provide accurate positioning for pneumatic actuators. These units convert a DC input signal (typically 4-20 mA) into a proportional pneumatic output pressure to move the valve plug. 🛠️ Specifications

: Output pressure required to produce valve plug travel from 7/16 to 4 1/8 inches.

Qualified personnel only should perform installation and maintenance: