Kammer control valves, Fig. 4: i/p positioner – Flowserve 4 Series Kämmer Pneumatic and Electropneumatic Actuators User Manual

Page 7

Flow Control Division

Kammer Control Valves

Positioner spring

Pilot valve

Supply to
actuator diaphragm

Vent

Pilot plug

Double diaphragm

Balancing plate

Seat ring

Supply input
1.4 – 4.2 bar
(20 – 60 psi)

Signal

0/4 – 20 mA

Range adjustment screw

(max. 3 turns)

Signal input

0.2–1.0 bar (3–15 psi)

Vent

Pilot plug
(see detail below)

Supply input
1.4–4.2 bar (20–60 psi)

Supply output to
actuator diaphragm

Transducer

Fig. 4: I/P Positioner

Adjusting nut