Spirax Sarco positioners, controllers and sensors improve valve response, feedback accuracy and control visibility across steam and industrial process systems.
Feedback hardware becomes useful only in the context of the final valve assembly. Continue into steam control valves when the positioner choice depends on the installed valve duty, and use pneumatic actuators when the immediate comparison is actuator format rather than signal hardware.
If the project is moving toward lower routine air use or electric drives, compare electric actuators.
The EP5 is a Spirax Sarco traditional electro-pneumatic valve positioner for applications that need stable valve positioning with a straightforward design. It accepts a 4-20 mA current signal or 0.2-1.0 bar pneumatic signal, fits
The Spirax Sarco EP500 is a standard electro-pneumatic positioner for linear and rotary pneumatic control valves. It uses a 4-20 mA input signal with split-range capability, integral pressure gauges, central or offset mounting and
The Spirax Sarco SP400 is a loop-powered electro-pneumatic valve positioner for linear and 90 degree rotary pneumatic valves. It uses a 4-20 mA input signal, non-contact valve position feedback and automatic air output correction
The Spirax Sarco SP500 is an enhanced loop-powered electro-pneumatic smart positioner for linear and rotary pneumatic valves. Building on the SP400 platform, it adds optional HART communication, diagnostic data logging, retransmis
Spirax Sarco SP7-10, SP7-11 and SP7-12 smart positioners control pneumatic linear or rotary actuators and support 4-20 mA, HART, PROFIBUS PA or Foundation Fieldbus communication routes.
The Spirax Sarco SX80 is a 1/16 DIN panel mount process controller offering universal input for RTD and thermocouple signals, universal output with VMD 3-point, 4-20 mA analog, relay and logic, PID auto-tuning, 3 setpoints and a b
The Spirax Sarco SX90 is a 1/8 DIN panel-mounted process controller for industrial temperature and pressure control, with universal process inputs, configurable PID control, and selectable VMD, analogue, relay and logic outputs.
Spirax Sarco GS-X1 is a compact panel-mounted programmable single-loop PID controller with one universal process input, configurable control outputs and optional serial or Ethernet integration for thermal and other process control
GS-X2 is a 1/8 DIN panel-mounted programmable single-loop PID controller with one universal process input, an optional second input, configurable I/O, isolated 24 Vdc transmitter power and standard EIA-485 communications for therm
GS-X3 is a 1/4 DIN panel-mounted programmable single-loop PID controller with one universal process input, an optional second input, configurable I/O, isolated 24 Vdc transmitter power and standard EIA-485 communications for therm
A 4-20 mA electro-pneumatic positioner for NAMUR-compatible linear and rotary pneumatic valve actuators, with safe-area and approval-specific Ex configurations.
