iPAC Solutions

Valve Positioners

Pneumatic Positioner- SRR981

The Pneumatic Positioner SRP981 with pneumatic input 0.2-1 bar is designed to operate pneumatic valve actuators and is available in the version ATEX-constructive safety and in connection with the accessories in EEx ia / intrinsic safety.

The adaptation and settings of zero an span can easily be achieved by the knurled-head screw.

Pneumatic Input Signal:

  • Independent adjustment of zero and span
  • Adjustable amplification and damping
  • Split-Range up to 4-fold

Common Features:

  • Stroke 8 to 100 mm (0.3 to 4.0 in), extended stroke range on request
  • Angle range up to 120?
  • Characteristic curves by cams
  • Supply air pressure up to 6 bar (90 psig).
  • Built-in pressure gauges (optional)
  • Low air consumption
  • Low vibration effect in all directions
  • Single or double-acting
  • Mounting on linear actuators according to IEC 534, Part 6 (NAMUR)
  • Mounting on rotary actuators according to VDI/VDE 3845
  • Protection class IP54, IP65 (on request)
  • Explosion protection: Basic unit: II 2 G c IIC (ATEX-constructive design)
  • Certificate No. 90/20226 (E2) “Lloyd’s Register of Shipping” for use on vessels


  • II 2 G EEx ia IIC acc. to ATEX
  • “Intrinsic Safety” acc. to FM and CSA

Modular System For Accessories:

  • Built-in independent inductive limit switches in 2-wire, 3-wire or microswitchtechnology (optional)
  • Independent position feedback 4 to 20 mA (optional)
  • Booster Relays with an air capacity of up to 110,000 ln/h (3,884 scfh)
  • Connection Manifolds and gauges