DREHMO Electromechanical Valve Actuators

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Product Details

Heavy-duty electromechanical valve actuators with over 90 years of heritage, manufactured by DREHMO GmbH — a member of the AUMA Group. Available in multi-turn, part-turn and linear thrust configurations with three integral control variants: c-matic, i-matic and x-matic (explosion-proof).

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▸ Key Features
  • Planetary gear design — wear-resistant, lifetime oil fill, virtually maintenance-free
  • Sturdy aluminium alloy housing, mountable in any position
  • Contactless COMBI sensor for torque and position measurement (c-matic, i-matic)
  • LEARN function for fast, reliable limit position setup
  • Handwheel operation without switch-over mechanism — always available
  • Automatic phase sequence correction — prevents wiring-related valve damage
  • Soft start / soft stop with configurable progress characteristics
  • Torque bypass for tightly seated valves (up to 127% of set torque)
  • LC display with push-button interface and Bluetooth parameterisation (i-matic)
  • Datalogger, electronic nameplate and local valve diagnostics for predictive maintenance (i-matic)
  • Accumulator pack option — maintains control unit for up to 3 hours during power failure (i-matic)
  • Explosion-proof version: x-matic (ATEX / IECEx certified)
  • Long-term spare parts availability and service throughout the full plant lifecycle
▸ Technical Specifications
Parameter Specification
Multi-turn torque (D series) 30–2,000 Nm
Part-turn torque (DP series) 75–1,800 Nm
Linear thrust (D + DSE units) Available via thrust unit attachment
Duty classification On-off (S2, max. 15 min) and modulating (S4, max. 35% ED)
Control variants c-matic (integral), i-matic (advanced diagnostics), x-matic (explosion-proof)
Fieldbus interfaces (i-matic) Profibus DP (V0/V1/V2), Modbus RTU, Foundation Fieldbus H1, HART
Output contacts 6 programmable NO contacts + 1 change-over (i-matic)
Enclosure protection IP67 / IP68 (IEC 60529)
Corrosion protection K3
Ambient temperature -25 to +70°C
Valve attachment EN ISO 5210 (multi-turn), EN ISO 5211 (part-turn)
Mounting Any position; control unit separable for wall-mounting
▸ Applications
  • Power generation
  • Oil and gas — fields, pipelines, tank farms and terminals
  • Chemical and petrochemical process industries
  • Water and wastewater treatment
  • Gate, globe, ball, butterfly valves and dampers
  • Hazardous areas (x-matic with ATEX / IECEx certification)