TM25LP Linear‐Proportional Actuators

The TM-25/200LP actuators provide 25 mm (1 inch) of linear movement of valves for steam or gas turbines.

The TM-25LP and TM-200LP actuators are electric-hydraulic, proportional actuators for positioning

steam and fuel-control valves requiring low/high force linear inputs.

Factory setting determines if the actuator output shaft extends or retracts on increasing current.

The actuators have aluminum cases and through-hardened stainless-steel internal parts.

A 40 µm low-capacity screen is provided in the supply inlet fitting to protect the torque motor servovalve in case of failure of the external filter.

The units will operate with either centrifugal or fixed-displacement type pumps providing hydraulic pressure.

The actuators are calibrated at the factory for bias in the minimum-fuel direction in event of the loss of input current.

A dual-coil torque motor is optional for redundancy. The dual-coil actuator has an optional position-feedback transducer.

For more information, refer to Woodward Manual 82450.

TM25LP

ATEX – Potentially Explosive Atmospheres Directive:

Declared to 94/9/EC COUNCIL DIRECTIVE of 23 March 1994 on the approximation of the laws of the Member States

concerning equipment and protective systems intended for use in potentially explosive atmospheres.

TM-25LP Single Coil: LCIE 12 ATEX 3022 X; Zone 1,

Category 2, Group II, Ex e IIC T4 Gb IP54

TM-25LP Dual Coil: Zone 2, Category 3, Group II, Ex nA

IIC T4 Gc IP54; LCIE 12 ATEX 3064 X; Zone 1,

Category 2, Group II, Ex d IIB T4 Gb c IIB T4 IP54

 Proportional electric-hydraulic

 25 mm (1 inch) linear output

 Maximum work ratings from 72 to 231 J (53 to 170 ft-lb)

 Corrosion resistant construction

 Models are available with certification for Canada Hazardous Locations

 Models are available with listings for United States Hazardous Locations

 Models are available compliant with the applicable CE

Directives —ATEX, Pressure Equipment, Machinery

 Models are available with TIIS and Korea-KC certification for use in hazardous locations