Actuators

scotch-yoke actuator, 90°

Pneumatic actuators, gas actuators, hydraulic actuators, electro hydraulic actuators, gas over oil actuators from 10 - 330,000 Nm for 1“ to 60“ valves.

Fahlke offers the perfect solution to automate your processes in a single line of actuators for every application.

Our standard deliveries include the following actuators and controls:

• Pneumatic actuators and controls
• Gas actuators / gas over oil actuators and control
• Electro hydraulic actuators (operating with either direct or alternating current)
• Low temperature actuators down to temperatures of -60° C
• SSV / SDV actuators and controls
• Safety shut-down units (SSV) in accordance with newest DIN/EN 14382
• Subsea actuators for depths of up to 250 m
• Linear actuators for gate valves, globe valves etc. and controls
• Special actuators and controls according to customer specifications
• Complete assembly units (ball valves installed and adjusted using one of the above-named actuators)

Seven actuator sizes in the torque range from 10 to 330,000 NM (higher torques on request)are available. The Fahlke actuator line covers all pressure ranges, all standard types for pneumatic, gas or hydraulic applications as well as individualized designs according to customer specifications.

For applications where safety is a concern, Fahlke offers piston or bladder accumulators for spare strokes, hand pumps, hand wheels and multiple spring technology, or solar and battery power supplies.

Naturally, all Fahlke actuators are maintenance and corrosion free and are fully impermeable to water in accordance with IP 68.

Fahlke also offers matching controller systems which have been tailor-made to your precise specifications, developed using the latest technology and manufactured to the highest quality standards.

Our actuators fit on any valve

Fahlke actuators can be mounted on any valve. This is ensured by a flange and adaptor system only available from us that allows any Fahlke actuator to be mounted in a matter of minutes. Which also permits subsequent retrofits on different valves.

Fahlke valve adaption is precisely manufactured according to the valve specification. This, in turn, allows Fahlke actuators to be set up very quickly on any valve.

Fahlke spring-loaded actuator

The figure illustrates an example of a Fahlke spring-loaded (SR) actuator: the primary components with the scotch yoke arm and the working cylinder (on the right) together with the spring container which is also available in multiple spring technology.

Fahlke spring return actuator example:

The following illustration shows the inside of a Fahlke spring return (SR) actuator: The main parts are spring cartridge (left), actuator housing (mid) and working cylinder (right). For multi-spring technique see Fahlke SSV units.

FAHLKE actuator end stops are situated in the cylinder center and will take high thrusts without distorsion.

$11.        FAHLKE actuator spring cartridges are fitted with slide bearings to ensure smooth running of the cylinder.

$12.        FAHLKE spring cartridges increase safety for the actuator valve unit because of short operating times.

$13.        FAHLKE split housing facilitates variable mounting of acting cylinders and emergency operation components at the integrated grooved ring even after putting into operation.

$14.        FAHLKE actuator housing is filled with a special grease ensuring lubrication of all moving parts inside the housing. Any danger of corrosion to the moving parts is averted.

$15.        The actuator housing is equipped with FCS safety valve to relief over pressure (not shown in this illustration).

$16.       FAHLKE lever slide blocks are made of a special brass.

$17.        The actuator lever is supplied with FCS bearing bushes that guarantee smooth running and withstand high thrust.

$18.       FAHLKE seals on the lever make use the actuator under extreme environmental conditions possible.

$19.       FAHLKE cylinder sleeves, plunger, and bottoms are chemically nickel-plated to avoid corrosion by the operation fluid.

$110.     FAHLKE actuator end stops of pneumatic, gas or hydraulic cylinders are covered with a protection cap.

$111.      The FAHLKE actuator is IP68. For corrosion prevention the housing screws are fitted to the bottom of the housing.

$112.     FAHLKE actuator housing is equipped with adapter holes for standard position switch and controls.

$113.     FAHLKE actuators have a covered relief hole (not shown in this illustration) to prevent pressure building in the connection between valve and actuator in case of valve stem leakage.

$114.     FAHLKE actuator lever is supplied with an octagonal connection that facilitates flexible adaption to every valve in connection with the actuator spool.

$115.     FAHLKE adapter spool (not shown) will be equipped with the specified valve shaft trim.

$116.     FAHLKE adapter flange is suited to the valve dimensions

$117.     FAHLKE guide bearings of the piston rods are supplied with high-pressure proof sealings and special bearings.

$118.     FAHLKE cylinders and emergency operating devices can be turned to any position because of the grooved ring.

$119.     FAHLKE plunger guide bearings and sealings are designed for heavy-duty and maintenance free operation.

For detailed control specification please contact Fahlke Control Systems.