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Radius AS-012 Operation And Instruction Manual

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RADIUS LLC
4922 Technical Drive
Milford, Mi 48381
There are two series of RADIUS rack & pinion air actuators: those with aluminum bodies and those with
nodular iron bodies. For a better understanding please refer to the table below.
Aluminum actuators
Cast iron actuators
The technical features of the aluminum actuators are listed below. If further information on nodular cast
iron is required, please contact RADIUS.
DESCRIPTION
RADIUS actuators are quarter turn actuators; that is to say that the actuator shaft turns 90°, although some
models can be ordered with turning angles of up to 180°. The design of these actuators uses the system of a
double rack – single pinion. One of the most outstanding features of RADIUS actuators, available only
with the aluminum models, is its proprietary, revolutionary double travel stop system. This system allows a
complete regulation of the opening and closing of the aperture without having to remove the covers.
The standard units produce a torque between 132 and 52,660 lb. in. at 80 psi that, together with the shaft's
output range and its modular design, allows the attachment of a wide variety of control accessories.
ATTACHMENT OF THE ACTUATOR
The RADIUS actuators can be installed directly or by using an adapter on the shaft of any valve. They
have a female coupling machined directly on the shaft that meets DIN-3337 and ISO-5211 standards.
RADIUS also offers a complete range of accessories to complement any coupling concept.
INSTALLATION OF THE ACTUATOR
The RADIUS actuators are normally installed so that their longitudinal axis is parallel to the direction of
the pipeline. The actuators can be installed on top, on the side or underneath the valve they are to attach to
without affecting their operation in anyway.
The actuator output shaft is completely machined and in the shape of an eight pointed star, following DIN-
3337 and ISO-5211 standards, which allows the actuator to be oriented in a way that can adapt to nearly
every installation.
Double action
series 003 through 500
series 750 only
1
SERIES A
OPERATION AND
INSTRUCTION MANUAL
Single action
series 003 through 500
series 750 only

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Summary of Contents for Radius AS-012

  • Page 1 ATTACHMENT OF THE ACTUATOR The RADIUS actuators can be installed directly or by using an adapter on the shaft of any valve. They have a female coupling machined directly on the shaft that meets DIN-3337 and ISO-5211 standards.
  • Page 2 FEATURES AND OPERATING PRINCIPLES 1. Basic Actuator The RADIUS actuator shaft rotates a full 90° (some models can be ordered with a 180° rotation angle). The opening rotation is achieved, both in the double and single action models, by supplying air pressure into the piston chambers.
  • Page 3 2. Manual Operation In the event of an air supply failure, the RADIUS actuators can be operated manually. This can be done using an adjustable wrench on the upper part of the actuator shaft, turning it in the desired direction.

  • Page 4: Air Supply Connections

    AIR SUPPLY AND ELECTRICAL INSTALLATION A) AIR SUPPLY RADIUS actuators are correctly lubricated at the factory. All lubricants are silicone free. The use of dry, clean, air or gas is recommended for optimal operation. Although lubrication of the media is not essential, it is recommended.

  • Page 5: Maintenance

    All the actuators are supplied sufficiently lubricated for their normal life. The lubricants are silicone free. In the event that the actuators should require lubrication, the use of OPTIMOL OLIT2 grease is recommended. Grease for high and low temperatures are also available, but please consult RADIUS before using it.

  • Page 6: Recommended Spare Parts

    All the replacement parts kits are identical for the double and single action versions and for all aluminum actuators. RADIUS also recommends a spring replacement kit for each model. These spring must be replaced in complete sets. In each kit of springs, both springs and pre-tensors are supplied.
  • Page 7 RADIUS LLC SERIES A 4922 Technical Drive OPERATION AND Milford, Mi 48381 INSTRUCTION MANUAL DISASSEMBLY AND ASSEMBLY OF AN ACTUATOR Although assembly and disassembly of an actuator is not recommended, in certain cases it might be necessary to do so. For the disassembly and subsequent assembly of the actuator, follow the following steps: 1.
  • Page 8 RADIUS LLC SERIES A 4922 Technical Drive OPERATION AND Milford, Mi 48381 INSTRUCTION MANUAL SINGLE ACTION ACTUATOR When it is necessary to replace the springs of a single action actuator, make sure that the springs are installed in the same position as before.
  • Page 9 RADIUS LLC SERIES A 4922 Technical Drive OPERATION AND Milford, Mi 48381 INSTRUCTION MANUAL AS030A / AS060A / AS100A / AS200A / AS370A 10 Spring Set 12 Spring Set 14 Spring Set 16 Spring Set 18 Spring Set Install the springs over the piston face within the seats that are on the piston.
  • Page 10 INSTRUCTION MANUAL ADJUSTMENT OF THE ACTUATOR STOPS Another outstanding feature of the Radius actuator is patented double travel stops that are provided standard on all series A actuators. This system allows for the adjustment of the open and close position without having to disassembly the actuator.
  • Page 11 Actuator installed improperly on valve Check for proper installation/ correct * The Radius actuator is corrosion resistant inside and out by design. There may be instances of environmental chemicals that attack the actuator and can cause failure. These instances are rare so please consult the factory before assuming the failure is...