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Automator Rotary Diaphragm Actuator

Brand: Flo-Tite Valves and Controls Inc

By utilizing proven spring material, advanced filler reinforced diaphragm technologies, precision engineering of the crankshaft, and the connection rod design, the SRD Spring Diaphragm Rotary Actuators are developed specifically for quarter turn valve automation applications to provide safe and reliable operation even with minimal media supply pressure. 

The design separates the supply power media chamber from the spring sets allowing the actuator to be operated by unfiltered air, gas, water, or mineral-based hydraulic fluid. 

The housing is constructed using a ductile iron and carbon steel casting that is coated with a polyester powder process to ensure exceptional corrosion resistance in most field environments. 

The independent media chamber is also equipped with a Buna-N diaphragm reinforced with special compound polyamine fabric, allowing the actuators to work in the temperature conditions from as alow as -40°F to +390°F.
Features
Universal Mounting Pads - Direct Mount
  • A combination of different mounting dimensions allow users to directly replace other existing spring diaphragm actuators or mount directly to new and existing quarter turn values.
Namur Mount
  • The design of the unit makes it easy to mount to various control accessories, such as limit switches, solenoid valves, positioners, and declutchable manual overrides.
Multiple Drive Bushings (Removable & Replaceable)
  • The removable drive bushings allow users to mount SRD actuators to a number of different valve stem configurations whether in the field on existing valves or new valve applications.
High-Cycle Life Design & Low-Friction Bearing
  • The actuators feature a rolling diaphragm design with a one piece diaphragm retainer and its UHMWPE bearing which helps achieve superior longevity of the life cycle and exceptionally smooth actuation due to the low friction generated during operations. Cycle life is over one million cycles
Reversible in Field Fail-Open or Fail-Closed Option
  • By simply inverting the actuator and bushings, the SRD actuators can be quickly and easily changed to fail-open or fail-closed position in the field.
Torque Ranges
  • The SRD actuators provide various output torque ranges: from 133 in-lbs to 12,682 in=lbs depending on the actuator size, spring configuration, and available media supply pressures.
Supply Pressures
  • The SRD series actuators can be operated with numerous designated media supply pressures ranging from 15 psig to 100 psig.
Supply Media
  • The SRD Series actuators can be operated by air, gas, water, or mineral-based hydraulic fluid.
Travel Stops 
  • There are two adjustable travel stops that allow actuators to be adjusted to the fully open or fully closed positions. With extended adjustment bolts, the actuators can be used to adjust a rotary control valve from 60-95 degrees.
Mechanical Lockout Option
  • A lockout screw is used to positively lock the unit in the spring failure mode.
Corrosion Resistant
  • Standard surface body and cover are fully applied with a UV Protection polyester powder coating combined with stainless steel external fasteners providing durability and protection in a corrosive environment. A PTFE coating is also available as an option.
Maintenance Free Lubrication
  • All actuators are lubricated at the factory during the time of production. No further lubrication is required during the life cycle.

Documentation

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