Styling, strength, compactness, and simplicity of design have been combined to produce the Bray Series 92 direct acting and the Series 93 spring return pneumatic actuators.
Engineering excellence and precision manufacturing has produced a modular product line with reduced overall size requirements and economic savings. In addition all Bray accessories are fully modular and directly mount to the actuator – providing flexibility and efficiency at reduced cost.
Bray Series 92/93 actuators are rack and pinion, opposed-piston actuators available in two versions: double acting for rotation of 90°, 135° and 180°, and spring return for 90° rotation.
The Series 92/93 actuators were designed primarily for pneumatic operation up to a maximum pressure of 140 psig (10 Bar) and for temperature ranges of -4°F to 200°F (-20°C to 93°C). For higher and lower temperature applications, consult Jamieson Equipment Company.
All double acting and spring return units are suitable for both on/off and throttling applications. Actuators which can be actuated with other media such as hydraulic oil or water are also available as an option.
The Series 92/93 is completely enclosed and self contained. The many features minimize maintenance and provide safe, simple disassembly and assembly.
Specifications:
• Torque: to 44,130 Lb-in (4,986 Nm)
• Pressure Rating: Max Pressure: 140psig (10 Bar)
• Temperature Range: Standard: -4°F to 200°F (-20°C - 93°C)
• Low: -40°F to 176°F (-40°C - 80°C)
• High: 0°F to 300°F (-18°C - 149°C)
• Body Materials: Extruded Aluminum Alloy, Anodized 316 Stainless Steel, Electroless Nickel Plated Body Exterior, Hard Anodized Body Exterior
• Output Shaft/Pinion: Carbon Steel, Zinc Plated, Stainless Steel
General:
• The actuator shall be pneumatically operated and must travel a minimum of 95º in each direction to allow for over travel adjustment.
• The actuator shall be rack and pinion design and the output torque shall be linear throughout travel.
• The actuator shall be totally enclosed in a single enclosure with no external moving parts.
• The actuator shall be factory lubricated with no field lubrication required.
• The actuator shall be able to mount in any position without loss of performance.
• All actuators (double acting or spring return) shall be suitable for both on-off and throttling applications.
Housing and End Caps:
• Housing design must have smooth lines to provide for self-drain capability.
• Housing shall be extruded, anodized aluminum alloy and all external fasteners shall be zinc plated carbon steel.
• All pneumatic passageways must be integral to the actuator housing to eliminate the need for external tubing.
• End caps shall be die cast aluminum alloy with corrosion resistant polyester coating.
• All seals shall be Buna-N and bearings shall be manufactured out of lubricated acetal resin.
Pistons:
• Shall be die cast aluminum alloy.
• Shall be provided with acetal piston guides and rings to extend the life of the actuator and reduce friction.
Output Shaft and Pinion:
• Must be manufactured out of hardened alloy steel and zinc plated for corrosion protection.
• Shall be a one piece design.
• The output shaft shall be provided with a mechanical, high visibility position indicator.
Travel Stops:
• The actuator must be supplied with two independent travel stop adjustments (one on each end of travel)
• Each end of travel (0º and 90º) shall have a minimum of +5º to -5º adjustment.
Spring Return System:
• Must be installed in the same housing as the double acting actuator with no additional housing extensions.
• Must be furnished as a self-contained spring cartridge system to assure safe disassembly of the actuator.
• Springs shall be coated spring steel for corrosion protection.
Service Requirements:
• Actuators shall be designed for pneumatic operation for the following service conditions:
• Pressure up to a maximum of 140 psig
• Available temperature ranges of -40°F (-40°C) to 300°F (149°C)
• Filtered air is recommended but not required.
• Optional units shall be available to operate with hydraulic oil or water if specified.
Testing:
• All actuators shall be factory tested to ensure proper operation.
Mounting:
• All actuators shall mount directly to the valve mounting flange and stem without the need for any brackets or couplings
Approvals & Certifications:
• SIL Certification
• ABS Certification
• Bureau Veritas Certification
