Series 98 Scotch Yoke Pneumatic Actuator Product Image
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Scotch Yoke Pneumatic Actuator Series 98

Bray Series 98 pneumatic actuators, built with superior design and precision manufacturing, are part of our modular and fully configurable product line, optimized for direct mounting on Bray valves, improving flexibility and efficiency while reducing costs.

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Product Overview

High-torque modular actuator for demanding applications

High Torque-to-Weight Ratio Pneumatic Actuator for Industrial Automation

Built with superior design and precision manufacturing, Bray Series 98 pneumatic actuators are part of our modular and fully configurable product line, optimized for direct mounting on Bray valves, improving flexibility and efficiency while reducing costs. Series 98 actuators are primarily designed for pneumatic operation with maximum pressure up to 150 psi (10.3 bar) and temperature range of -50°F (-46°C) to 300°F (+149°C). Features Compact design with high torque-to-weight ratio Modular design for easy field configuration Precision-machined centering rings ensure module alignment Output torque range of 2,744 to 885,100 in-lb (310 to 100,000 Nm) Spring end torque range of 2,744 to 445,261 in-lb (310 to 50,306 Nm) Standard high-grade epoxy/polyurethane coating Operating Conditions Pressure range: 40 - 150 psi (2.8 - 10.3 bar) Medium: Dry compressed air / inert gas Temperature range options: Standard: -20°F to 200°F (-29°C to 93°C) High temperature: Up to 300°F (149°C) Low temperature: Down to -50°F (-46°C) Torque basis: Mounting dimensions per ISO 5211: 2001(E) Accessories: Shaft-driven accessory mounting per NAMUR-VDE standard Performance testing: EN 15714-3:2009 Ingress protection: IP66/IP67M per IEC 60529 Safety: ATEX, SIL 3 capable, PED (upon request)

Technical Specifications

ParameterValue
Output Torque2,744 to 885,100 in-lb (310 to 100,000 Nm)
Control OptionsOn/Off, Direct Drive, Spring Return
Temperature Range-50°F to 300°F (-46°C to 149°C)
Power SourcePneumatic
Maximum Allowable Operating Pressure40 - 150 psi (2.8 - 10.3 bar)
Ingress ProtectionIP66/IP67M per IEC 60529
MountingISO 5211: 2001(E), MSS SP-101-1989
Supply MediumDry Compressed Air, Inert Gas
CertificationsATEX, PED, SIL 3, ABS
Test StandardEN 15714-3:2009
OptionsSymmetrical Yoke, Canted Yoke, Extended Stop, Hydraulic Override, Jacking Bolt, Jacking Bolt Gear Drive Override, Hydraulic Damper, Partial Stroke/Locking
Valve CompatibilityBall Valves, Butterfly Valves
ApplicationEmergency Shutdown

FAQ

What valves is the Bray Series 98 scotch yoke pneumatic actuator suitable for?

The Series 98 is designed for pneumatic operation of ball and butterfly valves, suitable for on/off control, direct drive, and spring return configurations, and can be used in emergency shutdown applications. Specific actuator configuration depends on valve torque, operating mode, and actual application conditions.

What are the torque range and supply pressure requirements for the Series 98 actuator?

The Series 98 output torque ranges from 310 to 100,000 Nm, with spring end torque from 310 to 50,306 Nm. Working pressure range is 2.8 to 10.3 bar, using dry compressed air or inert gas as the supply medium. Selection should verify valve opening/closing torque against available supply pressure.

How do I choose between symmetric yoke and canted yoke configurations?

The Series 98 offers both symmetric and canted yoke options. Different yoke configurations provide different torque output characteristics and should be selected based on valve torque requirements during opening, closing, and mid-stroke. Specific configuration depends on the actual model and application conditions.

Can the Bray Series 98 be used in high or low temperature environments?

Yes. The standard temperature range is -29°C to 93°C; low-temperature configuration goes down to -46°C, and high-temperature configuration up to 149°C. For complex temperature fluctuation, environmental, and media conditions, confirm the selected temperature range matches site requirements.

What are the mounting interface and ingress protection ratings for the Series 98 actuator?

Valve mounting dimensions comply with ISO 5211:2001(E) and MSS SP-101-1989; shaft drive accessories mount per NAMUR-VDE. Ingress protection is IP66/IP67M per IEC 60529, with performance testing per EN 15714-3:2009.

Documents

Product Brochure - Actuators and ControlsProduct information · EnglishProduct Brochure - Valve Automation Center (VAC)Product information · EnglishProduct Brochure - Pneumatic Actuators Series 98Product information · EnglishProduct Brochure - Attuatore Pneumatico con Sistema Scotch and Yoke Serie 98Product information · EnglishApplication Guide - Turbine Trip and Anti-Surge ValvesProduct information · EnglishIOM Manual - Series 98 Pneumatic and 98H Hydraulic Scotch Yoke ActuatorsManual · EnglishIOM Manual - Series 98 Pneumatic and 98H HydraulicManual · ChineseIOM Manual - Pneumatique Série 98 Et Hydraulique Série 98H Actionneur Scotch YokeManual · EnglishSafety Manual - Pneumatic Actuators Series 98Manual · EnglishTechnical Sales Manual - Pneumatic Scotch Yoke Actuators Series 98Manual · EnglishIOM Manual - Pneumatique Série 98 Et Hydraulique Série 98H Actionneur Scotch YokeManual · EnglishSales Data Sheet - pneumatický pohon s kulisovým mechanizmem (Scotch Yoke) typ 98Product information · EnglishSales Data Sheet - Series 98 Pneumatic Scotch Yoke ActuatorsProduct information · EnglishSales Data Sheet - Actuador Neumático Yugo Escocés Serie 98Product information · English

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