Introduction
The document discusses the Bray/McCannalok Series 40 high-performance butterfly valves, designed for high-pressure, high-temperature, and zero leakage applications. These valves are available in wafer and lug body styles, suitable for sizes ranging from 2 1/2" to 54" (65-1400mm) and ANSI Class ratings of 150, 300, and 600.

Specifications
The Series 40 valves feature a double offset stem and disc design for reduced seat wear and bidirectional, zero leakage shut-off. Constructed from materials like carbon steel or stainless steel, the valves operate within a temperature range of -20°F to 500°F (-29°C to 260°C).

Design and Features
The valves incorporate a patented seat design with a resilient energizer encapsulated by an RTFE seat, ensuring superior sealing and extended service life. Additional features include an internal travel stop, a blow-out proof stem, and an adjustable stem packing system.

Fire Safe Design
Available with bidirectional fire-safe seats for specific sizes and classes, the Series 40 valves meet international fire-test standards, ensuring reliable control of flammable and hazardous fluids.

Applications
These valves are suitable for various applications, including corrosive chemicals, steam, dry chlorine, sea water, and more. They are approved by the U.S. Coast Guard and American Bureau of Shipping for specific uses.

Customization and Options
Bray offers customization options, including different seat and body materials and special trims, to meet specific application requirements.

Conclusion
The Bray/McCannalok Series 40 valves offer high performance, reliability, and versatility for demanding industrial applications, complying with stringent safety standards.

1. Specifications:
Details on valve sizes, dimensions, mounting data, and pressure ratings are provided, organized by valve size with measurements in inches and millimeters.

2. Procedures:
Procedures for determining torque requirements emphasize considering dynamic torques and using torque charts for different media types.

3. Standards:
Valves are categorized under ANSI standards, with different series corresponding to pressure classes and material specifications.

4. Recommendations:
Recommended control angles for valve sizing are between 25°–70° open, with a preferred angle of 60°–65° open.

5. Key Data from Tables and Charts:
Includes valve sizes, pressure ratings, torque requirements, and pressure/temperature relationships.

6. Materials:
Materials used in valve construction include stainless steel and carbon steel, with specific ASTM grades mentioned.

7. Exploded View:
An exploded view details the components and materials used in Series 40 valve construction.

Materials of Construction: The document outlines materials used in standard valve construction, referencing specific ASTM standards.

Fire Safe Valve Features: Specifies components used in fire-safe valves, with additional materials available upon consultation.

Product Information and Recommendations: Provides general statements and technical information, advising consultation with Bray representatives for specific requirements.

Automation and Actuation: Series 40 valves can be automated with Bray's pneumatic and electric actuators, designed for low-cost automation.

Performance Advantages: Highlights cost savings, lower torque requirements, and reduced weight and space compared to other valve types.

Contact Information: Provides contact details for Bray International, Inc.