Overview: This document provides technical specifications and details for pressure relief valves designed for air, steam, vapor, and liquid services. These valves are built in accordance with ASME Code Section VIII and are certified by the National Board.

Bill of Materials: The document lists materials used for each component of the valve, such as brass for the body and disc, stainless steel for the stem and spring, and bronze for the bonnet.

Selection Table: Provides details on valve types, sizes, materials, and maximum set and back pressures for different services (air, steam, vapor, liquid).

Dimensions & Weights: Includes measurements for different valve types and their approximate weights.

Capacity Tables:

• Water: Capacities in U.S. gallons per minute at 70°F with 10% overpressure.
• Steam: Capacities in lbs. per hour at saturation temperature with 10% overpressure.
• Air: Capacities in standard cubic feet per minute at 60°F with 10% overpressure.

Notes:

• Capacities at 30 PSIG and below are based on 3 PSI overpressure.
• Water capacity at 25% overpressure can be calculated by multiplying the 10% capacity by 1.066.
• Maximum set pressure for steam service is 240 psig.

General Notes: Includes information on type numbers, test lever requirements, and sizing coefficients for discharge.

Disclaimer: The document includes a disclaimer regarding the accuracy and reliability of the information provided, and reserves the right to alter designs or specifications without notice.