ANSI (American National Standards Institute) rating refers to the pressure class and design standards that a flanged ball valve must meet. Common ANSI classes include 150, 300, 600, and higher, indicating the valve’s pressure and temperature capabilities.
These valves are commonly made from stainless steel, carbon steel, or ductile iron. For more demanding applications, materials like duplex stainless steel and exotic alloys may be used.
The selection depends on system pressure, temperature, and media compatibility. ANSI 150 is suitable for lower-pressure applications, while ANSI 300 and higher are used for more demanding conditions.
They typically feature RF (Raised Face) or RTJ (Ring Type Joint) flanges, which allow them to be securely bolted to piping systems according to ASME B16.5 standards.
Yes, but it depends on the material and seat design. Metal-seated valves can withstand higher temperatures than soft-seated options like PTFE or RTFE.
These valves are widely used in oil and gas, petrochemical, water treatment, power generation, and industrial processing applications requiring reliable flow control.
They provide robust sealing, easy installation, reliable performance under pressure, and compatibility with standard pipeline flanges, reducing the need for custom connections.
Yes, they can be equipped with pneumatic, electric, or hydraulic actuators for remote and automated operation.
Yes, periodic inspection, lubrication (for metal-seated valves), and checking for seat wear or leakage help ensure long-term performance.
Most designs allow bidirectional flow, but always check manufacturer specifications as some valves have a preferred flow direction for optimal sealing.
ANSI 150 valves are rated for lower pressure (typically up to 285 PSI at ambient temperature), while ANSI 300 valves can handle higher pressures (up to 740 PSI at ambient temperature).
