Threaded Ball Valve S20/FS20 Series

faq: items: - question: Is this series suitable for sour gas environments containing hydrogen sulfide? answer: Yes. The S20/FS20 Series complies with NACE MR0175 and can be used in sour gas environments containing H2S and other corrosive gases, providing corrosion resistance against sulfide stress cracking risks. Actual selection should still consider media composition, pressure, temperature, and site conditions. - question: What are the pressure, temperature, and size ranges of the S20/FS20 Series? answer: This series offers sizes from 1/4 to 2 inches (8 to 50 mm), maximum allowable working pressure of 2000 psi WOG (137 bar), and temperature range of -46°C to 232°C. Valves feature reduced-port design, one-piece body, and NPT threaded connections; specific configuration depends on the actual model and application conditions. - question: What value does the one-piece body and bottom-entry blowout-proof stem offer for field use? answer: The one-piece body reduces potential leak paths and simplifies seat and seal replacement for maintenance. The bottom-entry blowout-proof stem enhances stem structural safety; live-loaded self-adjusting stem packing compensates for wear and temperature changes, helping maintain low operating torque and long cycle life. - question: Why is the FS20 equipped with an anti-static device, and what applications is it suitable for? answer: The FS20 features an anti-static device that grounds the ball and stem to the body, reducing static buildup and electrostatic discharge risk. This configuration is suitable for applications where electrostatic discharge is a hazard, particularly in oil and gas and other industrial applications requiring fire safety and sour gas service capability.

Overview

API 607 certified valves for fire-safe performance and durability under high-temperature conditions

NACE MR0175 Valves for Corrosion Resistance in Sour Gas Environments Including H2S

Bray’s S20/FS20 Series one-piece reduced-port threaded ball valves offer exceptional reliability in demanding industrial ball valve applications such as oil and gas facilities. They comply with NACE MR0175 for corrosive environments, including sour gas (H2S - hydrogen sulfide) and SSC (sulfide stress cracking) applications, with optional API 607 fire-safe certification (FS20). The S20/FS20 Series reduced-port threaded ball valves feature a high-quality investment cast stainless steel body with cast heat codes for full traceability. The one-piece body reduces potential leak paths and simplifies seat and seal replacement for easy maintenance, extending valve service life. S20/FS20 threaded ball valves also feature a bottom-entry blowout-proof stem and live-loaded self-adjusting stem packing that automatically compensates for wear and temperature changes, ensuring low operating torque and high cycle life. S20 threaded ball valves use RPTFE seats and seals with a vinyl-coated stainless steel safety locking handle, fully compliant with NACE MR0175. FS20 threaded ball valves are rigorously tested and API 607 fire-safe certified, featuring FPTFE seats, adjustable graphite stem and body seals for preventing external leakage under high-temperature conditions. FS20 Series valves also include anti-static devices that ground the ball and stem to the body, preventing static buildup in areas where electrostatic discharge is a hazard, and comply with NACE MR0175. In the event of a fire, after the primary RPTFE soft seat is destroyed by heat, the ball contacts a secondary metal seat to form a robust metal-to-metal seal. This backup metal seat seal ensures continued equipment operation. Optional oval handle: an optional oval handle is available for operator preference.

Technical Specifications