Anti-Blowout Stem in Ball Valves: Safety Design and Selection Guide
Learn why anti-blowout stems are an essential safety feature in industrial ball valves. The guide explains how an internally retained stem design prevents pressure-driven stem ejection, how floating and trunnion ball valves can incorporate stem retention, and what buyers should verify through cross-section drawings, applicable API or ISO standards, fire-safe requirements, pressure-temperature ratings, material records, and inspection documentation.
Floating vs Fixed Ball Valves: Key Differences Explained
Compare floating and fixed (trunnion-mounted) ball valves by ball support, sealing mechanism, operating torque, pressure capability, valve size, cost, and application. Floating ball valves provide a simpler and more economical solution for small- to medium-size, low- and medium-pressure pipelines, while fixed ball valves offer lower torque and greater sealing stability for large-diameter, high-pressure oil, gas, power, and process systems.