Ball Valves

Ball valves shut off flow with a quarter turn. That simplicity is the reason they outnumber every other valve type on a typical process plant—quick actuation, bidirectional sealing, and a wide-open bore that lets media pass with near-zero resistance when the valve is open. FLOWKS manufactures floating and trunnion-mounted configurations across 2" through 48" sizes, with cast and forged body options, top-entry access for welded-line maintenance, V-port trim for modulating duty, and multi-port designs for flow switching. The floating design relies on line pressure to push the ball against the downstream seat—self-reinforcing at higher pressures, economical at smaller sizes. Trunnion-mounted designs anchor the ball mechanically and let the seats move toward it—necessary above 8" where floating geometry can't maintain uniform seat loading, and essential for high-pressure Class 900–2500 service where the operating force would overwhelm a floating ball. Seat material selection—PTFE, Nylon, Delrin, PCTFE, reinforced PEEK—determines temperature limits and chemical compatibility. Metal-seated configurations handle abrasive, high-temperature, and cryogenic conditions where soft seats fail. Whether you need a compact 2" floating valve for a utility line or a 48" trunnion unit for a buried pipeline, the ball valve's quarter-turn simplicity scales across every size and pressure class in industrial service.

FLOWKS ball valves cover the full industrial range—from 2" floating designs for utility and process isolation up through 48" trunnion-mounted units for high-pressure pipeline service. Floating ball valves (2"–8", Class 150–600) use line pressure to seat the ball against the downstream seat, delivering self-reinforcing shutoff at operating pressure. Trunnion-mounted ball valves (2"–48", Class 150–2500) anchor the ball with upper and lower stems, allowing spring-loaded or floating seats to seal against the ball—uniform contact pressure at every size, every pressure class. Cast steel bodies offer cost efficiency and smoother internal flow contours for viscous and slurry service. Forged steel bodies deliver higher structural integrity for demanding pressure containment. Top-entry designs enable in-line maintenance on buried and welded pipelines without removing the valve from the line. V-port ball valves combine shutoff with modulating control through characterised V-shaped ball openings. Multi-port configurations redirect flow between multiple process lines with a single valve body. Soft seat materials (PTFE, Nylon, Delrin, PCTFE, PEEK) cover general through high-performance chemical service. Metal seats handle abrasive, high-temperature, and cryogenic conditions. FLOWKS ball valves meet API 6D, API 608, and ASME B16.34 standards, with ISO 15848 low-emission certification available on trunnion and top-entry models.