Control valves

Spirax Sarco control valves are modular valve assemblies for steam and other industrial fluids, giving engineers a practical way to match body style, trim characteristic, actuator and positioner selection to the actual duty. Two-port and three-port control valves support temperature, pressure, flow, level, differential pressure and humidification duties across steam, water, oils and other process services, so the page serves both steam control valve intent and wider industrial control valve selection intent. The SPIRA-TROL platform is designed around configurable trim, including low-noise, anti-cavitation, balanced plug, reduced-flow and multi-stage options where standard trim is not enough for the pressure drop, fluid condition or controllability target. Clamp-in-place trim construction helps reduce maintenance complexity and spares burden, which is valuable on plants that want one adaptable control valve family instead of unrelated valves for each application. Pneumatic packages with smart positioners remain a strong fit where instrument air, fast response and proven diaphragm or piston actuation are preferred, while electric actuation provides an alternative where lower utility demand, easier commissioning or simpler electrical integration matters more. The wider Spirax Sarco range also covers clean-service and specialist valve duties, making this route a useful starting point when a project needs a complete control valve package rather than a bare valve body alone.