
Spirax Sarco ABV21i/ABV40i Pneumatic Boiler Blowdown Ball Valves
Pneumatic boiler bottom blowdown ball valves with PN40 and Class 300 flange connections.

This range includes various Spirax Sarco bimetallic steam traps for medium- and high-pressure, carbon steel, high-capacity, and sealed applications, with installation options including flanged connections or pipeline connectors. The products use bimetallic elements that respond to temperature changes to discharge subcooled condensate and are commonly used in steam tracing lines, main drainage lines, and similar systems. Selection should focus on operating pressure, temperature, required capacity, and whether in-line maintenance or a maintainable design is required to ensure energy-efficient and stable steam system operation.
