Bottom Blowdown Systems

The Spirax Sarco bottom blowdown system catalog includes BBV boiler bottom blowdown valves, with nominal sizes from DN15 to DN65. For actuation and design, the BBV series offers manual operation and automatic timed control options to meet different system control requirements. When selecting a valve, users should focus primarily on matching the system pipe size with the required level of valve control automation.

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Spirax Sarco ABV21i/ABV40i Pneumatic Boiler Blowdown Ball Valves

Pneumatic boiler bottom blowdown ball valves with PN40 and Class 300 flange connections.

Spirax Sarco BDV60 Boiler Blowdown Vessel

Boiler blowdown vessel for bottom blowdown, TDS control, and heat recovery, with PN16 flange connections.

Spirax Sarco BT1050 Boiler Bottom Blowdown Controller

Timed boiler bottom blowdown controller supporting three independent timers and multi-boiler coordination.

Spirax Sarco KBV21i/KBV40i Key-Operated Boiler Blowdown Ball Valves

Carbon steel flanged key-operated boiler blowdown ball valves; KBV21i (KBV21) is suitable for PN40, while KBV40i (KBV40) is suitable for high-pressure Class 300 systems. The operating key cannot be removed when the valve is open.