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VALVES
Blowdown Valves
Blowdown Valves Gestra
Precision Boiler Control for steam, air and water — direct-acting and pilot-operated designs from low to high pressure. Available from Spirax Sarco, Gestra and Valsteam ADCA for all industrial applications.
GESTRA
Blowdown Valves
Automatic and intermittent blowdown valves for efficient boiler water management.
Blowdown Valves
Maximize your boiler's efficiency and operational lifespan with GESTRA’s high-performance blowdown valves, engineered for the precise control of Total Dissolved Solids (TDS) and reliable bottom sludge removal. Whether you require rapid-action intermittent valves to clear abrasive sediment or continuous blowdown systems to automate strict water quality standards,
PA 46, PA 47, PA 48 / MPA 46, 47, 48
PA 46, PA 47, PA 48 / MPA 46, 47, 48
GESTRA
Product Type: Rapid-Action Intermittent Bottom Blowdown Valves (PA & MPA Series) Rating: PN 40 to PN 100 / CLASS 150 to CLASS 600 Size / Connection: DN 20, 25, 32, 40, 50 (Flanged, Butt-weld, Socket-weld) Best for: Forceful removal of accumulated sludge and sediment across standard to very high-pressure steam boilers. Key Features:
Pressure ratings spanning PN 40 to PN 100 (CLASS 150 to 600)
Specialized rapid-action mechanism generates a high-velocity purging “shock”
PA models feature a manual lever for swift operator actuation
MPA models feature robust pneumatic actuators for automated boiler control integration
PA 110 / MPA 110
PA 110 / MPA 110
GESTRA
Product Type: Rapid-Action Intermittent Bottom Blowdown Valves Rating: PN 160, 250 / CLASS 600, 900, 1500 Size / Connection: DN 25 (Flanged, Butt-weld, Socket-weld) Best for: Forceful removal of accumulated sludge and sediment in ultra-high-pressure utility and power generation steam boilers. Key Features:
Ultra-high-pressure ratings (PN 160 / 250, CLASS 600 / 900 / 1500)
Compact DN 25 body engineered specifically for severe service and power applications
Specialized rapid-action mechanism generates a high-velocity purging “shock”
PA 110 features a manual lever for swift operator actuation
MPA 110 features a robust pneumatic actuator for automated boiler control integration
BA 28, 29, 210 BA 211
BA 28, 29, 210 BA 211
GESTRA
Product Type: Continuous Blowdown Valves (Reaktomat – BA & BAE Series) Rating: PN 63 to PN 320 / CLASS 600 to CLASS 2500 Size / Connection: DN 25 / 1″ (Butt-weld ends standard, Flanged optional) Best for: Continuous and precise control of Total Dissolved Solids (TDS) in high to ultra-high-pressure steam generation systems. Key Features:
Extreme pressure and temperature capabilities, ranging from PN 63 (BA 28) up to PN 320 at 530°C (BA 211)
Multi-stage radial expansion nozzle prevents wear and wire-drawing under severe pressure drops
BA models feature manual operation with a precise flow adjustment scale
BAE models are equipped with electric actuators for automated conductivity control integration
Constructed from high-grade forged steels, with the BA 211 utilizing specialized alloy steel for temperatures up to 530°C
BA 46, 47 / BAE 46, 47
BA 46, 47 / BAE 46, 47
GESTRA
Product Type: Continuous Blowdown Valves (Reaktomat – BA & BAE Series) Rating: PN 40, PN 63 / CLASS 150, 300, 600 Size / Connection: DN 15 to DN 50 (Flanged, Butt-weld, Socket-weld) Best for: Continuous, precise control of Total Dissolved Solids (TDS) in standard to high-pressure steam generation systems. Key Features:
Pressure ratings covering PN 40 (46 series) and PN 63 (47 series)
Wear-resistant, multi-stage radial expansion nozzle prevents wire-drawing and erosion
BA models feature manual operation with a precise flow adjustment scale
BAE models are equipped with electric actuators for seamless integration into automated boiler conductivity controls
Comes standard with an integrated sampling valve for safe and easy boiler water analysis
