Boiler house TDS blowdown controls
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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2025
TI-P403-102 EMM Issue 9
BCV Blowdown Control Valves DN15 to DN50 (½" to 2")
Description Spirax Sarco's BCV blowdown control valves are manufactured using the market proven Spira-trol TM body. These valves are designed for the blowdown of steam boilers or for other high pressure drop, low flow applications, and are generally used with a blowdown controller as part of an automatic BCV control system.
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The flowrate is adjusted by setting the stroke of the valve spindle. These valves have been specially designed to minimize seat erosion and ensure consistent tight shut-off. A ¼" BSP plug at the base of the valve may be removed to allow a sample cooler to be fitted. Two versions are available: - Electrically actuated BCV blowdown control valve. - Pneumatically actuated BCV blowdown control valve. Available models:
Electrically actuated
Connections Screwed Socket weld Flanged
Material
BCV41
BCV42
BCV43
Carbon steel
BCV61 BCV71
BCV62
BCV63 BCV73
Stainless steel
SG iron
Spira-trol TM valve body options: Stem sealing Graphite packing
High temperature applications
Hard facing
316L stainless steel with Stellite 6 facing
Seating
BCV blowdown control valves are compatible with the following actuators: Version Actuator Electric AEL3 series Pneumatic PN9_ _ _ series
Pneumatically actuated
Operation BCV blowdown control valves are supplied loaded to the closed position. Electrical version: When the power is connected to the actuator the valve opens to the position set by the internal limit switch. Pneumatic version: When the solenoid valve opens, air is admitted to the actuator activating the valve to open to the selected stroke.
TI-P403-102 EMM Issue 9
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BCV Blowdown Control Valves DN15 to DN50 (½" to 2")
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