Product Handbook 2026 - Volume 1

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 2019

TI-P403-60 EMM Issue 6

BCV1 and BCV20 Blowdown Valves

Description The BCV1 and BCV20 valves are small bore, normally closed valves with a brass body and corrosion resistant internal components. They are primarily intended for low and medium pressure boiler blowdown applications. BCV1 and BCV20 valves are identical apart from the orifice size, the BCV1 having a 3 mm ( 1/8 ") orifice and the BCV20 a 6 mm ( ¼ ") orifice. Valves are supplied complete with a mains connector, which is protected to IP65 and is suitable for 3 x 1 mm ² (18 AWG) cable. Available sizes and pipe connections

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½ " screwed BSP - 230 V version ½ " screwed BSP - 110 V version ½ " screwed NPT - 120 V version Electrical data 230 V version

207 V to 253 V

110 V version

99 V to 121 V

120 V version

108 V to 132 V

Frequency

50 - 60 Hz

40 VA (inrush) 16 VA/12 W (hold)

Maximum power consumption

Protection rating

IP65 (Nema 4)

Materials Body

Brass

Soft seal

PTFE

Internal components

Stainless steel

Limiting conditions Blowdown valves

BCV1

BCV20

Maximum boiler or steam pressure - Intermittent operation

14 bar g

203 psi g

4 bar g

58 psi g

Medium temperature range

- 40 to +200 °C - 40 to +392 °F - 40 to +180 °C - 40 to +356 °F

Maximum ambient temperature

55 °C

130 °F

55 °C

130 °F

Medium

Water and steam

Water and steam

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