Boiler house

TDS blowdown controls

BCV selection guide

DN15

BCV

4

3

H

W

S

U

S

S

Kvs 0.5

Flanged ASME 300

PN

Valve size

Valve series

Body material

Connections

Stem sealing

Seating

Type of trim

Trim-balancing

Bonnet type

Bolting

Flow coefficient

Connection type

Actuation

Selection example

4 =

6 =

7 =

8 =

1 =

2 =

3 =

4 =

H =

W =

S =

U =

S =

S =

PN =

EL =

DN15, DN20, DN25, DN32, DN40 and DN50

1⁄2", 3⁄4", 1", 11⁄4", 11⁄2" and 2"

BCV

Carbon steel

Stainless steel

SGiron

Alloy steel

Screwed

- Not available for the BCV8_

Socket weld - Not available for the BCV7_

Flanged

Butt weld

- Not available for the BCV7_

Graphite

Stainless Steel 316L with Stellite

Standard trim

Unbalanced

Standard

Standard

To be specified

To be specified

Pneumatic

Electrical

230 Vac,

110 Vac or

24 Vac

BCV

4

3

H

W

S

U

S S

Flanged ASME 300

PN

-

-

-

How to order

Example: 1 off Spirax Sarco DN15 BCV43 pneumatically actuated control valve having flanged ASME 300 connections.

DN15

TI-P403-102 AB Issue 4

Page 13 of 14

BCV Blowdown Control Valves DN15 to DN50 (1⁄2" to 2")

Kvs 0.5

2.4.18