Product Handbook 2026 - Volume 1

Boiler house Blowdown vessels

2

Dimensions/weights (approximate) in mm (in) and kg (lb) (continued)

Standard key

'T' bar key

E

E

D

C

B

D

F

2.9 13

A

Valve size

Flange

A

B

C

D

E

F

Weight

150 (5.5) 216 (8.5) 216 (8.5) 170 (6.7) 241 (9.5) 241 (9.5)

139 (5.4) 139 (5.4) 139 (5.4) 140 (5.5) 140 (5.5) 140 (5.5)

35 (1.4) 35 (1.4) 35 (1.4) 35 (1.4) 35 (1.4) 35 (1.4)

37 (1.5) 37 (1.5) 37 (1.5) 50 (1.9) 50 (1.9) 50 (1.9)

9.0 (19.8) 9.9 (21.8) 10.1 (22.3) 12.4 (27.3) 13.9 (30.6) 15.0 (33.1)

PN40 (F4)

DN50 (2")

PN40 BS

Class 300

PN40 (F4)

DN65 (2½")

PN40 BS

Class 300

32 (1.3)

258 (10.2) 375 (14.8)

0.4 (0.9)

Standard length key

500 (19.7)

0.9 (2)

Extended length 'T' bar key

TI-P405-47 EMM Issue 3

Page 5 of 7

KBV21i and KBV40i Key Operated Boiler Blowdown Valve

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