Boiler house Bottom blowdown systems
2
BBV selection guide:
Valve series
BBV
BBV = Boiler blowdown valve
4 = Carbon steel
Body material
4
6 = Stainless steel
1 = Screwed
Connections
3
3 = Flanged
P = PTFE
Stem sealing
P
H = Graphite
2.11 11
Seating
W
W = Stellite
Type of trim
S
S = Standard trim
Trim balancing
U
U = Unbalanced
Bonnet type
S
S = Standard
Bolting
S
S = Standard
= DN15, DN20, DN25, DN32, DN40 and DN50 ½", ¾", 1", 1¼", 1½" and 2"
Valve size
DN20
EN standard = Flanged EN 1092 PN40
Connections For alternative
PN40
connections to those stated please contact Spirax Sarco.
ASME standard = Flanged ASME 150 and ASME 300
PN/M = Air pneumatically actuated supplied with a manual actuation lever
Version
PN/M
M = Manually actuated complete with a manual actuation lever
Selection example:
BBV 4
3
P
W S
U S
S DN20 PN40 PN/M
How to order example: 1 off Spirax Sarco BBV43PWSUSS DN20 PN/M
TI-P405-51 EMM Issue 6
Page 11 of 11
BBV Automatic or Manually Actuated Boiler Blowdown Valves DN15 to DN50
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