Cameron WKM MA - End-of-Line Service; Disc;Pipe Clearance

5
Installation, Operation and Maintenance Manual
D I S T R I B U T E D V A L V E S
Threaded style lug valves are recommended
for end-of-line or equipment isolation service.
The WKM MA High Performance
Butterfly Valve can handle flow from either
direction in end-of-line service.
To prevent unintentional removal of the seat
retainer with pressure on the valve, it is
recommended that the valve be installed with
the seat retainer against the upstream flange
if possible.
DynaCentric
Disc/Pipe Clearance
Seat Retainer
Valve Size Schd Schd Schd Diameter
and Class 40 XS 120 (in.)
(extra
strong)
3" - 150 X X X 2.75
3" - 300 X X X 2.75
3" - 600 X X X 2.75
4" - 150 X X 3.85
4" - 300 X X 3.85
4" - 600 X X X 3.65
6" - 150 X X 5.90
6" - 300 X X 5.90
6" - 600 X X X 5.50
8" - 150 X 7.90
8" - 300 X X 7.90
8" - 600 X X X 7.40
10" - 150 X 10.00
10" - 300 X X 9.80
10" - 600 X X X 9.06
12" - 150 X 11.90
12" - 300 X X 11.75
12" - 600 X X X 11.75
14" - 150 X 13.06
14" - 300 X X 13.00
16" - 150 X 15.00
16" - 300 X X 14.68
18" - 150 X 16.87
18" - 300 X X 16.50
20" - 150 X 18.81
24" - 150 X 22.62
24" - 300 X X 22.06
30" - 150 X X X 28.02
Table 1 - Disc Clearance
Before beginning installation, note the following:
Disc/pipe clearance should be checked before
beginning installation to avoid the possibility of
scraping on the disc edge on the pipe I.D. and
damaging the sealing surface.
Minimum pipe I.D. required for disc swing clearance:
Class 150 valves - Schedule 40 pipe or equivalent
Class 300 valves - Schedule XS pipe or equivalent
Class 600 valves - Schedule 120 pipe or equivalent
Consult Table 1 for required flange modifications for
other pipe schedules.
Figure 7 - Disc / Pipe Clearance
ØD
30°
Minimum Disc/Pipe
Swing Clearance
X
WKM-MA-HPBV-IOM
End-of-Line Service