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Section 3 • Installation
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Stop/Check Valve Installation
1
The new design will apply only to the 2” thru 4” stop
valves. Retrofitting a field installation will require replac
-
ing the bonnet assembly.
The bonnet must be installed with the spring towards
the bottom, see Figure. The drill fixture is designed so
that the hole for the spring will always be drilled on the
opposite side from the cast-in Vilter name on the bon
-
net. From the outside of the valve, the casting numbers
must always be towards the top of the valve.
1
For VSM-97, VSM-113 and VSM-127 this is just
a Stop Valve
Correct
Wrong
Wrong
Correct
Verify the location of the
Spring and note the Vilter
TM
name.
For Stop/Check Valve Operation, refer to Section 4.
Figure 3-9. Stop/Check Valve Orientation
Summary of Contents for Vilter VSH
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