Flowserve Vogt Forged Steel Gate - Manual (Page 17)

Flow Control
Vogt Valves
FCD VVENIM2000-02 Forged Steel Gate, Globe and Check Valves 17
4.1 Introduction (1)
A most critical point in time in the life of an industrial valve is instal-
lation. The possibilities for degradation of the valve are numerous.
Conversely, the exercise of proper care in this process will assure
increased probability of trouble-free valve service.
This Section has been prepared in order to provide useful informa-
tion, warnings and reminders, in a format that will be helpful to all
concerned. A judicious selection of these pages, delivered to the
installation site with the valve itself, will provide the opportunity
for the person having the greatest need to know to be informed or
reminded of what is most important at the time such information can
be the most useful.
(1) Paragraph extracted from MSS SP 92.
4.2 Inspection
Prior to installation, the following inspections are recommended:
• Valve(s) and nameplates should be checked for proper
identification to be sure the valve is the proper type and of a
suitable pressure class.
• Check the handwheel jamb nut to ensure that it is tight. After
installation, periodically check the nut to ensure tightness.
• Actuate the valve full-open to full-closed to check for possible
damage from shipping and handling.
• It is extremely important to inspect the interior of both the valve
and the adjoining pipe for cleanliness, because foreign material in
the line is the major cause of seat leakage and seat damage.
• Make a point of noting any special warning tags or plates attached
to or accompanying the valve and take any appropriate action.
• Verify any marking indicating flow direction. Make sure that
the valve is installed in the proper flow orientation when a flow
direction is indicated on the valve.
4
Installation