Flowserve V-376 R4 Edward Valves - Manual (Page 4)

5
Flow Control Division
Edward V
alves
Introduction
This manual is provided to help you ser
vice your Edward Forged Steel valves. Before disassembling any valve, we recom- mend that you check the valve identifica- tion plate and note size, figure number and pressure class, so that you can identify it in the appropriate Edward V
alve catalog.
This catalog will show typical cross sec- tions to help identify the various par
ts.
Typical Identification Plates
Tools Most Edward Forged Steel valves may be readily disassembled with ordinar
y hand
tools. For the removal of screwed-in valve seats, a special wrench may be necessar
y.
Disassembly Be sure line is not under pressure when dis- assembling valves
Bolted Bonnet In bolted bonnet/cover style valves, cap screws should be removed (see page 3 and below). The bonnet assembly or cover can then be removed and the interior of the valve exposed.
Fig. 238
Bolted Cover Strainer
Screwed Bonnet Small valves of the screwed bonnet type are disassembled by unscrewing the bonnet.
Screwed Bonnet Construction