Flowserve Factory Mutual Approved Oil or Gas Safety Shutoff Valve - Manual (Page 6)

6 Factory Mutual Approved Oil or Gas Safety Shutoff Valves WCAIM2054
When only one washer is used, it goes inside recess on
top of the body and under the stem seals.
b. Lightly lubricate the ball, seats, body seal, stem seals and
thrust bearing with a lubricant compatible with media
being handled. White petroleum jelly is a good general-
purpose lubricant.
c. When stem assembly is complete, retaining nut should be
tightened to fully compress packing, then backed off Z|n
turn. Excessive tightening causes higher torque and
shorter seal life.
d. Insert seat in body. Make sure seat rests firmly on back
surface of recess.
e. With stem in “closed” position, insert ball into body so
that stem slot engages “tang” on stem. Place body seal
into body so it rests squarely on the body seal surface.
f. Insert seat in cavity of end plug. Assemble end plug into
body and secure with end plug retaining screws. Proper
installation will allow no more than .010" protrusion of the
end plug beyond the valve body.
g. Upon reinstallation of the valve in the line, retighten the
end plug retaining screws after the flange bolts are fully
torqued.
If practical, pressurize valve to check for leakage.
Flow Control Division
Worcester Controls
1 /
4
"–2" 44 and 1 /
4
"–1 1 /
2
" 59
(1 1 /
2
" and 2" Size 44 Valves Shown)
2" 51/52