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IOM-F150-F300-2014
BODY BOLT TORQUES (in-lb)
VISUAL INSPECTION
ASSEMBLY
Clean and inspect metal parts. It is not necessary to replace the ball and stem unless the seating surfaces have been damaged by
abrasion or corrosion. We strongly recommend replacement of all soft parts whenever the valve is disassembled for recondition-
ing. This is the surest protection against subsequent leakage after valve assembly. The replacement parts can be ordered in kit form.
NOTE: the valve may be assembled and operated dry where no lubricants are allowed in the system; however, a light lubricant or
mating parts will aid in assembly and reduce initial opening torque. Lubricant used must be compatible with the
intended line fl uid.
Install one seat in the body cavity with the spherical curvature facing the ball.
Install thrust washer on stem and slide the stem up through the body.
Install packing and packing gland with packing gland bolts. Install stop plate, handle and handle retainer nut.
Turn the handle to the CLOSED position. Line up the ball slot with stem tang and slide the ball into position.
Turn the handle to the OPEN position to hold the ball in place. Install the remaining seat into body side.
Put body seal gasket into shoulder counter-bore at fl ange in valve body.
Put body end back into body and line up end fl ange.
Because the body fl ange bolt pattern is different from the line fl ange bolt pattern, it is possible to assemble the valve such that the
bolt holes in the line fl anges don’t line up. Be certain to align end fl anges bolt holes to straddle valve center lines.
NOTE: be careful not to damage body seal when putting body end into body. Install body end nuts and tighten in a “star” pattern
to the torque specifi ed below.
WARNING: extreme care must be exercised during adjustment of body end nuts to make sure that complete engagement of studs
with body fl ange is maintained. There should be at least one stud thread exposed on each side. Cycle the valve slowly, with a
gentle back and forth motion to build gradually to a full quarter turn. By cycling slowly, the seat lips will assume a permanent
seal shape against the ball. A fast turning motion, at this point, may cut the seats before they have a chance to form the proper
seal. Test valve, if possible, prior to placing valve back into line position.
WARNING: if not properly secured, the valve can separate from the pressure source, resulting in possible injury. Always join the
valve to companion fl anges of same pressure rating as valve and secure with a full set of fl ange bolts.
DISASSEMBLY FOR SEAL & PACKING
Stem seal leakage may be corrected without disassembly. Tighten the packing gland nuts until leakage stops. If leakage contin-
ues or valve’s operating torque becomes excessive, the seals are worn and replacement will be necessary. WARNING: do not
remove packing gland while line is under pressure! Begin with the valve partially open in a depressurized line.
Remove the fl ange bolts and nuts and lift valve from line for servicing. NOTE: care should be taken to avoid scratching or
damaging serrated gasket. These valves can be heavy depending on what size you are repairing. They should be adequately
supported before removal from the line has begun.
Loosen handle set screw and remove handle and stop plate. Next, remove gland nuts, gland fl ange and gland.
Remove body end nuts, using proper wrench size. Lift off body end. One seat should come out with body end.
Remove body seal.
To take out the ball, rotate stem so ball is in fully closed position. Lift ball from body, using a strap and lift device, if neces-
sary. NOTE: extreme caution should be taken to avoid damage to the ball.
Take out the other seat.
Stem must be removed from inside the body. (tap on the top of stem with rubber coated tool should loosen it. The thrust
washer should come out with the stem. Then remove the stem packing.)
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2.
3.
4.
5.
6.
7.
Size
1/2”
3/4”
1”
1 1/4” 1 1/2”
2”
2 1/2”
3”
4”
6”
8”
10”
12”
F150
148
148
243
243
547
547
547
547
547
1042 1042 1563 1563
F300
148
148
243
243
547
547
547
1042 1042 1042 1563 2561 3472
