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Flo-Tite, Inc.
Valves & Controls
Installation, Operation, & Maintenance
F150 & F300 2-Piece Ball Valves
DESIGN
Split body, two-piece construction, allows ease in maintenance of valve ball and seat, without special tools.
This line of valves utilizes the “free oating” ball principle. The ball is not xed, but is free to move with
the line pressure. As a result, these valves are capable of tight shut-off with the ow in either direction or
dead-ended, regardless of the position of the valve in the line. The downstream seat, which is opposite
the pressurized side of closed valve must carry the load exerted by the line pressure on the ball, while the
upstream seat is subject to little load or wear. For this reason, it is sometimes possible to increase useful
seat life by turning the valve end-for-end in the pipeline.
USE
Maximum results and long life of valves can be maintained under normal working conditions and in
accordance with pressure/temperature date chart.
MANUAL OPERATIONS
The opening and closing of the valve is done by turning the handle a ¼ turn (90 degrees)
The valve in open position: the handle is in-line with the valve or pipeline.
The valve in closed position: the handle is across or perpendicular to pipeline.
AUTOMATED OPERATION
Valves with actuators should be checked for actuator-valve alignment. Angular or linear misalignment will
result in high operational torque.
GENERAL INFORMATION FOR ON-SITE INSTALLATION
The valve may be tted in any position on the pipeline. Before installing the valve, the pipe should be
clean of dirt, burrs and welding residues, or you will damage the seats and ball surface.
DISASSEMBLY & CLEANING PROCEDURES
If the valve has been used to control hazardous media, it must be decontaminated before disassembly. It is
recommended that the following steps are taken for safe removal and reassembly.
1. Remove the line pressure
2. Place the valve in half-open position and ush the line to remove any hazardous material from valve.
3. All persons involved in the removal and disassembly of the valve should wear the proper protective
clothing, such as face shield, gloves, apron, etc.
As shipped from the factory, valves contain a silicone based lubricant. This is for break-in and may be
removed, if it is objectionable for a particular application, by disassembling and solvent washing.
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Flo-Tite, Inc.
Valves & Controls
Installation, Operation, & Maintenance
F150 & F300 2-Piece Ball Valves
DISASSEMBLY FOR SEAL & PACKING
Stem seal leakage may be corrected without disassembly. Tighten the packing gland nuts until leakage
stops. If leakage continues or valve’s operating torque becomes excessive, the seals are worn and replace-
ment will be necessary. WARNING: do not remove packing gland while line is under pressure! Begin
with the valve partially open in a depressurized line.
1. Remove the 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.
2. Loosen handle set screw and remove handle and stop plate. Next, remove gland nuts, gland ange and
gland.
3. Remove body end nuts, using proper wrench size. Lift off body end. One seat should come out with
body end.
4. Remove body seal.
5. 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 necessary. NOTE: extreme caution should be taken to avoid damage to the ball.
6. Take out the other seat.
7. 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.)
VISUAL INSPECTION
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 when-
ever the valve is disassembled for reconditioning. 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 assem-
bled 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 uid.
ASSEMBLY
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 ange
in valve body. Put body end back into body and line up end ange. Because the body ange bolt pattern is
different from the line ange bolt pattern, it is possible to assemble the valve such that the bolt holes in the
line anges don’t line up. Be certain to align end 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 specied below. WARNING: extreme care must be exercised during adjustment
of body end nuts to make sure that complete engagement of studs with body 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 perma-
nent 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.
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Flo-Tite, Inc.
Valves & Controls
Installation, Operation, & Maintenance
F150 & F300 2-Piece Ball Valves
ASSEMBLY continued...
WARNING: if not properly secured, the valve can separate from the pressure source, resulting in possible
injury. Always join the valve to companion anges of same pressure rating as valve and secure with a full
set of ange bolts.
WRENCH SIZE AND BOLT TORQUES
½” – 12mm wrench / 188 In Lbs
¾” – 12mm wrench / 188 In Lbs
1” – 14mm wrench / 290 In Lbs
1 ½” – 19mm wrench / 290 In Lbs
2” – 19mm wrench / 385 In Lbs
2 ½” – 7/8” wrench / 500 In Lbs
3” – 7/8” wrench / 500 In Lbs
4” – 7/8” wrench / 500 In Lbs
6” – 1 1/16” wrench / 1050 In Lbs
8” – 1 1/16” wrench / 1050 In Lbs
10” – 15/16” wrench / on application
12” – 15/16” wrench / on application
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