Milwaukee Valve 17603 BA-300 3/4 in. Cast Bronze Full Port Threaded 600# Ball Valve Installation Manual

MILWAUKEE VALVE
INSTALLATION OPERATION & MAINTENANCE MANUAL
BA300/350 SERIES THREE-PIECE BALL VALVES
Installation
1. Threaded End: Use standard piping practices to
install valves with threaded ends. When tightening
valve to pipe, apply wrench to end cap nearest
the pipe being worked.
2. Weld / Solder / Sil brazed End: All standard
weld/solder end valves must be partially
disassembled prior to welding. Follow steps 1, 2,
4 and 5 of “Disassembly”. Socket weld wends are
per ANSI B16.11. Solder ends are per ANSI
B16.18. Welding should be done using
procedures and welders qualified under Section
IX of ASME Boiler and Pressure Vessel Code.
CAUTION: If the body seats are removed for
welding, do not mix them. When reassembling the
valve, put each seat back into the groove from
which it was removed. CARE SHALL BE
TAKENNOT TO SCRATCH SEATS OR SEALING
SURFACES.
Maintenance
Routine maintenance may consist of tightening the gland
nut % turn periodically to compensate for the wear
caused by the stem turning against the packing. When
tightening packing on the actuated valves where the
valve is connected to the actuator with a no-play
(clamped) coupling, loosen the coupling before tightening
in the gland nut. Retighten the coupling. Overhaul
maintenance consists of replacing seats and seals.
Disassembly
These ball valves are designed to be serviced in or out of
the line. These instructions are for in-line disassembly.
(For bench disassembly, which may be more convenient,
follow a similar sequence. )
1. Comply fully with the above CAUTIONS.
2. Cycle the valve. Leave in the open position. This
is to prevent the ball from rolling out or damage.
The body section will not swing out in the closed
position.
3. Remove the top handle nut, washer and handle.
4, Loosen all four body bolts. Remove from the
valve.
5. Spread end caps and remove the body and the o-
rings from the line. Be careful not to damage the
o-ring and sealing surfaces.
6. Remove seats from the seat pockets located in
end caps. Use extreme care when prying them
out. Damage such as scratches to the bottom of
the groove will cause leaks.
7. Turn the stem so that the valve is fully closed.
Remove the ball.
8. Remove the gland nut.
9. Press the stem from the top into the valve body
and remove it through the end of the body.
Remove thrust water.
10. Carefully pry out and discard the old packing; be
careful not damage the sealing surfaces.
Assembly
The following instructions are for in-line assembly. For
bench assembly, which may be easier, follow a similar
sequence by holding the valve in a vise by one end of the
cap. Do not use excessive clamping force. Care shall be
taken not to damage end connections. Use care not to
cut or scratch the seats or sealing surfaces.
1. Place thrust washer over threaded portion of the
stem. Insert the stem through the valve body into
the packing box. Guide the stem into the stem
hole being careful not to scratch the packing
chamber. Hold the stem in place and insert
packing from the top of the valve over the
threaded portion of the stem. Install gland nut
over packing and hand tighten.
2. Align the stem blade with the ball slot. Insert the
ball, and rotate the stem to the open position.
3. Working at either end, place o-rings into o-ring
grooves located in end caps.
4. Working at either end, place a seat into seat
pockets located in the end caps. Make sure the
sealing surface of the seat is facing the ball.
Repeat for opposite end.
5. Place the entire body assembly back into the
properly aligned and interlocked position between
the end caps, being careful not to scratch the
seats.
6. Valve must be in a closed position during
assembly and bolt tightening.
7. Bolt the valve together with body bolts and nuts.
Tighten these bolts evenly and alternately to
specified torque. Cycle the valve using a crescent
wrench to center the seats in their pockets.
8. Tighten gland nut to specified torque.
9. Attach the handle and secure it with the washer
and handle nut.
10. Check bolt torques 24 hours after initial assembly
to compensate for cold flow of Teflon seats.