Bray Multi-Port Series - Manual (Page 2)

Installation and Maintenance Manual
Multiport Threaded and Weld End Ball Valves
Date: May 2011 / Page 2 of 3
®
A Subsidiary of BRAY INTERNATIONAL, Inc.
FLOW-TEK, Inc. Tel: 832.912.2300 © 2011 Flow-Tek, Inc.
8323 N. Eldridge Pkwy #100 Fax: 832.912.2301
Houston, Texas 77041 www.flow-tek.com
DISASSEMBLY AND CLEANING PROCEDURES:
Caution: Ball Valves can trap fluids in ball cavity
1. If the valve has been used to control hazardous me-
dia, it must be decontaminated before disassembly.
It is recommended that the following steps be taken
for safe removal and reassemble.
a. Relieve the line pressures.
b. Place the valve in all the available flow position
and flush the line to remove any hazardous
material from valve.
c. All persons involved in the removal and disas-
sembly of the valve should wear proper protec-
tive clothing, such as face shield, glove, and
apron, etc.
2. If valve is installed in the line, pipelines may have
to be cut to disassemble the valve. Inline weld
type valve can be disassembled without cutting
the pipelines.
PROCEDURES TO REPLACE REPAIR KIT:
1. Follow the direction on disassembly and cleaning
procedures.
2. Loosen each of body bolts (#19) and remove each
of end caps (#2) including the blank end cap (#22)
from the body (#1).
3. The seats (#4) are located inside end cap cavities.
Replace the seats (#4) and gaskets (#5) with new
ones. Place the end caps in a safe place.
4. To replace the stem components, the handle nut
(#18) must be loosen. To assist in loosening of the
handle nut, place a rod of diameter smaller than
the ball orifice into the ball orifice. Loosen and
remove the handle nut. Remove the handle (#16),
stop plate (#15), space washer (#14), and lock
saddle (#13). Larger valves size 2½” - 4”
only have handle T-Bar (not shown in the assembly
diagram).
5. Loosen and remove the stem nut (#12), belleville
washer (#11), and gland. Larger valves size
2½” - 4” have gland, belleville washer, and
gland washer (not shown in the assembly diagram).
6. Remove the rod and the ball should slight out from
the center of ball valve body with a gentle push
(for ¼” - 2). For larger size valve 2½” - 4”,
remove the bonnet cap and the trunion ball can be
removed from the top of the valve body (not shown
in the assembly diagram). Clean all the removed
parts and place them in a safe place.
7. For valves ¼” - 2” size, push the stem (#6)
downward. It should come out through the center
body cavity. Remove the stem packing (#9), o-ring
(#8), and thrust washer (#7). Clean the stem and
replace with new stem packing, o-ring, and thrust
washer. For larger size ball valve 2½” - 2”,
replace with new o-ring, stem packing and bonnet
gasket (not shown in the assembly diagram).
8. Replace the stem (#6), gland (#10), belleville
washers (#11) and the stem nut. For larger
size valve 2½” - 4”, replace the trunion ball
and the bonnet cap
9. Tighten the stem nut according to the stem nut
torque chart on next page. For larger size
valve 2½” - 4”, tighten the circular gland until
it bottoms out.
10. Replace the lock saddle (#13), space washer
(#14), stop plate (#15), handle (#16), and handle
nut (#18). For larger size valve 2½” - 4”,
replace the handle t-bar and the lever (not shown
in the assembly diagram).
11. Replace the end caps and tighten the body bolts
evenly according to the body bolt torque chart on
next page. For large size valve 2½” - 4”,
also tighten the bonnet cap according to the body
bolt torque chart.
12. Check the valve for proper operation.