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BZ9 Series Ball Valves
IOM-BZ9
TABLE A: TORQUE REQUIREMENTS (
in-lbs)
Series BZ9
Valve Size
1/2”
3/4”
1”
1-1/2”
2”
4
4
4
4
4
48
53
95
106
106
REPAIR KITS
Repair Kits are available from SVF Flow Controls,
Inc. Table B below shows what the kits consist
of. When ordering a Repair Kit, please be sure
to specify the type, size and seating material of
the valve.
When repairing a valve use only SVF Flow Controls,
Inc. authorized spare parts including; bolts and
nuts, etc. In addition to maintenance kits, spare
parts are available from SVF Flow Controls, Inc.
They are: balls, stems and glands. If additional
parts are required (body and ends) it is normally
recommended that the complete valve be
replaced.
Components from a different valve series should
not be used with the repair of any other valve. If
the valve is altered in any way, no liability can be
accepted by SVF Flow Controls, Inc.
TABLE B: GENERAL REPAIR KIT
Part
Thrust Washer
Stem Seal
Seats
Body Seals
O-Rings
Quantity
1
1
2
2
2
TORQUE SPECS
Certain precautions need to be followed when
tightening bolts down to their corresponding
torques to help prevent bolt galling. There are
two passes each bolt has to undergo during the
process, first pass and the final pass. Once every
bolt has met the first pass requirement, the final
pass can be initiated. When tightening bolts it is
necessary to follow the corresponding bolt pattern
shown in Diagram A.
Body Bolts
80
89
159
177
177
First
Pass
Final
Pass
Bolt
Pattern
1
3
4
2
4
DIAGRAM A
INSTALLATION, OPERATION & MAINTENANCE FOR SVF SERIES BZ9 BALL VALVES
Stem Nuts
56
56
83
135
135
BZ9 SERIES BOLT PATTERN
BOLT TIGHTENING SEQUENCE
BZ9 REPAIR KIT PART NUMBERS
Valve Size
1/2”
3/4”
1”
1-1/2”
2”
Part Number
RKBZ905TT
RKBZ907TT
RKBZ910TT
RKBZ915TT
RKBZ920TT