Bray S85 - Manual

Installation and Maintenance Manual
Series 85 Ball Valves
Date: August 2011 / Page 1 of 2
®
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
INSTALLATION – MAINTENANCE MANUAL
SERIES 85 FULL PORT, 2 PIECE BALL VALVE
USE
Maximum results and long life of the valve can
be maintained under normal conditions and in
accordance with Flow-Tek’s pressure/temperature
and corrosion data. During shipment, storage,
and in operation, the valve should be fully open or
fully closed (“open” is preferred for shipping and
storage). Do not use in intermediate positions without
knowledge of flow and pressure drop.
MANUAL OPERATION
The opening and closing of the valve is done by
turning the handle a quarter turn (90 degree turn)
A. VALVE OPEN POSITION
The handle is in line with the valve or pipeline.
B. VALVE IN CLOSED POSITION
The handle is across the pipeline.
Valves with actuators should be checked for actuator
- valve alignment. Angular or linear misalignment
will result in high operational torque, and damage to
valve stem and seals.
STEM SEAL ADJUSTMENT
If slight leakage is noted at stem, straighten lock washer
tab, tighten stem nut to flatten Bellville Washers, back
stem nut off 1/4 turn, secure lock washer tab.
DISASSEMBLY AND CLEANING PROCEDURE
1. If the valve has been used to control hazardous
media, it must be decontaminated before
disassembly. It is recommended that the following
steps be taken for safe remval and assembly.
2. As shipped from the factory, valves contain
Silicone based lubricant. This is for break-in and
may be removed by disassembly and solvent
washing, if it is objectionable for a particular
application.
GENERAL INFORMATION FOR ON-SITE
INSTALLATION
1. The valve may be fitted in any position on the
pipeline.
2. Before installing the valves, the pipes must be
flushed clean of dirt, burrs, and welding residues,
or the seats and ball surface will be damaged.
3. The pipe must be free of tension.
INSTALLATION
1. Use conventional sealant, such as hemp core,
Teflon, etc.
2. Apply wrench only on the hexagon valve end
being tightened. Tightening by using the valve
body or handle can seriously damage the valve.
DISASSEMBLY FOR STEM AND SEAL REMOVAL
CAUTION: Ball valves can trap pressurized media
when closed. Flush line with valve 1/2 open to remove
hazardous media.
Stem seal leakage may be corrected without
disassembly by tightening the packing sleeve nut
(the nut underneath the handle) until such leakage
stops. If the leakage continues or valve operating
torque becomes excessive, the seals are worn and
replacement will be necessary.
A. Remove valve from line for servicing.
B. Loosen handle nut and remove handle. Remove
packing sleeve nut.
C. Remove the threaded end cap for disassembly,
leaving the ball for last.
D. EXTREME CARE should be taken upon ball
removal as not to scratch seating surface or the
stem, which will result in leakage after reassembly.
E. Remove all seats, seals, stem packing and thrust
washer.