Bray 5000_6000 Series - Manual

Installation and Maintenance Manual
Series 5000 and 6000 Ball Valves
Date: August 2011 / Page 1 of 6
®
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
5000/6000 SERIES BALL VALVES
INSTALLATION - MAINTENANCE MANUAL
DESIGN
The design features three piece construction and a “free
floating” ball allowing ease of maintenance without
special tools.
The ball is not fixed, but is free to move with the line
pressure. These valves are capable of tight shut-off
with flow in either direction regardless of the position
of the valve in the line.
The downstream seat, opposite the pressurized side of
a 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.
1. USE:
The valve should be inspected regularly as part of
a preventative maintenance program. Flow-Tek’s
recommended pressure, temperature and corrosion
limits should be followed to ensure a long service life.
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 throttling
service without investigating the consequences of flow
and pressure conditions to the valve.
WARNING: Before installing this equipment, confirm
that it is suitable for the intended service.
The identifications tags describe the maximum allowable
service conditions for this product.
Be sure that the installation is protected by appropriate
pressure control and safety devices to ensure that
acceptable limits are not exceeded.
2. OPERATION:
Operation of the valve is by turning the handle a 1/4
turn (90 degrees). CW to close, CCW to open.
A. VALVE OPEN POSITlON
The handle is parallel with the pipeline.
B. VALVE IN CLOSED POSITION
The handle is perpendicular to the pipeline.
Valves with actuators should be checked for actuator
-valve alignment. Misalignment will result in high
operational torque and damage to valve stem and seals.
STEM SEAL ADJUSTMENT:
Stem seal leakage may be corrected without disassembly
by tightening the packing gland nut gradually until the
leakage stops. If the leakage continues after adjustment
or the valve operating torque becomes excessive, the
seals are worn and should be replaced.
3. GENERAL INFORMATION FOR ON-SITE
INSTALLATION:
Please read completely and understand all instructions
provided prior to beginning installation or maintenance.
The pipes must be flushed clean of dirt, burrs, and
welding residues before installing the valve, or the
seats and ball surface will be damaged.
The valve may be installed in any position on the
pipeline. Care should be taken to insure that actuator
misalignment does not occur or the valve may experience
premature failure. The actuator may require support to
avoid binding the valve stem.
The pipe ends must be correctly aligned and spaced
as to not induce stresses in the valve.
As shipped from the factory, Valves may contain non-
silicone lubricant. This is for break-in and may be
removed by solvent washing, if it is undesirable in a
particular application.
INSTALLATION OF THREADED END VALVES:
1. The use of a thread sealant is recommended; Use
conventional sealant, such as hemp core, Teflon, etc;
2. Do not tighten by applying torque to the opposite
end cap or other valve components. Apply a
wrench only to the hex/octagon nearest the valve