Bray Triad Series - Manual

Installation and Maintenance Manual
Triad Series Ball Valves
Date: August 2011 / Page 1 of 7
®
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
TRIAD SERIES BALL VALVES
(FP2000/FP3000 SP2000/SP3000)
INSTALLATION - MAINTENANCE MANUAL
DESIGN
The design features of this valve include a three piece
construction, allowing ease of maintenance without
special tools. These valves feature a “free floating”
ball. The ball is not fixed, but is free to move with the
line pressure. As a result of this feature, 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. Turning the valve end-for-end in
the pipeline will increase useful seat life by dividing seat
wear between the two seats.
1. USE:
The valve should be maintained as part of a preventative
maintenance program and in accordance with Flow-Tek’s
recommended pressure, temperature and corrosion limits
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 flow
and pressure conditions.
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 done by turning the handle a
1/4 turn (90 degree turn). CW to close, CCW to open.
A. VALVE OPEN POSITION
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.
3. STEM SEAL ADJUSTMENT:
For 1/2”- 2”, if slight leakage is noted at stem, straighten
lock washer tab, tighten stem nut to flatten Bellville Wash-
ers, back stem nut off 1/4 turn, secure lock washer tab.
For sizes larger than 2”, simply tighten gland bolts evenly
until leak stops. Do not over tighten.
4. GENERAL INFORMATION FOR ON-SITE
INSTALLATION:
The valve may be fitted in any position on the pipeline.
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.
5. DISASSEMBLY & CLEANING PROCEDURES:
CAUTION: Line must be depressurized before disassembly.
Valve should be cycled to assure there is no pressure is
trapped in valve cavity. Ball valves can trap pressurized
media when closed. Flush line with valve 1/2 open to
remove hazardous media.
WARNING: DO NOT remove packing gland or any other
valve parts while line is under pressure!
Stem seal leakage may be corrected without disassembly
by tightening the packing gland nut until such leakage
stops. If the leakage continues or valve operating torque
becomes excessive, the seals are worn and replacement
will be necessary.
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 removal and assembly.
As shipped from the factory, Valves contain Silicone based
lubricant. This is for break-in and may be removed by