Bray FlowTek RF15 Series Installation & Maintenance Manual

A Subsidiary of BRAY INTERNATIONAL, Inc.
DESIGN
The design features of this valve include a one piece construction
body which results in simplified maintenance and trouble free
operation. 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 or dead-ended, 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 maintained as part of a preventative
maintenance program and in accordance with Flow-Tek's
recommended pressure, temperature and corrosion limits to
insure 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 insure 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). Clockwise to close, counter clockwise
to open.
A. VALVE OPEN POSITlON
The handle is parallel with the pipeline.
FLOW-TEK, Inc.
8323 N. Eldridge Pkwy #100
Houston, Texas 77041
®
INSTALLATION - MAINTENANCE MANUAL
RF15 and RF30 Series
150 and 300 Lb. Flanged One piece Ball Valves
Tel: 832.912.2300
Fax: 832.912.2301
www.flow-tek.com
Installation and Maintenance Manual
Series RF15-RF30 Ball Valves
Date: August 2020 / Page 1 of 5
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 stem and seals.
3. STEM SEAL ADJUSTMENT
1. For 1"- 2", 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.
2. 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 AND CLEANING PROCEDURE
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.
Valve should be cycled to assure there is no pressure
in the valve body cavity.
Warning: DONOT remove packing gland or any other
valve parts while line is under pressure!
1. If the valve has been used to control hazardous media,
it must be decontaminated before disassembly. It is
recommended that the following steps are taken for safe
removal and reassembly.
© 2020 Flow-Tek, Inc.