Bray RF15 & RF30 - Manual

Installation and Maintenance Manual
Series RF15-RF30 Ball Valves
Date: August 2011 / Page 1 of 5
®
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
RF15 and RF30 Series
150 and 300 Lb. Flanged One piece Ball Valves
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.
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