Bray RF15 & RF30 - Manual (Page 2)

Installation and Maintenance Manual
Series RF15-RF30 Ball Valves
Date: August 2011 / Page 2 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
steps are taken for safe removal and reassembly.
2. As shipped from the factory, valves contain a
Silicone based lubricant. This is for break-in
and may be removed, if it is objectionable for
a particular application, by disassembling and
solvent washing.
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 disassembly and solvent washing.
6. DISASSEMBLY
Stem seal leakage may be corrected without
disassembly. Tighten the packing gland nuts until
leakage stops. If leakage continues or valves operating
torque becomes excessive, the seals are worn and
replacement will be necessary.
Warning: DO NOT remove packing gland or any
other valve parts while line is under pressure! Under
no circumstance! Line must be depressurized before
disassembly.
A. Remove valve from line and clamp in vise
with handle and removable body insert in an
accessible position.
B. Put ball in the OPEN position. Insert spanner
wrench into slot in the retainer and rotate the
counter-clockwise.
C. Remove body seal from body. Use caution to
prevent damage to metal parts; discard seal.
D. Turn handle to CLOSED position so that the stem
tang and ball slot are in line with the port opening.
Lift or roll ball out of insert end.
E. If stem seals are to be replaced, remove handle
retainer nut, stop plate and packing gland. Push
stem into valve cavity and remove from retainer end.
F. Remove seats from insert and body cavity, remove
stem seals.
7. VISUAL INSPECTION:
Clean and inspect metal parts. It is not necessary to
replace the hall and stem unless the seating surfaces have
been damaged by abrasion or corrosion. Replacement
of all soft parts whenever the valve is disassembled
for reconditioning is strongly recommended. This is
the surest protection against subsequent leakage after
valve assembly. The replacement parts can he ordered
in kit form.
NOTE: The valve may be assembled and operated
dry where no lubricants are allowed in the system;
however, a light lubrication of mating parts will aid in
assembly and reduce initial operating torque. Lubricant
used must be compatible with the intended line fluid.
8. ASSEMBLY:
1. Install one seat in the body cavity with the
spherical curvature facing the ball.
2. Install thrust washer on stem and slide the stem
up through the body. Install packing and packing
gland with packing gland bolt.
3. Install stop plate, handle and handle nut.
4. Turn the handle to the CLOSED position. Line up
the ball slot with the stem tang and slide the ball
into position.
Open the valve to hold the ball in place.
5. Install the remaining seat in the insert with the
spherical curvature facing the ball. Install body
gasket.
6. Carefully center the insert and press down until the
threads are engaged. Start the threads clockwise
by hand tightening with the tool used for removal.
The end cap should be tightened until the end cap
is flush with the flange face. The insert bottoms out
in a metal to metal fit.