Bray F15, F30 User Manual

A Subsidiary of BRAY INTERNATIONAL, Inc.

INSTALLATION - MAINTENANCE MANUAL

F15 and F30 Series

150 and 300 Lb. Flanged Full Port Ball Valves

Installation and Maintenance Manual

®

F15/F30 Ball Valves

Date: August 2011 / Page 1 of 5

DESIGN

The design features of this valve include a split body,
two 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 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.

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

1. For 1/2”- 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.

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). CW to close, CCW to open.

A. VALVE OPEN POSITlON

The handle is parallel with the pipeline.

FLOW-TEK, Inc. Tel: [phone]
8323 N. Eldridge Pkwy #100 Fax: [phone]
Houston, Texas 77041 www.flow-tek.com

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.

© 2011 Flow-Tek, Inc.

A Subsidiary of BRAY INTERNATIONAL, Inc.

Installation and Maintenance Manual

®

F15/F30 Ball Valves

Date: August 2011 / Page 2 of 5

As shipped from the factory, Valves contain Silicone based
lubricant. This is for break-in and may be removed by
disassembly and solvent washing, if it is objectionable
for a particular application,

6. DISASSEMBLY FOR STEM AND SEAL REMOVAL:

1. Remove flange bolts and nuts and lift valve from
line for servicing.

NOTE: Care should be taken to avoid scratching
or damaging serrated flange face. These valves

are heavy!

They should be adequately supported before
removal from the line is begun.

2. Loosen handle set screw and remove handle and
stop plate. Next, remove gland nuts, gland flange
and gland.

3. Remove body end nuts, using proper wrench size.
Lift off body end. One seat should come out with
body end.

4. Remove body seal.

5. To take out the ball, rotate stem so ball is in fully
closed position. Lift ball from body, using a strap
and lift device, if necessary. NOTE: Extreme cau­tion should be taken to avoid damage to the ball.

6. Take out other seat.

7. Stem must be removed from inside the body - a
tap on the top of the stem should loosen it. The
thrust washer should come out with the stem. Then
remove the stem packing.

7. VISUAL INSPECTION:

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 seat 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 retainer nut.

4. Turn the handle CW to the CLOSED position. Line
up the ball slot with the stem tang and slide the
ball into position. Turn the handle CCW to the
OPEN position to hold the ball in place.

5. Install the remaining seat into end cap seat pocket

6. Put body seal gasket into shoulder counter bore
at flange in valve body.

7. Put end cap back into body and line up end flange.
Because the body flange bolt pattern is different
from the line flange bolt pattern, it is possible to
assemble the valve which the bolt holes in the
line flanges don’t line up. Be certain to align end
flanges bolt holes to straddle valve center lines.

NOTE: Be careful not to damage body seal when
assembling end into body.

8. Install body end nuts and tighten in a crossing
pattern to the torque specified in Table 1.

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. we strongly
recommend replacement of all soft parts whenever the
valve is disassembled for reconditioning.

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

FLOW-TEK, Inc. Tel: [phone]
8323 N. Eldridge Pkwy #100 Fax: [phone]
Houston, Texas 77041 www.flow-tek.com

9. WARNING: Extreme care must be exercised
during adjustment of body stud nuts to make sure
that body studs are fully engaged. There should
be at least one stud thread exposed beyond the
flange on the body side and beyond the nut on
the cap side.

© 2011 Flow-Tek, Inc.