Bray S85 User Manual

A Subsidiary of BRAY INTERNATIONAL, Inc.

INSTALLATION – MAINTENANCE MANUAL
SERIES 85 FULL PORT, 2 PIECE BALL VALVE

Installation and Maintenance Manual

®

Series 85 Ball Valves

Date: August 2011 / Page 1 of 2

USE

Maximum results and long life of the valve can
be maintained under normal conditions and in
accordance with Flow-Tek’s pressure/temperature
and corrosion data. 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 intermediate positions without
knowledge of flow and pressure drop.

MANUAL OPERATION

The opening and closing of the valve is done by
turning the handle a quarter turn (90 degree turn)

A. VALVE OPEN POSITION

The handle is in line with the valve or pipeline.

B. VALVE IN CLOSED POSITION

The handle is across the pipeline.

Valves with actuators should be checked for actuator

- valve alignment. Angular or linear misalignment
will result in high operational torque, and damage to
valve stem and seals.

STEM SEAL ADJUSTMENT

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.

GENERAL INFORMATION FOR ON-SITE
INSTALLATION

1. The valve may be fitted in any position on the
pipeline.

2. 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.

3. The pipe must be free of tension.

INSTALLATION

1. Use conventional sealant, such as hemp core,
Teflon, etc.

2. Apply wrench only on the hexagon valve end
being tightened. Tightening by using the valve
body or handle can seriously damage the valve.

DISASSEMBLY FOR STEM AND SEAL REMOVAL

CAUTION: Ball valves can trap pressurized media
when closed. Flush line with valve 1/2 open to remove
hazardous media.

Stem seal leakage may be corrected without
disassembly by tightening the packing sleeve nut
(the nut underneath the handle) until such leakage
stops. If the leakage continues or valve operating
torque becomes excessive, the seals are worn and
replacement will be necessary.

DISASSEMBLY AND CLEANING PROCEDURE

1. 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 remval and assembly.

2. 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.

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

A. Remove valve from line for servicing.

B. Loosen handle nut and remove handle. Remove

packing sleeve nut.

C. Remove the threaded end cap for disassembly,

leaving the ball for last.

D. EXTREME CARE should be taken upon ball

removal as not to scratch seating surface or the
stem, which will result in leakage after reassembly.

E. Remove all seats, seals, stem packing and thrust

washer.

© 2011 Flow-Tek, Inc.

A Subsidiary of BRAY INTERNATIONAL, Inc.

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Installation and Maintenance Manual

®

Series 85 Ball Valves

Date: August 2011 / Page 2 of 2

ASSEMBLY

1. Install the thrust washer on stem O.D.

2. Install stem packing in valve body.

3. Insert stem into body, taking care not to pinch or
nick stem packing.

4. Install seat in the rear of the body cavity with the
spherical curvature facing the mating ball.

5. Insert ball in body, care should be taken not to
scratch the ball during installation.

6. Insert seat in threaded end cap so that spherical
curvature is facing the ball. Tighten end cap
tightly.

7. Tighten packing sleeve nut.

8. Place handle on assembly and tighten stem nut.

9. Safe and proper bench testing is required before
re-installing to service. Ensure that valve operates
smoothly.

WARNING: DO NOT REMOVE ANY VALVE PARTS
WHILE LINE IS UNDER PRESSURE! UNDER NO
CIRCUMSTANCES! LINE MUST BE DEPRESSURIZED
BEFORE DEISASSEMBLY. VALVE SHOULD BE CYCLED
TO ASSURE THERE IS NOT PRESSURE IN VALVE CAVITY.

Item Name

1 Body
2 End Cap
3 Ball
4 Seat*
5 Stem
6 Body Seal*
7 Anti-Static Device
8 Thrust Bearing*

9 Thrust Washer*
10 Stem Packing*
11 Packing Gland
12 Belleville Washer
13 Tab Lock Washer
14 Stop Set Sleeve
15 Stop Bolt
16 Handle
17 Nut
18 Handle Sleeve
19 Locking Device

*Parts included in the repair kits

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

This brochure is general in nature and manufacturer
reserves the right to change dimensions, materials or to
make design improvements

© 2011 Flow-Tek, Inc.