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Bray S85 User Manual

Bray Equipment

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Installation and Maintenance Manual

Series 85 Ball Valves

Date: August 2011 / Page 1 of 2

®

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

SERIES 85 FULL PORT, 2 PIECE BALL VALVE

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.

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.

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.

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.