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Bray 3HP User Manual

Bray Equipment

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Installation and Maintenance Manual

Series 3HP 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

3HP SERIES BALL VALVES

Installation Guide

It is important that the middle port on the valve IS NOT

MOVED otherwise damage will occur to the seats.

1. Before installting the valves, firstly make sure that the

pipework has been cleaned and there is no trace of

debris or loose pieces of metal in the pipe or system.

2. Prepare the threaded pipe for connection to the valve

using either a thread sealant or PTFE tape, ensuring

that there is no surplus tape over the open pipe and

that may become dislodge and be carried through the

pipework system.

3. Taper Threads: Carefully insert the pipe threaded end

into the valve and tighten gently until resistance is felt.

The pressure tight joint can then be made by tighting a

further 1/2 to 1 turn as a guide. This will help prevent

over-thightening and having the risk of damaged

threads and resultant scrapping of components as a

result of poor connection.

4. Parallel Threads: These threads are designed for face

sealing and not bottom face sealing. Using a suitable

bonded washer, insert the threaded pipe into the valve

using a suitable lubricant or sealant if required and

tighten until resistance if felt. The pipe thread can then

be sealed with a further 1/4 turn to ensure that the

face of the thread seals with the washer where used.

Threads can be sealed using a pipe sealant but care

must be taken so as not to ‘bottom’ the thread and

hence cause damage to the lead thread on the male

end which may damage all the threads on removal.

5. When purging the system prior to use, make sure that

the valve is in the fully open position so that any loose

particles that may remain in the system will not mark

the ball or be trapped between the ball and the seats

as this will result in shorter life or leaking of the valve.

6. Finally, the gland seal is designed to be adjustable

and, should the seals settle between manufacturing

and installation, then it is suggested that 1/8 turn

clockwise will ensure no leakage or stop any small

weapage that may occur. This is not a design fault by

and adjustable item.

Operation Guide

This valve is designed to operate with pressure being

applied to the CENTER PORT ONLY. It is not designed to

isolate pressure for either side port.

Side entry style, the handle rotates 90° from open 6 to 3,

to open on the opposite side outlet 6 to 9.

Dismantling Instructions:

1. Remove the valve from the pipeline using a spanner on

the end connector for each side of the pipe.

2. Clean the valve of any residual material.

3. Take out each end connector, holding the spare body

whilst unscrewing each end.

4. Ensure that the handle is in the closed position and

push out the ball and seats in either direction.

5. Remove the handle retaining nut and take both the

handle and the nut off.

19
23

25a

1

2

3

4

6

12

28
25
26

15
14

5

Item Name

Material

Qty.

1

Body

Stainless Steel 316

1

2

End Connector

Stainless Steel 316

2

3

Ball

Stainless Steel 316

1

4

Seat*

PVDF

2

5

Stem

Stainless Steel 316

1

6

Body Seal*

RPTFE

2

12

Thrust Washer*

RPTFE

1

14

Stem Packing*

RPTFE

1

15

Packing Gland

Stainless Steel

1

19

Lock Washer

Stainless Steel

2

23

Stop Pin

Stainless Steel

1

25

Lever Handle

Stainless Steel

1

25a

Pointer Handle

Mazak 3

1

26

Lock Nut

Stainless Steel

1

28

Handle Sleeve

Vinyl

1