beautypg.com

Bray Multi-Port Series User Manual

Bray Equipment

background image

Installation and Maintenance Manual

Multiport Threaded and Weld End Ball Valves

Date: May 2011 / Page 1 of 3

®

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

MULTIPORT THREADED AND WELD END BALL VALVES

MPC, MPT, MPS, MPB 130/230/240

USE:

Life of valves can be extended when it is maintained

under normal working conditions and in accordance

with pressure/temperature and corrosion data chart.

VALVE OPERATIONS:

The three way ball valve can be configured into several

options. Generally, flow pattern can be set with a quarter

(90 degree) turn or half (180 degree) turn. Please consult

our flow pattern chart for more information.

A. MANUAL OPERATION

Flow indicator shows the actual valve flow path. Il-

lustration below shows the location of the flow indicator

on the valve stem. Turn the handle 90 degrees or 180

degrees in accordance to your set flow pattern.

B. ACUTATOR OPERATION

Prior to actuator installation, please check the flow path

of the valve by observing the port openings. Mark this

opening on the ball valve prior to actuator installation

in order to get the correct flow orientation. After actua-

tor installation, valve should be checked for valve stem

alignment. Angular or linear misalignment will result in

high operational torque and unnecessary wear on the

stem seal.

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

to prevent damage to the seats and ball surface.

• The pipeline must be free of tension.

INSTALLATION OF THREADED VALVES:

• Use conventional sealant, such as hemp core,

Teflon, etc. on the threads.

• Apply wrench on the hexagon end of the valve

only. Tightening by using the valve body or handle

can seriously damage the valve.

• For applications where screwed end valves are

back-welded on site, these valves must be disman-

tled according to instructions for weld end valves.

INSTALLATION OF WELD-END VALVES:

1. Prior to welding, end caps must be removed from the

body to prevent damage to the internal soft seals.

2. Weld end type valves already have the body bolts

loosen prior to shipment. Remove all the body bolts

(#19) and place them in a safe place.

3. Remove each end caps (#2) from the body (#1)

and carefully remove the soft parts (seats #4 and

gaskets #5 from each of the end caps) and place

them in a safe place.

4. Weld the pipe stub to each of the end caps. When

stub and the end cap has cooled down, clean both

end caps and stub body surface.

5. Replace the soft parts (seats #4 and gaskets #5)

into its original position. Replace all the bolts (#19)

and tighten slightly. This operation is very important

to keep body and end caps perfectly parallel, thus,

preventing distortion of the end caps.

6. Tighten body bolts evenly according to the body

bolt torque chart on next page.

7. Check the valve for proper operation.

Flow Direction