Bray 7000_8000 Series User Manual

Page 5

Installation and Maintenance Manual

Series 7000 and 8000 Ball Valves

Date: August 2011 / Page 5 of 9

A Subsidiary of BRAY INTERNATIONAL, Inc.

FLOW-TEK,

Inc.

Tel:

832.912.2300

8323 N. Eldridge Pkwy #100

Fax: 832.912.2301

Houston,

Texas

77041

www.flow-tek.com

tight. Install travel stop (22) and snap ring (30):

7. Rotate the stem to the closed position (the upper

stem flat is perpendicular to the port centerline) and

install the ball (3) inside the valve body. The lower

stem flats will fit into the slot on top of the ball;

8. Turn the stem so that the ball is in the open position

the upper stem flat is parallel to the bore centerline.

The ball will not fall out of the valve;

9. Install the seats (4) and body seals (6) into the body

ends. Make sure the spherical curvature side of the

seat will face the ball;

10. Lift the valve into position between the flanges in the

pipeline.

11. Install the end cap bolts (9), lock washers (7) and

nuts (8). Cross tighten all nuts to the values indicated

in Table 1.

12. Secure the handle (25A) with the handle bolt (27).

13. Cycle the valve slowly several times. By cycling slowly,

the seats will align with and conform to the ball. A fast

turning motion initially may damage the seats before

they have a chance to form the proper seal:

6”-12” VALVE RE-ASSEMBLY PROCEDURES:

(refer to page 8)

1. Hold the body horizontally in a vise firmly enough

so it will not move but do not crush it.

2. Install bearing sleeve (13), washer protector (11A)

and thrust washer (12) on valve stem (5) and slide

the stem into the stem hole on valve body (1):

3. Slide the stem packing (14) onto the stem until it is

seated against the bottom of the stem hole;

4. Put packing protector (1lB), then packing gland sleeve

(15) onto the stem, on top of the stem packing;

5. Install packing gland (16) and bolts (17). Lightly

tighten to secure packing gland.

6. Install stop housing (20) and housing bolts (21) hand

tight. Install travel stop (22) and snap ring (30):

7. Rotate the stem to the closed position (the upper

stem flat is perpendicular to the port centerline) and

install the ball (3) inside the valve body. The lower

stem flats will fit into the slot on top of the ball;

8. Turn the stem so that the ball is in the open position

the upper stem flat is parallel to the bore centerline.

The ball will not fall out of the valve.

9. Install the seats (4A), seat support rings (4B) and

body seals (6) into the body ends. Make sure the

spherical curvature side of the seat faces the ball;

10. Lift the valve into position between the flanges in the

pipeline.

11. Install the end cap screws (9) and lock washers (7).

Cross tighten the screws to the values indicated in

Table 1.

12. Install the handle junction head (25B) onto the valve

stem. Secure in place with one of the setscrews

provided (27A).

13. Secure the handle (25) with the remaining setscrew

(27).

14. Cycle the valve slowly several times. The seats will

align with and conform to the ball. A fast turning

motion initially may damage the seats before they

have a chance to form the proper seal:

Refer to the instructions given in section 2, above, to re-

commission the valve after installation.

For automated installations, follow the instructions

provided with actuation instrumentation to correctly set

up and recalibrate the installation.

Table 1 - Tightening torques for end cap nuts

VALVE SIZE

1/2" 3/4"

1 -1/4" 1-1/2"

3”

4”

6”

8”

10” 12”

Nut Torque (lb-in) 130

130

200

200 530

(Lb-ft)

150 240