Figure 8 – Bray 19 Series User Manual

Page 6

Installation and Maintenance Manual

Series 19 - Segmented Ball Valves

Date: Feb 2013 / Page 10 of 19

Installation and Maintenance Manual

Series 19 - Segmented Ball Valves

Date: Feb 2013 / Page 11 of 19

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

FLOW-TEK, Inc.

Tel: 832.912.2300

8323 N. Eldridge Pkwy #100

Fax: 832.912.2301

Houston, Texas 77041

www.flow-tek.com

Both pins are driven inside before dismantling

UÊPosition the stem (8) so that the pin hole in the stem (8)

and Segment (5) are in alignment. (Stem flats on the
top and pin holes are perpendicular to each other).
Install the stem pin (10) and drive it firmly into place so
that half is in the Segment (5) and half in the stem (8).

UÊInsert the end post (9) through the out board end of the

body (1). End post has a half circle mark on the end.
Align this mark with the Segment (5). Install the end post
pin (11) and drive it firmly into place so that half is in
the Segment (5) and half is in the end post (9).

UÊInstall the post cover (20) with gasket (19) and tighten

the nuts (23) as per Table-3.

UÊSlide thrust washer (12), packing (13), and gland ring

(14) over the double D end of the stem (8) and into
packing box bore.

NOTE:

Always use new packing whenever rebuilding

the packing box.

CAUTION:

Since the sealing on V-ring packing takes

place at the feather edge, it is imperative to avoid
damage to that edge.

UÊReinstall the gland retainer (15), packing studs (16),

packing washers (17) and packing nuts (18), tighten
the packing nuts (18) just over finger-tight. Packing nuts
should be tightened as necessary to prevent stem leakage.

CAUTION:

Do not over tighten packing. This can cause

excessive packing wear and high shaft friction, which
may retard shaft rotation.

UÊMount the Seat (2) as explained in

“Installing the Seat

for Class 150 & 300 Design”

9.6 Remounting the Actuator

Before mounting an actuator on the valve body (1), verify
that the Segment (5) rotation matches the actuator rotation
and complies with the air failure requirements. Procedure for
mounting the actuator is as follows

UÊBolt the Bracket (24) on to the body, if it’s removed.

UÊSlide the entire actuator assembly onto the shaft. (Please

refer to the actuator IOM for necessary adjustments on
the assembling with valve for the lever adjustments for
the clamped lever designs etc.)

Figure 8