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.
A Subsidiary of BRAY INTERNATIONAL, Inc.
FLOW-TEK, Inc.
Tel: 832.912.2300
© 2012 Flow-Tek, Inc.
8323 N. Eldridge Pkwy #100
Fax: 832.912.2301
Houston, Texas 77041
www.flow-tek.com
FLOW-TEK, Inc.
Tel: 832.912.2300
© 2012 Flow-Tek, Inc.
8323 N. Eldridge Pkwy #100
Fax: 832.912.2301
Houston, Texas 77041
www.flow-tek.com
Both pins are driven inside before dismantling
UÊ
Position 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).
UÊ
Insert 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).
UÊ
Install the post cover (20) with gasket (19) and tighten
the nuts (23) as per Table-3.
UÊ
Slide 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.
UÊ
Reinstall 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.
UÊ
Mount 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
UÊ
Bolt the Bracket (24) on to the body, if it’s removed.
UÊ
Slide 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
