2
U-20808/U-20809 Non-Adjustable Vertical Indicator Posts
Technical Data
3
The U-20808/U-20809 Indicator
Post bolts directly onto the stuffing
box flange of 4” – 24” post indicator
valves (PIV) employing 2” operating
nuts. The Bell attaches to a PIV
mounting flange having four bolt
holes spaced at 90° on a 10
1
/
2
”
diameter bolt circle. The Bell has
3
/
4
”
clearance holes for the mounting
bolts.
The U-20808 Indicator Post has a
Threaded Sleeve which can readily
accommodate field positioning of the
“OPEN” and “SHUT” Targets for 4” –
14” PIVs requiring 14 to 43 turns to
open. The U-20809 has a Threaded
Sleeve for 16” – 24” PIVs requiring
49 to 75 turns to open.
The U-20808/U-20809 Indicator Post
is available in three different “Order
Lengths.” Each “Order Length”
provides for adjustment of dimension
“D” (see tables on page 4). The
Stem requires no field cutting within
the indicated adjustment range of
each “Order Length.”
indicator Posts
Nominal trench depths can be
accommodated by each “Order
Length,” for the 4” – 24” USPVH
Resilient Wedge PIVs based on the
typical diameter of underground
pipe. For PIVs with different ‘B’
dimensions, the minimum and
maximum trench depths which will
be accommodated by each “Order
Length” can also be calculated (see
tables on page 4).
“Standard Order” Posts are factory
set with the “OPEN” and “SHUT”
Targets positioned for use with left
hand (counter-clockwise) opening
valves. An arrow on the Post Head
indicates the left hand direction
of opening. The position of the
Targets may be reversed in the field,
in order to accommodate a right
hand opening valve, provided that
the Post Head is changed to one
indicating right hand opening.
The Post Head is ASTM A126
Class B gray iron. The Cap is
polypropylene. The Bell, Operating
Nut, and U-20808 Operating Wrench
is ASTM A536 ductile iron. The
U-20809 Operating wrench is ASTM
A36 Hot Rolled Steel. The Windows
are made from polycarbonate. The
Barrel is schedule 40 steel pipe. The
Upper Stem, Lower Stem, Coupling,
and Coupling Insert are carbon
steel. The Targets and Sleeves are
Nylon. The Post Head, Upper Barrel,
and Wrench are painted red.