FPD350 Torbar
Averaging pitot tubes
2 Initial Installation
22
OI/FPD350–EN Rev. H
2.17 Flanged Models FPD350.(H7/H8).E2 with Flanged End-Support Fitting (mounting types F3, F4)
Install the Torbar as follows:
1. Install the flanged pipe fitting (stand-off) – see Section
2. Measure exactly 180° around the pipe circumference and
mark the pipe.
3. Drill a 6 mm (0.24 in) pilot hole in the process pipe at the
marked position, then drill to the appropriate size – see
Table 2.10.
4. Referring to Fig. 2.15:
a. Fit isolation valve
A
to flanged coupling
B
.
b. Ensure 6 packing rings are located correctly inside
packing gland
C
.
c. Ensure the drawbolt (or optional geared) retraction
assembly
D
is in the fully retracted position.
d. Fit flanged pressure chamber
E
, complete with
packing gland
C
and retraction assembly
D
, to
isolation valve
A
.
e. Insert the Torbar into packing gland
C
.
f.
Turn the Torbar until the indentation marks on the
head are positioned downstream of the flow – see
Fig. 2.1, page 3.
g. Tighten the packing gland bolts
F
equally and
evenly until the packing gland is fully sealed,
ensuring the Torbar is able to slide through it.
h. Open isolation valve
A
.
i.
Drawbolt retraction assembly only
– turn each
drive-nut
H
clockwise alternately until the Torbar
passes through isolation valve
A
and protrudes
from the hole on the opposite side of the process
pipe by:
FPD350.H7.E2 – 40 mm (1.6 in)
FPD350.H8.E2 – 65 mm (2.6 in)
When the Torbar is inserted fully, ensure drawbolts
H
and stop nuts
J
are in the positions shown.
j.
Geared retraction assembly only
– turn the
integral handle clockwise until the Torbar protrudes
from the threaded fitting on the opposite side of the
process pipe by:
FPD350.H7.E2 – 40 mm (1.6 in)
FPD350.H8.E2 – 65 mm (2.6 in)
k. Position the flanged pipe fitting (stand-off)
L
over
the tip of the Torbar, ensuring the tip enters the end
support stub.
l.
Refer to Section 2.18, Steps 3b and 3c on page 24
and tack-weld the flanged pipe fitting (stand-off)
L
in place.
m. Reverse step i (drawbolt retraction assembly) or step
j (geared retraction assembly) and retract the Torbar
by 100 mm (4.0 in).
n. Refer to Section 2.18, Steps 3d to 3g on page 24
and complete the installation of the flanged pipe
fitting (stand-off)
L
.
o. Repeat step i (drawbolt retraction assembly) or step
j (geared retraction assembly) to re-insert the Torbar
until the tip is within:
FPD350.H7.E2 – 40 mm (1.6 in)
FPD350.H8.E2 – 65 mm (2.6 in)
of the face of the flange on the flanged pipe fitting
(stand-off)
L
.
p. Position a gasket on the flanged end support flitting
M
, ensuring the integral support cup faces the tip
of the Torbar.
q. Fit the flanged end support flitting
M
to the flanged
pipe fitting (stand-off)
L
, ensuring the tip of the
Torbar enters the support cup.
r.
Drawbolt retraction assembly only
– tighten lock
nuts
K
.
s. Fully tighten packing gland bolts
F
, ensuring the
Torbar does not turn. Check for leaks.
5. Check the Torbar is installed correctly and aligned.
6. Pressurize the process pipe and check for leaks.
Warning.
Flanged models FPD350.(H7/H8).E2 are
supported in the process pipe at the Torbar tip as well as at
the entry point into the pipe, therefore they cannot be
'Hot-Tap' installed. Before drilling into the pipe, reduce the
pipe pressure to a safe level and remove all hazardous
material.
Flanged Torbar
Model
FPD350.H7.E2
FPD350.H8.E2
Hole size in mm (in)
28 (1.1)
65 (2.56)
Table 2.10 Hole Size
Note.
During step l, turn drive nuts
G
equally and
evenly to prevent binding.
Note.
The gear retraction handle is supplied loose
and can be fitted to either side of the gears.
However, ensure the handle is fitted so that the
Torbar is inserted when the handle is turned
clockwise.
