FPD350 Torbar
Averaging pitot tubes
2 Initial Installation
14
OI/FPD350–EN Rev. H
2.13 Threaded Models FPD350.L6.E1 and FPD350.L7.E1
Install the Torbar as follows:
1. Select the required insertion position and mark the pipe.
2. Align the threaded fitting over the mark and tack-weld it in
place.
3. Using a suitably sized and threaded length of pipe, check
the threaded fitting is aligned correctly – see Fig. 2.2,
page 4.
4. Weld the threaded fitting to the pipe.
5. Referring to Fig. 2.12:
a. Apply suitable sealant to the close nipple
A
and
isolation valve
B
and fit them to the threaded fitting
C
. Tighten securely.
b. Attach hot-tap drilling equipment to isolation valve
B
in accordance with the manufacturer's
instructions.
c. 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 2.7.
d. Withdraw the drill, close isolation valve
B
fully and
remove the hot-tap drilling equipment.
e. Ensure 6 packing rings are located correctly inside
packing gland
D
.
f.
Ensure the drawbolt (or optional geared) retraction
assembly
E
is in the fully retracted position.
g. Fit pressure chamber
F
, complete with packing
gland
D
and retraction assembly
E
, to isolation
valve
B
, using appropriate sealants where
necessary.
h. Insert the Torbar into packing gland
D
.
i.
Turn the Torbar until the indentation marks on the
head are positioned downstream of the flow – see
Fig. 2.1, page 3.
j.
Tighten the packing gland bolts
G
equally and
evenly until the packing gland is fully sealed,
ensuring the Torbar is able to slide through it.
k. Carefully open isolation valve
B
and check for
leaks around packing gland
D
.
l.
Drawbolt retraction assembly only
– turn each
drive-nut
H
clockwise alternately until the Torbar
passes through isolation valve
B
and contacts the
opposite side of the process pipe. When the Torbar
is inserted fully, ensure the drawbolts
J
and stop
nuts
K
are in the positions shown.
m.
Drawbolt retraction assembly only
– tighten lock
nuts
L
.
n.
Optional geared retraction assembly only
– turn
the integral handle clockwise until the Torbar
contacts the opposite side of the process pipe.
o. Fully tighten packing gland bolts
G
, ensuring the
Torbar does not turn. Check for leaks.
6. Check that the Torbar is installed correctly and aligned.
Warning.
Threaded models FPD350.L6.E1 and
FPD350.L7.E1 are designed for 'Hot-Tap' installation.
Observe all relevant safety precautions for drilling into
pressurized pipelines, and ensure the process material does
not exceed the Torbar's specified pressure and temperature
limits.
Torbar Model
H601
H701
Hole size in mm (in)
16 (0.63)
28 (1.1)
Table 2.7 Hole Size
Note.
During step l, turn drive nuts
H
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.
