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FPD350 Torbar
Averaging pitot tubes
3.4 Threaded Models FPD350.(H6/H7)
Warning. Do not position any part of the body in the
Torbar's exit path when removing or refitting the Torbar.
3.4.1 Removing
Referring to Fig. 3.2:
1. Slacken packing gland bolts
to enable the slow, controlled exit of the Torbar.
Note. During step 2, turn drive nuts
evenly to prevent binding.
2. Drawbolt retraction assembly only – Loosen lock nuts
B
and turn drive-nuts
until the Torbar passes through isolation valve
the retraction assembly is in the fully retracted position
E
.
3. Geared retraction assembly only – turn the integral
handle counter-clockwise until the Torbar passes through
D
isolation valve
).
D
4. Close isolation valve
5. Slacken packing gland bolts
pressure in pressure chamber
6. Remove the Torbar completely if required.
3.4.2 Refitting
Referring to Fig. 3.2:
1. Insert the Torbar into packing gland
2. Turn the Torbar until the indentation marks on the head are
positioned downstream of the flow – see Fig. 2.1, page 3.
3. Tighten the packing gland bolts
until the packing gland is fully sealed, ensuring the Torbar
is able to slide through it.
4. Carefully open isolation valve
around packing gland
Note. During step 5, turn drive nuts
evenly to prevent binding.
5. Drawbolt retraction assembly only – turn each drive-nut
H
clockwise alternately until the Torbar passes through
D
isolation valve
and contacts the opposite internal wall
of the process pipe (
Models FPD350.(H6/H7).E1
F
the opposite fitting
Torbar is inserted fully, ensure the drawbolts
K
nuts
are in the positions shown.
6. Drawbolt retraction assembly only – tighten lock nuts
B
.
OI/FPD350–EN Rev. H
A
evenly and just sufficiently
C
equally and
C
counter-clockwise alternately
D
. Ensure
.
A
slowly to release the
F
.
G
.
A
equally and evenly
D
and check for leaks
G
.
H
equally and
) or enters
(
). When the
Model FPD350.H7.E2
J
and stop
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.
7. Optional geared retraction assembly only – turn the
integral handle clockwise until the Torbar contacts the
opposite internal wall of the process pipe (
) or enters the opposite fitting
FPD350.(H6/H7).E1
(
).
Model FPD350.H7.E2
8. Fully tighten packing gland bolts
does not turn. Check for leaks.
Fully Retracted
E
B
Model H702 Only
H
Fig. 3.2 Removing and Refitting Models FPD350.(H6/H7)
3 Torbar Removing and Refitting
Models
A
, ensuring the Torbar
Fully Inserted
J
D
F
C
A
G
F
K
27
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