Spirax Sarco FTC80, Инструкция по установке и обслуживанию

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IM-IBR16-32IN
Issue 1 20
Table 1 Recommended tightening torques - see Figure 12
Item Part
or
mm
Torque
N m lbf ft
5 Cover nuts 30 A/F M20 425 314
11 Strainer nuts 19 A/F M12 80 59
12
Air
vent
Body 24 A/F ½" BSP or NPT See note below
Bleed screw
17 A/F
M12 22 – 25 17 - 19
15 Valve seat 24 A/F M16 60 45
18b Assembly nuts 19 A/F M12 80 60
27 Drain plug 22 A/F ½" BSP or NPT See note below
Joining compound on threads
A high temperature manganese thread jointing compound is applied to the FTC80 threads
on the drain plug (as standard) air vent connection (if screwed connection is required) and
fixed bleed stud ( if requested). The jointing compound can be used in the temperature range
of -20 °C to 600 °C (-4 °F to 1112 °F) and of a pressure up to 193 bar g (2 799 psi g). Following
application, the joining compound must be allowed to cure for 5 minutes before assembly
and 24 hours before testing. It is resistant to high temperatures and pressures. It also resists
vibration and thermal expansion. Hemp may be used as reinforcement, this must be fully
wetted with the compound prior to assembly of the joint. It is suitable for use with high pressure
steam, non potable water, compressed air, LPG, natural gas and alcohol, but it is not suitable
for oils or petroleum products.
How jointing compounds are applied
Prior to applying the jointing compound, it is most important that both the male and female
threads are clean i.e. all traces of cutting fluid, rust, paint, grease and any other contaminant
is removed. If a joint is being remade then all traces of previous jointing compound etc must
be removed before applying fresh material.
Under normal pipe fitting practice, jointing compound is applied to the male thread and is
usually reinforced with a small quantity of hemp. Any excess compound which extrudes
around the joint when it has been assembled should be wiped clean.
Note:
The recommended procedure for tightening taper threads is to screw the connection
until it is hand tight and then proceed to screw the component another 2 to 3 complete turns
to effect a seal.
6.7 How to replace the manually
operated air vent BDV2
-
Turn the bleed screw anticlockwise by one half or one whole
turn to check that the trap is depressurised.
-
Unscrew the air vent plug ( 12 ) and remove it from the trap.
-
Tighten the new BDV2 air vent ( 12 ) to the recommended
torque (see Table 1).
12
Bleed
screw
Fig. 11