Dimensions / weights (approximate) in mm and kg
Capacities
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Weight
D
E BPT13T BPT13TGX
50 55
1.1
1.35
50 55
1.2
1.45
50 55
1.5
1.75
E Withdrawal distance
B
D
C
The trap is designed for installation with the capsule in a horizontal
plane and the cap at the top, preferably with a drop leg immediately
preceding the trap. See IM-P126-05 for full installation details.
Warning:
Under certain conditions corrosive elements in condensate
can effect the inside face of the sight tube, particularly where
caustic alkali and hydrofluoric acid are present. It is
recommended that the sight tube is periodically checked for
thinning. If there is evidence of thinning or erosion damage
then the sight tube should be replaced immediately. Always
wear eye protection when viewing the contents of the
sight tube.
Reasonable steps should be taken to protect personnel from
injury in the unlikely event that the sight tube breaks.
Operation
The trap is supplied in the 'Bypass' position (1). To move it to
'Trap' (2) or 'Stop' (3) position the actuator should be moved until
the indicator aligns with the marking on the body.
1
2
3
Maintenance
See IM-P126-05 for full maintenance details
Before any maintenance is undertaken, suitable independent isolation
valves should be closed and the trap positioned in the 'bypass' mode.
Allow the trap to cool. Remove the cap and lift out the old capsule,
spring and spacer plate. Drop in a new spacer plate,
capsule and spring. Screw on the cap using a new 'O' ring assembled
into the groove in the top of the cap. Always fit a completely new
assembly when replacing the capsule.
Recommended tightening torques
Size
A
B B1 C
1⁄2"
92 97 133 45
3⁄4"
92 117 153 45
1"
92 127 163 45
A
Indicator
Installation
Hot water capacity
The spare parts available are shown in heavy outline. Parts drawn
in broken line are not supplied as spares.
Available spares
Capsule assembly
Maintenance kit
Sight tube assembly
Replacement of capsule assembly:
BPT13T
3
19
18
17
16
12
15
11
6
13 14
6
7
4
Item
2 and 20
2 and 20
2 and 20
3
4
7
9
12
Size
DN15
32
DN20
36
DN25
46
or
Nm
mm
35 - 40
35 - 40
35 - 40
50 - 60
-
7 - 10
12 - 15
12 - 15
20
Sight tube
assembly
21 22 21
2
DN15 - 25
DN15 - 25
DN15 - 25
DN15 - 25
DN15 - 25
50
30
13
13
17
B1
How to order
Example: 1 off 1⁄2" Spirax Sarco BPT13 balanced pressure
thermostatic steam trap with a capsule marked 'SUB' for
sub-cooled operation.
Steam traps
Balanced pressure
C
a
p
a
c
i
t
i
e
s
k
g
/
h
9
TI-P126-03 ST Issue 6
BPT13T and BPT13TGX Thermostatic Steam Traps
Spare parts
2
14 13
Differential pressure bar (x 100 = kPa)
Cold water capacity
16, 17*, 18, 19
6 (2 off), 11, 12, 13 (2 off), 14 (2 off),
*Note: The capsule can be identified from the letter stamped on
the name-plate on the cap (e.g. STD, SUB or NTS). A standard
capsule (STD) will be supplied, unless specified otherwise on
the order.
Always order spares by using the description given in the column
headed 'Available spares' and state the size and type of trap.
Example: 1 - Capsule assembly, marked STD, for a Spirax Sarco
BPT13T balanced pressure thermostatic steam trap.
How to order spares
BPT13GX only
15, 16, 17*, 18, 19
21 (2 off), 22
5.2.4
