Steam traps
Balanced pressure
Capacities
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Spare parts
The spare parts available are shown in solid outline. Parts drawn
in broken line are not supplied as spares.
Available spares
Capsule and seat assembly set
Gasket set
Strainer screen (packet of 3)
How to order spares
2, 3, 5, 8, 9, 10
5, 8
4
Always order spares by using the description given in the column
headed 'Available spares' and state the size and type of trap.
Example: 1 off Capsule and seat assembly for Spirax Sarco 1⁄2"
BPM21L balanced pressure thermostatic steam trap having STD
fill operation at 13°C below steam saturation temperature.
Differential pressure bar (x 100 = kPa)
Dimensions / weights (approximate) in mm and kg
Size
A
B
C
D
E
Weight
"
70
62
35
15
20
0.9
1⁄2"
70
62
35
15
20
0.9
7
(Not an
available
spare)
5
10
9
4
Withdrawal distance E
C
B
A
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
(IM-P124-09) supplied with the product.
Installation note:
The trap is designed for installation with the capsule in a horizontal
plane and the cover at the top, preferably with a drop leg
immediately preceding the trap. Installation in a vertical plane is
also acceptable. When welding the trap into the pipeline, there is
no need to remove the capsule, providing the welding is done by
the electric arc method. Suitable isolation valves must be installed
to allow for safe maintenance and trap replacement.
Disposal:
This product is recyclable. No ecological hazard is anticipated with
the disposal of this product, providing due care is taken.
How to order
Example: 1 off Spirax Sarco 1⁄2" BPM21L balanced pressure
thermostatic steam trap having screwed BSP connections. The
unit is to be supplied with a steel body with internal strainer screen
and STD capsule for operation approximately 13°C below steam
saturation temperature.
2
3
8
D
Recommended tightening torques
Item Part
3
Valve seat
7
Cover bolts
Nm
50 - 55
14 - 18
or
mm
17 A / F
M8 x 25
BPM21L Steel Balanced Pressure Thermostatic Steam Trap
TI-P124-08 ST Issue 2
5.2.26
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