SPENCE FTE Series Float and Thermostatic Steam Trap Installation Guide
- June 9, 2024
- SPENCE
Table of Contents
SPENCE FTE Series Float and Thermostatic Steam Trap
Spence FTE Series Float and Thermostatic Steam Trap
Introduction
This installation sheet covers the installation and maintenance of FTE Series Float and Thermostatic Steam Trap.
Product Description
The FTE Series ball float traps are fitted with an integral balanced pressure
type thermostatic air went.
The FTE Series is available with horizontal in line connections. However, in
case of FTE-14 sizes NPS 1/2 and 3/4 / DN 15 and 20, the position of body can
be changed to suit different flow directions like left to right, top to bottom
or right to left. A steam lock
release (SLR) option is available to FTE Series Traps.
Specifications
-
Available Configurations
See Table 1 -
End Connection Styles
NPT, CL125, CL150, CL300, CL600,
DIN 10, 16, 25 or 40 and BS10 – F, H, J, K or R Maximum Operating Pressure(1)
See Table 2 -
Maximum Operating Temperature(1)
Saturated at pressure -
Maximum Allowable Pressure(1)
Cast iron and Ductile iron: 232 psig / 16 bar Cast steel: 465 psig / 32 bar -
Maximum Allowable Temperature(1)
Cast iron and Ductile iron: 450ºF / 232ºC Cast steel: 850ºF / 454ºC -
Materials of Construction
Body and Cover: Cast iron, Ductile iron and Cast steel
Valve, Valve Seat, Float, Lever Assembly,
Thermostatic Airvent and Housing:
Stainless steel
Cover Bolts: Carbon steel
Installation
WARNING
Personal injury, property damage, equipment damage or leakage due to escaping
steam or bursting of pressure containing parts may result if this equipment is
over pressured or is installed where service conditions could exceed the
limits given in the specifications or where conditions exceed any ratings of
the adjacent piping or piping connections. To avoid such injury or damage,
provide pressure-relieving or pressure-limiting devices (as required by the
appropriate code, regulation, or standard) to prevent service conditions from
exceeding those limits.
The maximum differential pressure (ΔP) stamped on product name plate must be
greater than the maximum pressure differential across the trap.
Table 1. FTE Series Available Configurations
BODY MATERIAL| TYPE (1)| OPERATING PRESSURE|
END CONNECTION
---|---|---|---
__
Cast iron
| FTE-10| To 200 psig / 14.0 bar| Threaded
FTE-43| To 200 psig / 14.0 bar| Flanged
__
Ductile iron
| FTE-14| To 200 psig / 14.0 bar| Threaded
FTE-43| To 200 psig / 14.0 bar| Flanged
__
Cast steel
| FTE-44| To 465 psig / 32 bar| Threaded or Socket Weld
FTE-44F| To 465 psig / 32 bar| Flanged
1. Add “S” to end of Type for SLR.
Table 2. FTE Series Maximum Operating Pressure
__
__
TYPE
| __
INLET SIZE
| MAXIMUM OPERATING PRESSURE, psig / bar
---|---|---
65 / 4.5| 145 / 10| 200 / 14| 300 / 21|
465 / 32
NPS| DN| In.| mm| In.| mm| In.| mm|
In.| mm| In.| mm
__
__
__
__
FTE-10 and FTE-43
| __
1/2 and 3/4
| __
15 and 20
| __
0.141
| __
3.57
| __
0.094
| __
2.38
| __
0.079
| __
2
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
1
| __
25
| __
0.256
| __
6.5
| __
0.197
| __
5
| __
0.157
| __
4
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
1-1/2
| __
40
| __
0.689
| __
17.5
| __
0.65
| __
16.5
| __
0.531
| __
13.5
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
2
| __
50
| __
1.063
| __
27
| __
0.811
| __
20.6
| __
0.657
| __
16.7
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
__
FTE-14
| __
1/2 and 3/4
| __
15 and 20
| __
0.141
| __
3.57
| __
0.094
| __
2.38
| __
0.079
| __
2
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
1
| __
25
| __
0.185
| __
4.7
| __
0.126
| __
3.2
| __
0.106
| __
2.7
| __
– – – –
| __
– – – –
| __
– – – –
| __
– – – –
__
__
__
__
FTE-44 and FTE-44F
| __
1/2 and 3/4
| __
15 and 20
| __
0.16
| __
4.07
| __
0.107
| __
2.73
| __
0.091
| __
2.3
| __
0.075
| __
1.9
| __
0.059
| __
1.5
__
1
| __
25
| __
0.256
| __
6.5
| __
0.197
| __
5
| __
0.157
| __
4
| __
0.13
| __
3.3
| __
0.118
| __
3
__
1-1/2
| __
40
| __
0.689
| __
17.5
| __
0.65
| __
16.5
| __
0.531
| __
13.5
| __
0.531
| __
13.5
| __
0.531
| __
13.5
__
2
| __
50
| __
1.063
| __
27
| __
0.811
| __
20.6
| __
0.657
| __
16.7
| __
0.657
| __
16.7
| __
0.657
| __
16.7
-
Install trap in an accessible position and location for easy servicing.
-
Ensure that the float direction of the trap is positioned downward during installation. Install trap straight, plumb and in a level position to ensure proper orientation.
Note
Arrow cast on the trap indicates the flow direction while the arrow on the nameplate indicates the float direction while closing the trap. See Figure 2. -
Install below and close to equipment being drained. Avoid long lengths of horizontal piping ahead of trap.
-
Pitch all horizontal inlet lines towards the stream trap to help eliminate potential water hammer problems.
-
Provide a dirt pocket and strainer (with blow down) ahead of trap.
-
Install union fittings and shut off valves on both sides of trap for ease of servicing and trap testing.
-
Install a test valve in outlet pipe and cap it. This allows trap to be tested. Cap is used as safety precaution when unit is not being tested.
-
Blowdown piping using full steam pressure for (5) five minutes prior to service. This cleaning process removes debris from piping.
-
Perform maintenance and cleaning 2 to 3days after startup until system is clean. Then perform maintenance 6 to 12 months once in normal operation.
Figure 1. FTE Series Installation Schematic 
Figure 2. FTE Series with Flow Direction Arrow and Float Direction
Arrow
Maintenance
WARNING
To avoid personal injury, property damage or equipment damage caused by sudden
release of pressure or explosion of accumulated gas, do not attempt any
maintenance or disassembly without first isolating the equipment from system
pressure and relieving all internal pressure from the equipment.
While working on steam traps consider the risk of getting burned, Therefore
remember the following:
- The piping parts before and after the steam trap must be atmospheric. Therefore, switch off the steam installation and / or close the necessary valves.
- Secure the necessary valves and / or switches so that the piping parts stay atmospheric during work.
- When unscrewing pressurized piping parts hot condensate in the steam trap and steam installation can spontaneously start to boil and be given off as steam. In general the steam trap must be ‘’cold’’.
- When checked regularly and properly maintained, FTE Series Float and Thermostatic Traps provides optimum performance and long life.
- The internals of FTE Series can be replaced leaving the trap in place.
- Inspect the trap mechanism periodically and remove all dirt from working parts.
- Replace worn parts.
- The safety measures for replacing a steam trap also apply for opening the cover or body of the steam trap. Always renew the gasket after opening the steam trap.
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