Spirax Sarco FT 43 Series User manual

Spirax Sarco
Brand
Spirax Sarco
Model
FT 43 Series
Type
User manual

Spirax Sarco FT 43 Series

The Spirax Sarco FT 43 Series is a cast iron ball float steam trap with an integral automatic air venting facility. It is available with horizontal flanged connections as well as vertical flanged connections. The FT 43 Series is suitable for use in a variety of applications, including:

  • Steam heating systems
  • Condensate return systems
  • Process steam systems

The FT 43 Series is designed to provide efficient condensate removal and air venting, while minimizing steam loss. The ball float mechanism ensures that the trap remains closed when there is no condensate present, and opens to discharge condensate when the float rises. The automatic air vent allows air to be discharged from the trap, preventing air binding and ensuring efficient operation.

Spirax Sarco FT 43 Series

The Spirax Sarco FT 43 Series is a cast iron ball float steam trap with an integral automatic air venting facility. It is available with horizontal flanged connections as well as vertical flanged connections. The FT 43 Series is suitable for use in a variety of applications, including:

  • Steam heating systems
  • Condensate return systems
  • Process steam systems

The FT 43 Series is designed to provide efficient condensate removal and air venting, while minimizing steam loss. The ball float mechanism ensures that the trap remains closed when there is no condensate present, and opens to discharge condensate when the float rises. The automatic air vent allows air to be discharged from the trap, preventing air binding and ensuring efficient operation.

© SPIRAX SARCO
TIS 2.309.2 CHe
06.08
Catalogue section 1.2
Indications of pressures in bar g, dimensions in mm
Subject to modifications
Ball Float Steam Trap FT 43
Cast Iron EN-JL1040
PN 16, DN 25
Description
Cast iron ball float steam trap with integral automatic air venting
facility. It is available with horizontal flanged connections as well as
vertical flanged connections.
Available types
FT43H, for horizontal installation with automatic airvent.
FT43V, for vertical installation with automativ airvent.
Other types see overleaf and on request.
Sizes and pipe connections
DN 25, standard flange to DIN 2501, PN16, flange surface to DIN
2526 form C, distance between flanges to DIN3548 short.
DN 15, 20 and 40 - 50, see separate data sheet.
Other types on request.
Limiting conditions
Nominal pressure: PN 16
Max. operating pressure (PMO): 13 bar
Type max. differential max. operating
Pressure range pressure ΔP temperature (TMO)
FT 43 - 4.5 0 ... 4.5 bar 200 °C
FT 43 - 10 0 ... 10 bar 200 °C
FT 43 - 14 0 ... 14 bar 200 °C
Materials
No. Part Material DIN Mat.-Nr.
1 Body Cast iron EN-JL1040
2 Bolts and Nuts Steel M10 x 30 8.8 / 8
3 Cover gasket Nickel reinforced exfoliated graphite
4 Cover Cast iron EN-JL1040
5 Valve seat Stainless steel 1.4057
6 Valve seat gasket Stainless steel 1.4306
7 Screws Stainless steel M5 x 20 1.4057
8 Ball float with lever Stainless steel 1.4301
9 Airvent Stainless steel 1.4057
11 SLR Assembly (C) Stainless steel 1.4057
12 SLR Gasket Steel 1.0065
13 SLR Seal Graphite
14 Support frame Stainless steel 1.4301
15 Pivot frame Stainless steel 1.4301
16 Pivot Stainless steel 1.4057
17 Erosion deflector Stainless steel 1.4057
Dimensions
Size Dimensions Weight
DN A B C D E kg
25 160 110 80 245 160 8.3
Installation
Traps for horizontal (H) connection must be fitted in horizontal pipe
lines; traps for vertical (V) connection must be fitted in vertical pipe
lines. In any case, the trap must be fitted with the float arm in a
horizontal plane so that it rises and falls vertically; therefore the
arrow on the nameplate must point downwards. Flow of the fluid
according the arrow casted on the body.
Capacities
Condensate kg/h
Condensate kg/s
A
DEA
B
Withdrawal
Distance
Differential pressure bar
FT 43H-TV
with automatic airvent (TV)
How to specify
SPIRAX SARCO cast iron float trap with integral automatic air vent
type, PN 16, DN 25, specify: installation (H or V), max. operating
(steam) pressure.
C
3
17
4
8
9
5
7
1
2
6
14
15
16
100
200
400
600
800
1000
2000
0.03
0.07
0.1
0.2
0.4
0.7
0.05
1247100.70.20.1 0.4 15
3000
FT 43 - 4.5
FT 43 - 14
FT 43 - 10
FT432CHe.P65
TIS 2.309.2 CHe
SPIRAX SARCO AG Gustav-Maurer-Str. 9 CH-8702 Zollikon ZH
Telephone 044 396 80 00 Telefax 044 396 80 10 www.SpiraxSarco.ch
Optional extras
As an alternative the ball float steam traps with automatic airvent
(TV) can be supplied with an additional manually adjustable needle
valve (C) for applications where traps are subject to steam locking.
Type designation FT43-C (combined).
Other types
Flanged Ball Float Steam Traps in Cast iron, SG iron, Cast steel and
Stainless steel, see separate Data sheets.
How to fit main valve assembly
Unscrew support, pivot frame and valve seat. Using a little jointing
paste on the thread and gasket, fit the valve seat to the body.
Attach the support frame E and pivot frame F to the body with
assembly set screws D but do not tighten.
Fit the float arm C to the pivot frame F using the pin G and, by moving
the complete assembly, centre the valve head onto the seat orifice.
Tighten the assembly set screws D.
How to fit air vent assembly (TV) 0-21 bar
Remove spring clip, element, spacer plate and unscrew seat. Screw
in new seat and assemble spacer plate and element, making sure
the 3 raised peaks on the spacer plate are facing the element.
Servicing
With suitable isolation, repairs can be carried out with the trap in the
line. When reassembling make sure that all joint faces are clean and
the dowel locates in the cover.
Spare parts
Main valve assembly with float 4.5 bar A, B, C, D, E, F, G
Main valve assembly with float 10 bar A, B, C, D, E, F, G
Main valve assembly with float 14 bar A, B, C, D, E, F, G
Air vent assembly (TV) H, J, L, M, N
Steam lock release unit (C) O, P, R, S
Three complete sets of gaskets B, P, R, T
Set of cover bolts and nuts U
Always order spares by using the description given in the column
headed and stating the type and size of the trap.
The spare parts available are shown in heavy outline. Parts drawn
in broken line are not supplied as spares.
Tightening torques
Part Wrench Bolt size Torque
size Nm
Cover bolts U 17 M10 x 30 33
Bypass valve O 22 40-45
Air vent J 17 50-55
Valve seat A 17 50-55
Main valve
assembly bolts D M5 x 20 2.5-2.8
A
SW 17 (35/40 Nm)
SW 21 (40/45 Nm)
12
Airvent Assembly TV
Bypass-Assembly (C)
Main Valve Assembly
SW 17 (29/33 Nm)
O
P
RS
N
MH
J
TB
GEFD
U
FT 43 C
13
11
L
Classification according to the Pressure Equipment
Directive 97/23/EC
Application: Fluids of group 2 only
Dimension Category CE Marking
DN 25 SEP Art.3, par.3,
Sound Engineering Practices
CE marking not allowed
  • Page 1 1
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Spirax Sarco FT 43 Series User manual

Spirax Sarco
Brand
Spirax Sarco
Model
FT 43 Series
Type
User manual

Spirax Sarco FT 43 Series

The Spirax Sarco FT 43 Series is a cast iron ball float steam trap with an integral automatic air venting facility. It is available with horizontal flanged connections as well as vertical flanged connections. The FT 43 Series is suitable for use in a variety of applications, including:

  • Steam heating systems
  • Condensate return systems
  • Process steam systems

The FT 43 Series is designed to provide efficient condensate removal and air venting, while minimizing steam loss. The ball float mechanism ensures that the trap remains closed when there is no condensate present, and opens to discharge condensate when the float rises. The automatic air vent allows air to be discharged from the trap, preventing air binding and ensuring efficient operation.

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