© 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
D
E
A
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
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