Steam traps

Ball float

5.5.57

or

mm

17 A/F

M10 x 30

19 A/F

M12 x 60

24 A/F

M16 x 70

M5 x 20

10 A/F

M6 x 20

13 A/F

M8 x 20

17 A/F

22 A/F

Spare parts

The spare parts available are shown in solid outline. Parts drawn in grey line are not supplied as spares.

Available spares

Main valve assembly complete with ball float (DN25 horizontal traps)*

Main valve assembly with erosion deflector (DN40 and DN50) (specify horizontal or vertical trap) **

Ball float (DN40 and DN50)

Air vent assembly

Manually adjustable needle valve and air vent assembly

Complete set of gaskets (packet of 3)

5, 6, 7, 8, 9, 10, 11

5, 6, 7, 12, 26

8

17, 18

17, 18, 19, 20, 21

3, 6, 20

* On horizontal traps the erosion deflector on the DN25 is pressed into the body during manufacture and not available as a spare.

** There is no erosion deflector on vertical traps.

How to order spares

Always order spares by using the description given in the column headed 'Available spares' and state the size and type of trap, including

pressure range and orientation i.e. horizontal or vertical connections.

Example: 1 - Air vent assembly for a Spirax Sarco DN25 FT43-4.5 ball float steam trap, with horizontal connections.

Steam lock

release assembly

19 + 21

20

2

Dowel

3

18

Air vent assembly

17

2

8

12

Main valve assembly with float (DN25)

6

11

5

9

10

7

Recommended tightening torques

Item Part

DN25

2

DN40

DN50

5

DN25

DN25

7

DN40

DN50

17

19

626

5

7

8

Main valve assembly (DN40 and 50)

(horizontal assembly shown)

Nm

29-33

60-66

80-88

50-50

2.5 - 2.8

10 - 12

20-24

50-55

50-55

Page 6 of 6

TI-S02-21 ST Issue 12

FT43 Cast Iron Ball Float Steam Trap DN25 to DN50