Pressure/temperature limits

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Steam

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saturation

curve

1

8

9

4

Materials

No. Part

1

Body

2

Cover

3

Cover gasket

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Pressure bar g

The product must not be used in this region.

The product should not be used in this region or beyond

its operating range as damage to the internals may occur.

Material

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO

Maximum operating pressure

for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

PN40

40 bar g @ 120°C

350°C @ 28 bar g

-10°C

32 bar g

287°C @ 32 bar g

SG iron

SG iron

Reinforced exfoliated graphite

0°C

Note: For lower operating temperatures consult Spirax Sarco

X 105 CrMo 17

(1.4125)

X 22 CrNi 17 2

(1.4057)

X 22 CrNi 17 2

(1.4057)

DPMX Maximum differential pressures

See overleaf

Designed for a maximum cold hydraulic test pressure of 60 bar g

Caution: The trap in its complete operational form must not be

subjected to a pressure of greater than 48 bar otherwise damage to

the internal mechanism may result.

DN40 - DN50

9

Main valve gasket

Stainless steel

Exfoliated graphite

Steam traps

Ball float

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

© Copyright 2013

FT57

SG Iron

Ball Float Steam Trap with Flanged Connections

Description

The FT57 is an SG iron ball float steam trap with internal thermostatic

air vent for the prompt removal of large condensate loads from

steam systems. The trap is supplied with integrally flanged

connections (for horizontal or vertical installation) and can be

maintained without disturbing the pipework. Body and cover

are produced by TÜV approved foundries. For further information

see TI-P603-05.

Available options: FT57H - Horizontal flow. FT57V - Vertical flow.

Standards

DN15 FT57V

1

5

2

10

6

3

Optional

Steam lock release

2

11

7

3

DN40 FT57H

These products fully compy with the requirements of the European

Pressure Equipment Directive 97/23/EC and carries the mark

when so required.

This product is available with certification to EN 10204 3.1.

Note: All certification / inspection requirements must be stated at

the time of order placement.

Sizes and pipe connections

5.5.103

DN15, DN20, DN25, DN40 and DN50.

Standard flange EN 1092 PN40 (formerly DIN 2501).

Face-to-face dimensions to BS EN 26554 Series 1.

Optional extras

Manually adjustable needle valve (designated 'C' on the

nomenclature) can be fitted to all versions. This option provides

a steam lock release feature in addition to the standard air vent.

The cover can be drilled and tapped for the purpose of fitting a

balance line and drain cock if requested at the point of order.

Certification

Cover bolts

4

Cover studs

Cover nuts

5

Valve seat

6

Valve

7

Valve seat

8

Valve

FT57H

FT57V

FT57V

DN15 - DN25

DN15 - DN25

DN40 - DN50

Steel

Steel

Steel

10

Ball float

11

Stainless steel

X 5 CrNi 18 10

(1.4301)

4

Note: All other internals are manufactured in stainless steel.

TI-P603-02

ST Issue 4

T

e

m

p

e

r

a

t

u

r

e

°

C

EN-GJS-400-18U-LT

EN-GJS-400-18U-LT

24 CrMo 5 (1.7258)

24 CrMo 5 (1.7258)

CK 35 (1.1181)

X 22 CrNi 17 2

Stainless steel

Stainless steel

Stainless steel

(1.4057)