Steam traps

Fixed temperature discharge

Dimensions/weight (approximate) in mm and kg

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P084-02) supplied with the product.

The FT12 is designed for installation in a horizontal plane. Suitable

isolation valves must be installed to allow for safe maintenance and

trap replacement. A typical installation is shown on the left.

Warning: The body / cover gasket contains a thin stainless

steel support ring, which may cause physical injury if it is not

handled and disposed of carefully.

Disposal

This product is recyclable. No ecological hazard is anticipated with

the disposal of this product providing due care is taken.

How to order

Example: 1 off Spirax Sarco DN150 FT12-B cast iron float/orifice

trap having PN16 flanged connections.

Spare parts

The spare parts available are shown in heavy outline. Parts drawn

in broken line are not supplied as spares.

Trap

FT12

A

340

B

C

240

240

Weight

82

BSA1

It is important that the FT12 is sized correctly to the running load of

the plant being drained. See 'Capacities - How to select / size the

trap' for full details.

The fixed orifice (available in four different cross sectional areas A,

B, C, or D) will pass a set amount of condensate at any given

differential pressure consquently it is important that loads are constant.

If the condensate load drops below the minimum value shown then

steam will also pass through the trap. A separate float trap mechanism

provides additional capacity should the condensate level increase

up to the maximum values shown on the graph. Correct sizing will

ensure that the plant condensate flow is between the minimum and

maximum flowrates shown.

2

3

BSA1

Typical installation

Fig 33

A

B

C

FT12

SDCV3

Trap operation

Available spares

Main valve assembly with float

Orifice plate (state A, B, C or D)

Set of body gaskets (packet of 3)

Set of body nuts and bolts

Always order spares by using the description given in the column

headed 'Available spares' and state the size and type of trap.

Example: 1 - Main valve assembly for a DN150 FT12-D cast iron

float / orifice trap.

9

8

2

4, 5, 6, 7, 8

8, 9

3

2

How to order spares

7

4

6

5

Main valve assembly

Recommended tightening torques

Item

Nm

or

mm

32 A/F

M22 x 90

2

6

9

160 - 180

20 - 24

20 - 24

M8 x 20

M8 x 20

FT12 Cast Iron Float/Orifice Trap for High Capacity Applications

TI-P084-01 ST Issue 7

5.4.4