Pipeline ancillaries

Air vents and air eliminators

Free air discharge capacity

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Differential pressure bar (x 100 = kPa)

If the temperature of the air differs from 15°C, the discharge

capacity from the graph can be corrected by multiplying it by the

289

273 + T (T is the actual temperature)

It may be assumed that the temperature of the air is the same as

the temperature of the water.

Dimensions/weight (approximate) in mm and kg

Size A

B

C

D

E

F

G

H

Weight

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P149-13) supplied with the product.

following equation:

Installation note:

The 3⁄4" AE10S high capacity automatic air vent

must always be fitted with the inlet at the bottom

so that the float mechanism is rising and falling in

a vertical plane. From the tapping provided at the

low point of the cover, a 1⁄2" balance pipe having

continuous rise towards the automatic air vent

must be fitted and connected into the inlet

pipework (as shown in the sketch) which is

essential for satisfactory operation.

Because of the way automatic air and gas vents

operate they all dribble water and liquid when

discharging air and gas. This is perfectly normal.

Spirax Sarco recommend piping the discharge to

a safe visible point or drain via an air break.

With suitable isolation, repairs can be carried out with the automatic

air vent in line.

The product is recyclable. No ecological hazard is anticipated with

disposal of this product, providing due care is taken.

How to order

Example: 1 off Spirax Sarco 3⁄4" screwed BSP AE10S high capacity

automatic air and gas vent with cast iron body and stainless steel

valve and seat.

Spare parts

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

in broken line are not supplied as spares.

Available spares

Main valve assembly with float

Three complete sets of gaskets (packet of 3 sets)

3, 6

Always order spares by using the description given in the column

headed 'Available spares' and state the size and type of automatic

air vent.

Example: 1 - Main valve assembly for a Spirax Sarco 3⁄4" AE10S

high capacity automatic air and gas vent.

Maintenance note:

Disposal

1⁄2" Balance

pipe

5, 6, 7, 8, 9, 15, 16, 17

3⁄4" 60 111 77

C

B

195 165 118

G

50

217

6.8

How to order spares

Recommended tightening torques

Item no.

2

7

5

or

mm

N m

29 - 32

2.5 - 2.8

50 - 55

17

M10 x 30

M5 x 20

17

M12 x 8

F

D

A

H

E

Withdrawal

distance

2

3 6 51516 717

Main valve assembly with float

8and9

AE10S High Capacity Automatic Air and Gas Vent for Liquid Systems

TI-P149-07 ST Issue 5

7.12.24

C

a

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a

c

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y

d

m

3

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