Compressed air products

Isolation valves, drain traps and ancillaries

Safety information

Pressure

Before attempting any maintenance of the trap, consider what

is or may have been in the pipeline. Ensure that any pressure is

isolated upstream and downstream of the trap and safely vented

to atmospheric pressure before attempting to maintain the trap.

This is easily achieved by fitting Spirax Sarco depressurisation

valves type DV (see separate literature for details). Do not assume

that the system is depressurised even when a pressure gauge

indicates zero.

Allow time for temperature to normalise after isolation to avoid the

danger of burns and consider whether protective clothing (including

safety glasses) is required.

Installation

The air and gas trap must always be

fitted with the inlet at the top

so that the float mechanism is rising and falling in a vertical plane.

The high point of the cover is provided with

1⁄2" tapping for a

balance pipe which is essential for satisfactory operation. From the

tapping provided at the high point of the cover a balance pipe having

a continuous rise must be fitted and connected into the space being

drained.

Maintenance

How to fit the main valve assembly

Isolate, undo cover bolts, remove existing mechanism.

Using a little jointing paste on the thread and gasket,

fit the new valve

seat to the body.

Attach the support frame, and pivot frame to the body with assembly

set screws, but do not tighten.

Fit the float arm to the pivot frame using the pin and by moving the

complete assembly centre the valve head onto the seat orifice.

Hold the assembly

firmly in place and tighten up set screws to the

recommended tightening torque.

Check operation by raising and lowering the float several times

making sure that the valve head is centring properly on the seat.

Make sure all joint faces are clean, apply a thin coating of jointing

paste to seat threads.

Tighten cover bolts uniformly to the recommended tightening torque.

Open up isolating valve slowly.

Disposal

The 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 3⁄4" screwed BSP CA10S drain trap with

cast iron body and cover.

Dimensions / weight (approximate) in mm and kg

Size

A

B

C

D

E

F

G Weight

3⁄4"

60

111 77

195

165

217

50

6.8

D

A

Temperature

G

F

E

B

C

Withdrawal distance

CA10S Air and Gas Trap

TI-P148-15 ST Issue 4

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

Gasket set (packet of 3 sets)

Always order spares by using the description given in the column

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

Example: 1 off main valve assembly for 3⁄4" Spirax Sarco CA10S air

and gas trap.

Recommended tightening torques

Item

Nm

5, 6, 7, 8 +12, 14, 15, 16

3, 6

How to order spares

or

mm

17

M10 x 30

17

M12 x 8

Cheesehead

M5 x 20

2

5

7

29 - 32

50 - 55

2.5 - 2.8

2

3 6 5 9

10 11

7 8 + 12

Main valve assembly with float

9.5.8