ARI-CONA®All-in-one AWH

Bimetallic steam trap with flanges and integrated inlet and outlet valves

Description

Application:	For discharge of condensate with limited sub-cooling
Medium:	Steam, condensate, etc.

Scope of applications
CONA All-in-one steam traps are used for “condensate-discharge from all kinds of steam systems”.

The information complies to the Pressure Equipment Directive 2014/68/EU.
It is the responsibility of the machine planner to ensure compliance.
The special markings on the valve must be taken into account.
Refer to the catalogue sheet to see which materials are used in standard versions.
Please contact the supplier or the manufacturer if you have any questions.

Operating principles

(refer to Fig. 1 – Fig. 2)
The product concept is based on a robust modular design with integrated shut-off valves (ball / seat chamfer).
This modular design can be used as the basis for steam traps with several control systems.
– Bimetallic steam trap series 60A
– Thermostatic steam trap series 61A
– Thermodynamic stam traps series 64A
– Ball float steam traps series 63A

The valve is based on a hard-sealing (metal on metal) construction:
– body (pos. 1) / screw fitting (pos. 15)
– seat (pos. 3) / body (pos. 1)
– valve plug (pos. 4) / seat (pos. 3)
– safety back-sealing mechanism
Stop valve with gland packing: spindle (pos. 11) / screw fitting (pos. 15)
Stop valve with bellows seal: spindle (pos. 11) / spindle guide (pos. 16)

There are also graphite rings (pos. 5 / pos. 10) which take over external sealing in the position between “OPEN” or “SHUT”.

Valve position:
OPEN – Safety back-sealing mechanism effective when valve fully open.
SHUT – Valve plug (pos. 4) / chamfer at seat (Pos 3) seal effective.

Bimetallic steam trap series 60A

(refer to Fig. 3 page 2-7)
(for particular description of the control system, refer to the Operating and installation
instruction of CONA B series 600 For regulation the steam trap uses both condensate temperature as well as available upstream pressure and back pressure.
As the temperature of the medium rises the bimetallic plates arch, automatically reducing valve lift.
An intermediately mounted compression spring also influences valve lift in the lower pressure range, so that when acting together with the bimetallic plates the controller always opens and closes a few degrees below the upstream pressure boiling temperature.
A pendulum-form support for the valve spindle ensures consistent operation, irrespective of the position in which the steam trap is mounted.
The steam trap vents air automatically during system start-up and operation.
The steam trap has a corrosion-resistant, water hammer-proof bimetallic controller, nonreturn protection, and a factory setting for average condensate sub-cooling of approx. 15K
(PN16-40).
The built-in controller is marked on the type plate as well as on the securing component.

Thermostatic steam trap series 61A

(refer to Fig. 4 page 2-7)
(for particular description of the control system, refer to the Operating and installation
instruction of CONA M series 610)
The steam trap uses the condensate temperature and available upstream pressure for
control.
It vents automatically during system start-up and operation.
It has a corrosionresistant, water hammer-proof diaphragm capsule which always discharges the
consistently supercooled condensate a few degrees below the upstream pressuredependent boiling temperature.

Thermodynamic stam traps series 64A

(refer to Fig. 4 page 2-7)
(for particular description of the control system, refer to the Operating and installation
instruction of CONA TD series 640)
For control the steam trap uses the condensate temperature as well as the available
upstream pressure and back pressure.
In the controller (pos. 24) the valve plate is enclosed by the cap and the seat.
When the boiling temperature of the medium is reached, a cushion of steam forms over the valve plate and presses the valve plate onto the seal faces of the seat.
To a very great extent the external sealing cap (pos. 6) frees the steam trap (in PN40) from
environmental influences.
The steam cushion collapses as a result of condensate formation and the associated temperature drop.
The system pressure lifts the valve plate from the seat face.
The steam trap opens and removes condensate.
The steam trap vents air automatically during system start-up and operation, but with a time
lag.
The steam trap acts as a non-return valve.

Ball float steam traps series 63A

(refer to Fig. 6 page 2-7 and Fig. 10 page 2-16)
(for particular description of the control system, refer to the Operating and installation
instruction of CONA SC series 634)
The steam trap is controlled by a swivel-mounted ball float (pos. 24.16).
If condensate is flowing towards the steam trap, the ball float (pos. 24.16) rises and opens
the discharge valve using the lever mechanism.
An intercoupled diaphragm capsule (pos. 24.17) ensures automatic start-up air venting
when cold.
If the amount of condensate decreases or if there is no condensate, the float ball
(pos. 24.16) falls and shuts the discharge valve.
The compact float ball (pos. 24.16) exerts level-dependent control on the valve ball
(pos. 24.4) by means of a lever mechanism.
As the level of condensate rises, the valve ball
(pos. 24.4) is rolled off the valve bore by the lever mechanism, thus opening the valve. The
condensate can now drain away.
If the amount of inflowing condensate is less than the possible valve output or if there is no condensate flow, the ball float (pos. 24.16) falls and the valve ball (pos. 24.4) rolls back onto the valve bore.
The valve is now closed.