ARI Armaturen CONA S PN40 EN - Manual (Page 3)

Rev. 0040805002 1404 Page 3
Operating and installation instructions
CONA
®
S - Ball float steam traps
4.0 Description
4.1 Scope of application
Float-type steam traps with level control are used for the drainage of systems with
compressed air or aqueous gases.
The information complies to the Pressure Equipment Directive 97/23/EC.
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.
4.2 Operating principles
(refer to Fig. 5 page 10)
The steam trap is controlled by a swivel-mounted ball float (Pos. 24.16). If condensate is
flowing into the steam trap, the ball float (Pos. 24.16) floats up and opens the discharge
valve via a lever mechanism. Once the valve is open, the differential pressure between the
steam and condensate systems forces the condensate out through the valve.
If the amount of condensate decreases or if there is no condensate, the ball float
(Pos. 24.16) falls and shuts the discharge valve.
The valve ball (Pos. 24.4) also works with the seat (Pos. 24.1) as a non-return valve.
The condensate must be able to flow towards the valve at a constant gradient. If there is a
possibility that the trap could be air locked, a pressure compensation line must be led back
to the system from the top of the hood to guarantee safe functioning of the controller (see
Fig. 4).
ATTENTION !
- Refer to the data sheet for applications, limits on use and possibilities.
- Certain media require or preclude the use of special materials.
- The valves are designed for standard operating conditions. If conditions exceed
these requirements, e.g. aggressive or abrasive media, the operator should
state the higher requirements when ordering.
- Valves made from grey cast iron are not authorised for use in systems subject
to TRD 110.