0 description, 1 scope of application, 2 operating principles – ARI Armaturen CONA S PN160 EN User Manual
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Rev. 0040805000 4608
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 and thermal regulation are used for the drainage of
industrial steam facilities.
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
(see Fig. 7 page 12)
The steam trap is controlled by a swivel-mounted ball float (Pos. 24.16). An integral
bimetallic element (Pos. 24.6) provides automatic starting ventilation in the cold state.
At temperatures less than 90°C, the bi-metallic element holds the discharge orifice open,
allowing air and other gasses to escape. At 90°C the bi-metallic element is fully closed and
discharge is controlled only by the float mechanism (Pos. 24.16). At the higher
temperatures, air is automatically evacuated (Pos. 24.12), ejector style, with the
condensate.
If the amount of condensate decreases or if there is no condensate, the ball float (Pos.
24.16) faces and locks the valve ball (Pos. 24.4) on the seat (Pos. 24.1). If the steam trap is
acted upon only by vapour, the condensate-flooded seat (Pos. 24.1) remains shut.
The valve ball (Pos. 24.4) also works with the seat (Pos. 24.1) as a non-return valve.
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.