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

Rev. 0040804002 3209 Page 3
Operating and installation instructions
CONA
®
M - Thermostatic steam traps
4.0 Description
4.1 Scope of applications
Thermostatic steam traps with thermal controller 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
The steam trap uses the condensate temperature and available upstream pressure for
control. It vents automatically during system start-up and operation. It has one (or multiple)
corrosion-resistant, water hammer-proof diaphragm capsule which always discharges the
consistently supercooled condensate a few degrees below the upstream pressure-
dependent boiling temperature.
Two capsule types are available with different discharge temperatures:
The controller designation and capsule type are stated on the type plate
Series 616 PN16 (version with pilot valve):
(see Fig. 1 page 4)
If the discharge of large amounts of condensate is required, the master valve, comprising
the seat (Pos. 3) and nozzle piston (Pos. 10), is opened using an additional mechanism
(disc piston).
To operate reliably the pilot valve needs a minimum pressure differential (
ΔP)
of 1 bar.
Series 616 PN40 (version with multi-capsule):
(see Fig. 2 page 4 - Fig. 5 page 5)
Through the parallel connection of multi membrane capsules Type B, a multiplication of the
flow capacity is achieved.
At the same time drops a strainer and a non-return protection.
We recommend a ARI Strainer Fig. 050 in front of the steam trap.
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.
Capsule Discharge temperature
No. 2 approx. 10 Kelvin below boiling temperature
No. 3 approx. 30 Kelvin below boiling temperature