Flowserve UNA 23 - Manual (Page 4)

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The equipment does not have its own potential source of ignition and is therefore not subject to the
ATEX Directive 94/9/EC. The equipment can be used in potentially explosive areas 0, 1, 2, 20, 21, 22
(1999/92/EC). The equipment is not Ex marked.
Important Notes
Usage for the intended purpose
UNA 23, UNA 25:
Use the steam traps only for the discharge of condensed steam within the admissible pressure/
temperature ratings.
Contact the factory for specific recommendations concerning the chemical resistance and suitability of
the valve material for the application in question.
UNA 26, UNA 26h Stainless Steel, UNA 27h:
Use the steam traps only for the discharge of condensates, liquids and condensable gases in pipes.
Use the equipment only within the specified pressure and temperature ratings and check corrosion
resistance and chemical suitability for the application in question.
Danger
The steam trap is under pressure during operation.
When loosening flanged connections or sealing plugs, hot water, steam, corrosive liquids
or toxic gases may escape. This presents the danger of severe burns and scalds to the
whole body or severe cases of poisoning.
Installation and maintenance work should only be carried out when the system is
depressurized. Isolate the trap from both upstream and downstream pressure.
The steam trap becomes hot during operation. This presents the risk of severe burns to
hands and arms. Installation and maintenance work should only be carried out at room
temperatures.
Sharp edges on internals present a danger of cuts to hands. Always wear industrial
gloves for installation and maintenance work.
Safety note
The equipment must only be installed and commissioned by qualified staff.
Maintenance and service work must only be performed by adequately trained persons who have a
recognised level of competence.
PED (Pressure Equipment Directive)
The equipment fulfills the requirements of the Pressure Equipment Directive PED 97/23/EC. UNA 23
and UNA 25 for applications with fluids of group 2; UNA 26, UNA 26h stainless steel and UNA 27h for
applications with fluids of group 1 and 2.
With CE marking (apart from equipment according to section 3.3).
ATEX (Atmosphère Explosible)
Attention
The name plate indicates the technical specification of the equipment.
Do not commission or operate a steam trap without name plate.