Technical data, Orifices (o) – Flowserve UNA 23 User Manual
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Technical Data
The trap body must not be subjected to sharp increases in pressure.
The dimensional allowances for corrosion reflect the latest state of technology.
Sizing
UNA 23h/v, UNA 25h/v, UNA 26h/v, UNA 27h
1
) Observe pressure/temp. specifications.
2
) Inlet pressure minus outlet pressure.
Orifices (O)
O 2
2
●
●
O 4
4
●
●
O 8
8
●
●
O 13
13
●
●
O 16
16
●
O 22
22
●
O 28
28
●
O 32
32
●
O 45
45
●
Max. admissible dif-
ferential pressure
1
)
2
)
∆∆∆∆∆PMX [bar]
(Seat design)
UNA 23h/v
UNA 25h/v
UNA 26h/v
UNA 26h stainless steel
UNA 27h
Corrosion Resistance
When used for its intended purpose the safe functioning of the steam trap will not be impaired by
corrosion.
Pressure / Temperature Ratings
UNA 2... without sightglass cover:
For pressure / temperature ratings see indications on trap body or name plate: pressure class
PN / Class, material number, max. temperature, max. pressure, max. differential pressure.
UNA 23h/v: max. admissible temperature: 300 °C
UNA 25h/v: max. admissible temperature: 350 °C
UNA 26h stainless steel: max. admissible temperature: 300 °C
UNA 26h/v: max. admissible temperature: 400 °C
UNA 23h/v with sightglass cover: max. admissible temperature: 240 °C
Reduced temperature limits for sightglass cover with integrated reflexion water level indicator.
If the pH value is above 9.0 and the fluid temperature exceeds 200 °C the glass will get more wear.