Spirax Sarco TVA Series - Pressure and Temperature Limits

IM-P192-02 MI Issue 28
2.4 Pressure / temperature limits
Temperature °C
Pressure bar g
The product should not be used in this region due to the limitations of the software.
PMA
Maximum allowable
pressure @ 239 °C (462 °F)
Saturated steam 32 bar g (464 psi g) otherwise as
the specied ange rating
TMA Maximum allowable temperature 239 °C (462 °F)
Minimum allowable temperature 0 °C (non-freezing) (32 °F non-freezing)
PMO
Maximum
operating
pressure for
saturated
steam service
Horizontal
ow
Superheated
steam
23 bar g @ 239 °C (333 psi g @ 462 °F)
Saturated
steam
32 bar g @ 239 °C (464 psi g @ 462 °F)
Vertical
ow
Saturated
steam only
7 bar g @ 170 °C (101 psi g @ 338 °F)
Minimum operating pressure 0.6 bar g (8.7 psi g)
TMO Maximum operating temperature 239 °C (462 °F)
Minimum operating temperature 0 °C (non-freezing) (32 °F non-freezing)
Maximum electronics ambient temperature 55 °C (131 °F)
Maximum electronics humidity level 90% RH (non-condensing)
PMX
Maximum
differential
pressure
The pressure drop across the TVA owmeter at the maximum
rated ow is nominally 750 m bar (300 inches wg) for the DN50,
and 500 m bar (200 inches wg) for the DN80 and DN100
Cold hydraulic test pressure of: 52 bar g (754 psi g)
Pressure psi g
Temperature °F
*
Steam
saturation
curve