IM-P612-18 ST Issue 3
11
Step 4
(Fig. 9)
The snap action mechanism ensures
a rapid change from the trapping
mode to the active pumping mode.
With the motive inlet valve open, the
pressure in the APT10-2 increases
above the total back pressure and the
condensate is forced out through the
trap seat into the plant’s return system.
Step 5
(Fig. 10)
As the condensate level falls within
the main chamber, the float re-engages
the change over linkage, causing the
motive inlet to close and the
exhaust valve to open.
Step 6
(Fig. 11)
As the pressure inside the APT10-2
equalises with the condensate inlet
pressure through the open exhaust
valve, condensate re-enters via the
inlet swing check valve. At the same
time the outlet ball check valve
ensures no condensate can drain
back into the main chamber and
the trapping or pumping cycle
begins again.
Return to Step 1.
Fig. 11
Fig. 10
Fig. 9
Motive
steam
inlet
Condensate
inlet PS
Exhaust
Condensate
outlet PB
Condensate
inlet PS
Exhaust
Condensate
outlet PB
Содержание APT10-2
Страница 2: ...IM P612 18 ST Issue 3 2...
Страница 17: ...IM P612 18 ST Issue 3 17 Fig 15 2 Fig 16...
Страница 19: ...IM P612 18 ST Issue 3 19 Fig 17 17 Circlip 12...
Страница 21: ...IM P612 18 ST Issue 3 21 Fig 18 Fig 19 13 13 18 Spring retaining shaft Y 18 24...
Страница 27: ...IM P612 18 ST Issue 3 27 Fig 24 17 19 Circlip 20 16 Fig 23 13 18 Spring retaining shaft Y 24 3 x M8 bolts...
Страница 29: ...IM P612 18 ST Issue 3 29 Fig 25 13 Spring retaining shaft Y...
Страница 32: ...IM P612 18 ST Issue 3 32...
