Pressure Regulator 133 / 233 - Peppas Ltd Combustion - energy ...

Pressure Regulator
133 / 233
Over-pressure function
When the outlet pressure of a gas
pressure regulator reaches an
inadmissible value, the increased
pressure is also transmitted through
the pulse bore (13) to the comparator
(9) of the SSV.
When the force below the comparator
(9) reaches the force of the load
spring (10) against over-pressure, the
comparator (9) with the lever system
(11) (for SSV with upper switching
point) and with the guide bush (28)
(for SSV with upper and lower
switching points) is pushed upwards.
The lever system (11) is released so
that the force of the closing spring
(14) is set free, and the valve disk (12)
is pushed against the orifice (7).
Under-pressure function
When the outlet pressure of the
regulator falls to such a degree that
the force below the comparator (9)
becomes smaller than the force of the
spring for under-pressure (30), the
load spring (30) pushes the
comparator downwards.
(Against over-pressure (10), the load
spring is mounted with the guide bush
(28) at the retention shoulder (32)).
The lever system is released so that
the force of the closing spring (14) is
also released and the valve disk (12)
is pushed against the orifice.
Commissioning
The SSV is commissioned by pulling
out the valve rod (26) and engaging
the lever system (11). However, the
SSV with upper and lower shut-off
require that the pressure below the
comparator (9) lies above the lower
switching pressure against underpressure,
and below the switching
pressure against over-pressure, so
that the lever (11) touches the arm
(33) of the rocking lever (34).
The cap (35) and the valve rod (26)
are equipped with threads.
Consequently, a slight resetting of the
valve rod is possible.
with upper
switching point
P so ≥ 400 mbar
3
6
4
7
5 13
14
12
34
36
11
10
9
32
33
12
limit of lift for
upper shutoff
14
34 36 11 26 35
with lower
and upper
switching points
10
30
28
9
Schlumberger reserves the right to change these specifications without prior notice — EU - GA - 00026.0 - GB - 12.00
For further information, please contact your local Schlumberger representative.
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