Mooney* FlowMax*
pressure reducing regulator
for natural gas pipelines
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The Mooney FlowMax regulator is a pressure
reducing regulator that offers bubble tight shutoff at all pressure differentials and full capacity
at very low differential pressures. This innovative
GE Oil & Gas design compliments the Mooney
Flowgrid* regulator. The FlowMax regulator
maximizes capacity, speed of response, and
accuracy while incorporating many of the same
original maintenance and performance features
for which the Flowgrid regulator is renowned.
Product Features
Top-entry design for ease of maintenance
One actuator for all pressure control ranges
Oversized balanced diaphragm provides
shut off force
Full portal designs for ultra high capacity
Guiding piston
Positive bubble tight shut-off at all
pressure differentials
Control range - 5 i.w.c. to 247 psig
(12 mbar to 17 bar)
Full open differential - as low as 3 psig (0.21 bar)
Quick acting two-path pilot control system
Low-volume casing (actuator)
Lightweight and compact design
Reversible plug seal
Designed for a range of applications
District regulator
Monitor, first stage, or second stage regulator
Industrial service regulator
Boiler/burner fuel gas regulator
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Designed for bubble tight shut-off at all
pressures and full capacity at very low
differential pressures.
Pressure Reducing Valve
When the downstream pressure is greater than
the set point of the pilot, the pilot is closed, resulting in equal pressure above and below the main
diaphragm. With a balancing diaphragm area
slightly larger than the seat area, the resulting
closing force, along with the force of the main
spring, forces the plug against the seat.
With an increase in demand, the outlet pressure
will begin to drop and decrease the pressure
above the main diaphragm. The drop of the outlet
pressure below the pilot set point will cause the
pilot to open. As the pilot opens, pressure increases underneath the main diaphragm faster than
pressure can bleed through the internal restrictor.
The imbalance in pressure on the main diaphragm
overcomes the spring force and the additional
closing force from the balancing diaphragm,
causing the plug to rise off the seat and satisfy
the flow demand.
Once the flow demand is satisfied and the downstream pressure begins to increase, the pressure
above the main diaphragm and in the pilot sense
cavity rises.
This causes the pilot to close. The pressure below
the main diaphragm bleeds through the internal restrictor until pressure equalizes above and
below the main diaphragm. The forces of the main
spring and the over-sized balancing diaphragm
then close the plug on the seat.
Back Pressure Valve
In a back pressure relief application (BPV) the valve
functions to maintain upstream pressure at the
pilot set point. The sense line for the control pilot is
located upstream of the regulator. The extra sense
port on the actuator is plugged for BPV pilot
configuration. The action of the pilot is the reverse
of a pressure reducing pilot, such that the pilot
opens when the upstream pressure increases
above its set point. The pilot will close when the
upstream pressure is less than its set point.
Plug
BPV Pilot Sense
Pilot Supply
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PRV Pilot Sense
Pilot Loading
for BPV
Balancing Diaphragm
Regulator Sense Line
Internal Restrictor
Inlet Pressure
Loading PressureOutlet Pressure
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Spring ColorSeries 20*
Pilot
Outlet Presure
Range
White20L5-15 i. w. c.
(12 mbar - 37 mbar)
Brown20L10-40 i. w. c.
(25 mbar - 100 mbar)
Yellow20L1-3 psig
(0.02 bar - 0.21 bar)
Orange20L2-5 psig
(0.14 bar - 0.34 bar)
Gray20L4-8 psig
(0.28 bar - 0.55 bar)
Spring ColorSeries 20
Pilot
Red203-12 psig
Cadmium2010-40 psig
Blue2025-90 psig
Purple2060-200 psig
Black20100-260 psig
Outlet Presure
Range
(0.21 bar - 0.83 bar)
(0.69 bar - 3 bar)
(2 bar - 6 bar)
(4 bar - 14 bar)
(7 bar - 18 bar)
Specifications
Body Size2” (DN 50)3” (DN 80)4” (DN 100)6” (DN 150)
End Connection
Minimum Differential
(fully open)
Maximum Inlet Pressure
Maximum Outlet Pressure
Maximum Casing Pressure
Outlet Pressures