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FRNG Dungs zero pressure regulator, proportional and compressed air-controlled pressure regulator

Pressure regulator FRNG
  • These pressure regulators FRNG have an adjustable setpoint spring and defined counterspring.
  • Input pressures up to 50 mbar (5 kPa) for zero pressure applications.
  • Input pressures up to 200 mbar (20kPa) for proportional pressure applications.
  • Bypass prepared: Rp 3/8 to Rp 2.
  • Sturdy, precise and sensitive regulation of regular output pressure.
  • Inlet pressure compensation diaphragms.
  • Safety diaphragms.
  • Internal pulse for regulator output pressure as standard, external pulse connection prepared.
  • Connection for blower pressure as standard.
  • Suitabile for gases of families 1, 2, 3 and other neutral gaseous media. Does not contain any non-ferrous metals, suitable for gases up to max. 0.1 vol % H2S dry.

 

Pressure regulator FRNG Rp Pressure regulator FRNG DN Pressure regulator FRNG group


Sectional drawings FRNG

Sectional drawing FRNG 1 Sectional drawing FRNG 2 Sectional drawing FRNG 3
For the images that aren't clear move the mouse over them to zoom.

FRNG
1 Housing 5 Diaphragm disk 9 Setpoint spring
2 Regulating cup 6 Working diaphragm 10 Counterspring
3 Pulse tap, internal 7 Safety diaphragm 11 Adjustment device
4 Compensation diaphragm 8 Breathing plug
Sectional drawing FRNG 4

 

FRNG
1 Housing 6 Diaphragm disk 11 Adjustment device
2 Regulating cup 7 Working diaphragm 12 Counterspring
3 Pulse tap, internal 8 Safety diaphragm 13 Option DN 125, DN 150
Measurement opening with
screw plug G 1/8
4 Compensation diaphragm 9 Breathing plug
5 External pulse 10 Setpoint spring


Technical specifications FRNG pressure regulator

Regulator type Code DN/Rp pmax - Zero governor (mbar) Range - Zero pressure regulator (mbar) pmax Air/gas ratio control 1:1 (mbar) Range - Air/gas ratio control (mbar)
FRNG 503 220967 Rp 3/8 50 -3÷5 200 -20÷100
FRNG 505 220968 Rp 1/2
FRNG 507 220969 Rp 3/4
FRNG 510 220970 Rp 1
FRNG 515 209064 Rp 1 1/2
FRNG 520 209065 Rp 2
FRNG 5040 159350 DN 40 50 -3÷5 200 -20÷100
FRNG 5050 209067 DN 50
FRNG 5065 209068 DN 65
FRNG 5080 209069 DN 80
FRNG 5100 214422 DN 100
FRNG 5125 220758 DN 125
FRNG 5150 224212 DN 150
FRNG 5125 M 241762 DN 125
FRNG 5150 M 241764 DN 150

 

Regulator type Code DN/Rp pmax - Controlled by air pressure (mbar) Range pmax - controlled by air pressure (mbar) Working temp. (0C)
FRNG 503 220967 Rp 3/8 500 350 -15÷70
FRNG 505 220968 Rp 1/2
FRNG 507 220969 Rp 3/4
FRNG 510 220970 Rp 1
FRNG 515 209064 Rp 1 1/2
FRNG 520 209065 Rp 2
FRNG 5040 159350 DN 40 500 350 -15÷70
FRNG 5050 209067 DN 50
FRNG 5065 209068 DN 65
FRNG 5080 209069 DN 80
FRNG 5100 214422 DN 100
FRNG 5125 220758 DN 125
FRNG 5150 224212 DN 150
FRNG 5125 M 241762 DN 125
FRNG 5150 M 241764 DN 150


Dimensions pressure regulator FRNG (mm)

Dimensions FRNG

 

Regulator type a b c d e f g h Weight (kg)
FRNG 503 77 115 24 143 G 1/4 G 1/4 G 1/4 225 0.60
FRNG 505 77 115 24 143 225 0.60
FRNG 507 100 130 28 165 245 1.00
FRNG 510 110 145 33 190 310 1.20
FRNG 515 150 195 40 250 G 1/2 G 1/4 G 1/4 365 2.50
FRNG 520 170 250 47 310 450 3.50
FRNG 5040 200 195 65 280 395 3.50
FRNG 5050 230 250 75 340 480 5.00
FRNG 5065 290 285 95 405 590 7.60
FRNG 5080 310 285 95 405 590 10.00
FRNG 5100 350 350 105 495 760 16.00
FRNG 5125 400 400 135 635 1000 28.00
FRNG 5150 480 480 160 780 1180 38.00


Application - Zero pressure regulator

Application Zero pressure regulator
The counterspring counteracts the setting spring and the weight force of the moving parts.
Depending on the pretension of the setting spring and the installation position, the force of the counterspring is compensated.
Diagram Zero pressure regulator


Application - Air / gas ratio control

Application gas air ratio control
The setting spring can generate an offset.
If the ratio is adjusted to 1:1 during maximum fan pressure pL, a gas excess (gas advance) results in partial load.
If the ratio is adjusted to 1:1 in a partial load point, an air excess results at full load (air advance).
The deviation of the original straight line (100%) is approximately +/- 5%.
Diagram air gas ratio control


Application - Controlled by air pressure

Application Controlled by air pressure
In connection with a selected setting spring, the regulator outlet pressure can be controlled depending on a fan pressure (air pressure). The pretension of the setting spring is added to the fan pressure. The maximum regulator output pressure is: p2 max = 350 mbar.
The connection of the fan pressure line must withstand the occurring stresses and must be permanent. The pressurised air must be dust-free and dry and must not retain any contamination. The maximum fan pressure is: pL max = 150 mbar.
Diagram Controlled by air pressure


FRNG spring selection

Spring colour Brown White Orange Blue Red Yellow Black Pink Grey
Pressure range (mbar) 2.5÷9 5÷13 5÷20 10÷30 25÷55 30÷70 60÷110 100÷150 140÷200
FRNG 503 229817 229818 229820 229821 229822 229823 229824 229825 229826
FRNG 505 229817 229818 229820 229821 229822 229823 229824 229825 229826
FRNG 507 229833 229834 229835 229836 229837 229838 229839 229840 229841
FRNG 510 229842 229843 229844 229845 229846 229847 229848 229849 229850
FRNG 515 229851 229852 229853 229854 229869 229870 229871 229872 229873
FRNG 520 229874 229875 229876 229877 229878 229879 229880 229881 229882
FRNG 5040 229851 229852 229853 229854 229869 229870 229871 229872 229873
FRNG 5050 229874 229875 229876 229877 229878 229879 229880 229881 229882
FRNG 5065 229883 229884 229885 229886 229887 229888 229889 229890 229891
FRNG 5080 229883 229884 229885 229886 229887 229888 229889 229890 229891
FRNG 5100 229892 229893 229894 229895 229896 229897 229898 229899 229900
FRNG 5125 229901 229902 229903 229904 229905 229906 229907 229908 243416
FRNG 5150 229909 229910 229911 229912 229913 229914 229915 229916 243417
The standard version is equipped with a blue spring.


Setting the response pressure

Setpoint adjustment FRNG
Factory setting: Standard spring p2: 2.5 - 9 mbar. Sealing force of counterspring in closed position: standard offset 5 mbar.
1) Unscrew protective cap A
2) Adjustment (+) - Setting spindle B "turn clockwise" = increasing response pressure (setpoint) OR
3) Adjustment (-) - Setting spindle B "turn counter-clockwise" = reducing response pressure (setpoint)
4) Check setpoint
5) Screw on protective cap A
6) Attach lead seal


Flow diagram FRNG Dungs

Flow diagram FRNG
- For more drawings or details access the operation manual.
For the images that aren't clear move the mouse over them to zoom.


Prices pressure regulators

Code Type Prices without VAT
220967 Gas pressure regulator FRNG 503 0.00
220968 Gas pressure regulator FRNG 505 0.00
220969 Gas pressure regulator FRNG 507 0.00
220970 Gas pressure regulator FRNG 510 0.00
209064 Gas pressure regulator FRNG 515 0.00
209065 Gas pressure regulator FRNG 520 0.00
159350 Gas pressure regulator FRNG 5040 0.00
209067 Gas pressure regulator FRNG 5050 0.00
209068 Gas pressure regulator FRNG 5065 0.00
209069 Gas pressure regulator FRNG 5080 0.00
214422 Gas pressure regulator FRNG 5100 0.00
220758 Gas pressure regulator FRNG 5125 0.00
224212 Gas pressure regulator FRNG 5150 0.00
241762 Gas pressure regulator FRNG 5125 M 0.00
241764 Gas pressure regulator FRNG 5150 M 0.00
In case the price is missing or for a list of discounts contact us directly to receive an offer.