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Zero pressure regulator FRN Dungs

Zero pressure regulator FRN
  • These pressure regulators FRN have an internal tap of regulator output pressure and external pulse and blower pressure connections.
  • Input pressure up to 50 mbar (5 kPa).
  • High flow rate.
  • FRN has an adjustable setpoint spring which can be exchanged for different ranges.
  • Sturdy, precise and sensitive regulation of input pressure (response pressure).
  • The pressure regulator complies with EN 88 and DIN 3380.
  • It does not contain any non-ferrous metals and is suitable for gases of up to max. 0.1% H2S. Suitable for gases of families 1, 2, 3 and other neutral gaseous media.
  • The FRN series is no longer part of the Dungs product line and has been replaced by the FRNG series.


Technical specifications FRN zero pressure regulator

Regulator type Code DN / Rp Max. operating pressure pmax (mbar) Inlet pressure range p1 (mbar) Outlet pressure range p2 (mbar) Working temperature (0C)
FRN 515 103044 Rp 1 1/2 500 7.5 ÷ 50 -3 ÷ 5 -15 ÷ 70
FRN 520 101287 Rp 2
FRN 5040 244124 DN 40
FRN 5050 241746 DN 50
FRN 5065 241755 DN 65
FRN 5080 241757 DN 80
FRN 5100 241760 DN 100


Dimensions FRN pressure regulator (mm)

dimensions FRN

 

Regulator type a b c d e f g h i j Weight (kg)
FRN 515 150 195 40 285 G 1/2 G 1/4 G 1/4 395 G 1/2 G 1/8 4.0
FRN 520 170 250 47 345 480 6.0
FRN 5040 200 200 75 315 430 5.0
FRN 5050 230 230 82.5 375 510 7.5
FRN 5065 290 290 92.5 440 620 10.5
FRN 5080 310 310 100 440 620 13.0
FRN 5100 350 350 110 535 800 20.0


Application example - Zero pressure regulator FRN

Application example FRN
The adjustment spring acts against the force due to weight of moving parts. The force due to weight is compensated as a factor of pretension of the adjustment spring.
The chamber between the working diaphragms must be connected with atmosphere (ventilation pipe).
A pressure compensation line (pulse) may be connected to the regulator dome.
Diagram zero pressure regulator FRN


Adjustment of response pressure

Setpoint adjustment FRN
Factory setting, standard spring: p2 -3 ÷ 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 FRN Dungs

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


Prices zero pressure regulators

Code Type Prices without VAT
103044 Zero pressure regulator FRN 515 0.00
101287 Zero pressure regulator FRN 520 0.00
244124 Zero pressure regulator FRN 5040 0.00
241746 Zero pressure regulator FRN 5050 0.00
241755 Zero pressure regulator FRN 5065 0.00
241757 Zero pressure regulator FRN 5080 0.00
241760 Zero pressure regulator FRNs 5100 0.00
In case the price is missing or for a list of discounts contact us directly to receive an offer.