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Pressure regulatorFRNZero pressure regulator4.11

Technical descriptionThe DUNGS pressure regulator, type FRN, has an adjustable setpoint spring. The pressure regulator complies with EN 88 and DIN 3380.

- Input pressures up to 50 mbar (5 kPa)- Highflowrate- Sturdy, precise and sensitive regu-

lation of regulator input pressure (response pressure)

- Inlet pressure compensation dia-phragms

- Internal pulse for regulator output pressure as standard

- Rp 1/2 to Rp 2 threaded connection- DN40toDN100flangeconnection

ApplicationThe DUNGS pressure regulator, type FRN, does not contain any non-ferrous metals and is suitable for gases up to max. 0.1 vol.% H2S, dry.Suitable for gases of families 1, 2, 3 and other neutral gaseous media.

ApprovalsEC type test approval as per EC Gas Appliance Directive:FRN … CE-0085 AQ7126Approvals in other important gas con-suming countries.

PrintedinGermany•Edition02.10•N

r.214744

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Specifications

Nominal diametersPipe thread as per ISO 7/1Flange

Max. operating pressure

Pressure regulator

Input pressure range

Output pressure range

Materials of gas-conveying parts

Ambient temperature

Measuring/ignition gas connections

Pulse connection

Installation position

Measurement opening

DN 40 50 65 80 100Rp 11/2 2ConnectionflangeasperDINEN1092-1

up to 500 mbar (50 kPa)

Pressure regulator as per EN 88, Class A, Group 2

2.5 mbar or p2 + 2.50 mbar to 50 mbar

-3 mbar to +5 mbar as a factor of adjustable setpoint spring and applied air pressure (pulse)

Housing: aluminium, steelSeals and diaphragms: NBR

-15 °C to +70 °C

G 1/4 ISO 228 on both sides in inlet section

Existing internal in outlet sectionExternally prepared on housing

Regulator dome vertically downwards

G 1/8 ISO 228 in the baseplate (option DN 40 to DN 100)Reclosableopeningforsettingsystem-specificvaluaswhenthesystemisputinto operation, e. g. gas motor

Pressure tapsPulse and fan connection

1 Breathing plug: connection for compensation line

2 Breathing plug: connection for ventilation pipe (min. DN 15)

3 G 1/4 ISO 228 screw plug in input section on both sides

4 Right: G 1/4 screw plug Right: p2 instrument gland

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FRN Spring-loaded pressure regulator with adjustable setpoint spring. Internal tap of regulator output pres-sure; external pulse and blower pressure connections.

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Dimensions

Type

FRN 515FRN 520

FRN 5040FRN 5050FRN 5065FRN 5080FRN 5100

OrderNo.

103 044101 287

172 560172 570172 580172590172 600

pmax.[mbar]

500500

500500500500500

Rp / DN

Rp 1 1/2Rp 2

DN 40DN 50DN 65DN 80DN 100

Dimensions [mm]a

150170

200230290310350

b

195250

195250285285350

c

40 47

7582.592.5100110

d

285345

315375440440535

e

G 1/2G 1/2

G 1/2G 1/2G 1/2G 1/2G 1/2

f

G 1/4G 1/4

G 1/4G 1/4G 1/4G 1/4G 1/4

g

G 1/4G 1/4

G 1/4G 1/4G 1/4G 1/4G 1/4

h

395480

430510620620800

i

G 1/2G 1/2

G 1/2G 1/2G 1/2G 1/2G 1/2

Weight[kg]

4.06.0

5.07.510.513.020.0

Application exampleZero pressure regulator

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Ventilation pipe

MixerGas motor

Filter

Pulse

KH GF FRS DMV

FRN

The adjustment spring acts against the force due to weight of moving parts. The force due to weight is compen-sated as a factor of the pretension of

the adjustment spring. The chamber between the working diaphragms must be connected with atmosphere (ventilation pipe). A pres-

sure compensation line (pulse) may be connected to the regulator dome.

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Pressure regulatorFRNZero pressure regulator

Flow diagramin regulated state

We reserve the right to make any changes in the interest of technical progress.

1,0

2

3

456789

10

20

30

4050

100

60708090

1 2 4 6 8 10 20 40 60 80 100 200 400 600 800 1000 2000 4000

1 2 4 6 8 10 20 40 60 80 100 200 400 600 800 1000 2000 4000

Vn [m /h] Luft / Air / Aria dv = 1,00° 3

Vn [m /h] Erdgas/Natural gas/Gaz Naturel/Gas metano dv = 0,65° 3

∆p [m

bar]

DN

80

DN

100

Rp 1

1/2

DN

40

DN

50

Rp 2

Rp 2

1/2

DN

65

Recommended operating range

Basis + 15° C, 1013 mbar, trockenBased on + 15° C, 1013 mbar, dryBase + 15° C, 1013 mbar, secBase + 15° C, 1013 mbar, secco

Head Offices and FactoryKarl Dungs GmbH & Co. KG Siemensstraße 6-10 D-73660 Urbach, GermanyTelephone +49 (0)7181-804-0Fax +49 (0)7181-804-166

Postal addressKarl Dungs GmbH & Co. KGPostfach 12 29D-73602 Schorndorf, Germanye-mail info@dungs.comInternet www.dungs.com