Dungs FRM 100065 User manual

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MC • Edition 2022.08 • No. 278 349 Rev. -0
1 … 60
The target group of this manual is qualied personnel of the
gas safety and regulating technology. Due to their specialist
training, knowledge and experience, they should be capable
of evaluating the work assigned to them and recognising
possible dangers. Only they are permitted to carry out as-
sembly, commissioning, settings and maintenance on the
devices in compliance with the recognised rules for occupa-
tional safety.
Instruction Manual
FRM 100065 - 100080 - 250065 - 250080
2. Warnings
Never carry out work as long as gas
pressure or voltage is applied. Avoid
open re. Please observe public regula-
tions.
The device must be protected from vi-
brations and mechanical impacts.
All adjustments and settings should only
be performed in accordance with the
instruction manuals of the connected
machines.
The recognised occupational safety
rules and accident prevention regula-
tions must be observed and, if neces-
sary, personal protective measures must
be taken.
Connected line systems must be free
from dirt and contamination.
Hang this instruction manual in a readily visible place
inside the installation room! Do not carry out any work
until you have read the safety instructions of this in-
struction manual and are qualied to do so.
The device may only be operated in
compliance with the operating condi-
tions stated on the type plate.
Prior to assembly, the device must be
inspected for transport damage.
The device must not be used in areas
with increased seismic risk.
Protection from environmental impacts
and weather conditions (corrosion, rain,
snow, icing, humidity (e.g. by conden-
sation), mould, UV radiation, harmful
insects, poisonous, corrosive solutions/
liquids (e.g. cutting and cooling uids),
must be guaranteed. Depending on the
installation site, it may be necessary to
take protective measures.
The device must not be exposed to open
re. Protection against lightning strikes
must be guaranteed.
2.1 General warnings
1. Target group
Explanation of the symbols
1, 2, 3,... = Order of
action
• = Instruction

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2.2 Designated use
The device is used in accordance with its designated use if
the following instructions are observed:
• Use of the device in gas transport and gas distribution
networks, commercial and industrial plants.
• Use in pressure regulator stations according to EN 12186
and EN 12279.
• Use with gases of the 1st, 2nd and 3rd gas families accord-
ing to EN 437 only (e.g. manufactured gas (town gas),
commercial grade natural gas and commercial grade
LPG gases in the vaporized phase).
2.3 Risks in case of misuse
• If used in accordance with their designated use, the de-
vices are safe to operate.
• Non-observance of the regulations may result in personal
injury or material damage, nancial damage or environ-
mental damage.
• Operator errors or misuse present risks to life and limb of
the operators and also to the device and other material
property.
• Use with dry and clean gases only, no aggressive media.
• Use only in compliance with the operating conditions
stated on the type plate.
• Use in perfect condition only.
• Malfunctions and faults must be eliminated immediately.
• Use only in observance of the instructions given in this
instruction manual and of national regulations.

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3. EU Declaration of conformity
Produkt / Product
Produit / Producto FRM 100065 - 100080
FRM 250065 - 250080
Medium Pressure Regulator 10 bar / 25 bar
Hersteller / Manufacturer
Fabricant / El Fabricante Karl Dungs GmbH & Co. KG
Karl-Dungs-Platz 1
73660 Urbach, Germany
bescheinigt hiermit, dass die
in dieser Übersicht genannten
Produkte einer EU-Baumuster-
prüfung (Baumuster) unterzo-
gen wurden und die wesentlichen
Sicherheitsanforderungen der:
• EU-Druckgeräterichtlinie
2014/68/EU
in der gültigen Fassung erfüllen.
Bei einer von uns nicht freige-
gebenen Änderung des Gerätes
verliert diese Erklärung ihre
Gültigkeit.
Der oben beschriebene Gegen-
stand der Erklärung entspricht
den einschlägigen Harmoni-
sierungsrechtsvorschriften der
Union.
Die alleinige Verantwortung für
die Ausstellung dieser Konformi-
tätserklärung trägt der Hersteller.
certies herewith that the prod-
ucts named in this overview were
subjected to an EU-Type Exami-
nation (production type) and
meet the essential safety require-
ments:
• EU-Pressure Equipment
Directive “2014/68/EU”
as amended.
In the event of an alteration of the
equipment not approved by us
this declaration loses its validity.
The object of the declaration
described above conforms with
the relevant Union harmonisation
legislation.
This declaration of conformity is
issued under the sole responsi-
bility of the manufacturer.
certie par la présente que le
produit mentionné dans cette vue
d’ensemble a été soumis à un
examen UE de type (type de
fabrication) et qu’il est conforme
aux exigences en matières de
sécurité des dernières versions
en vigueur de :
• Directive européenne
relative aux appareils sous
pression 2014/68/UE
Ce communiqué n’est plus
valable si nous eectuons une
modication libre de l’appareil.
L’objet décrit ci-dessus de la pré-
sente déclaration correspond aux
prescriptions légales applicables en
matière d’harmonisation de l’Union.
Le fabricant porte l’entière res-
ponsabilité pour l’établissement
de la présente déclaration de
conformité.
certica que los productos men-
cionados en este resumen han
sido sometidos a un examen UE
de tipo (tipo de producción) y
cumplen con los requisitos mínimos
de seguridad de:
• Directiva de equipos a
presión de la UE
2014/68/UE
en su versión vigente.
En caso de una modicación no
autorizada por nosotros, esta de-
claración pierde su validez.
El objeto de la declaración des-
crita anteriormente es conforme
a la legislación de armonización
pertinente de la Unión.
El fabricante es el único respon-
sable de la expedición de esta
declaración de conformidad.
Prüfgrundlage der EU-Baumusterprüfung (Baumuster)
Specied requirements of the EU-Type Examination(production type)
Base d‘essai de l‘examen UE de type (type de fabrication)
Requisitos especícos del examen UE de tipo (tipo de producción))
DIN EN 334
DIN EN 14382
Gültigkeitsdauer/Bescheinigung
Term of validity/attestation
Validité/certicat
Periodo de validez / Certicado
2024-09-12
CE-0085CP0256
Notizierte Stelle (EU Baumusterprüfung: Modul B)
Notied Body (EU type-examination: Module B)
Organisme notié (Examen de type de l‘UE: module B)
Organismo noticado (Examen tipo UE: Módulo B)
DVGW CERT GmbH
Josef-Wirmer-Straße 1-3
D-53123 Bonn, Germany
Notied Body number: 0085
Überwachung des QM-Systems (Modul D)
Monitoring of the QM system (module D)
Contrôle de la gestion de l‘assurance qualité (module D)
Supervisión del sistema de calidad y seguridad módulo D)
TÜV SÜD Industrie Service GmbH
Westendstraße 199
D-80686 München, Germany
Notied Body number: 0036
B. Sc., MBA, Simon P. Dungs
Geschäftsführer / Chief Operating Ocer
Directeur / Gerente
Urbach, 2022-08-01

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Product FRM 100065 - 100080
FRM 250065 - 250080
Medium Pressure Regulator 10 bar / 25 bar
Manufacturer Karl Dungs GmbH & Co. KG ▪ Karl-Dungs-Platz 1 ▪ D-73660 Urbach/Germany
Certies herewith that the products named in this overview were subjected to a Type Examination (production type) and meet the
essential safety requirements:
• The Pressure Equipment Safety Regulations, UKSI 2016:1105 (as amended by UKSI 2019: 969)
In the event of an alteration of the equipment not approved by us this declaration loses its validity.
The object of the declaration described above conforms with the relevant legislation.
This declaration of conformity is issued under the sole responsibility of the manufacturer.
Specied requirements of the Type Examination (production type) DIN EN 334
DIN EN 14382
Term of validity 2032-07-13
Approved Body 2016 No. 1105
TUV SUD BABT Unlimited
Octagon House,
Concorde Way, Segensworth North,
Fareham, Hampshire,
PO15 5RL, United Kingdom
Approved Body Number: 0168
Monitoring of the QA system Conformity process adopted: Module B+D
B.Sc., MBA Simon P. Dungs,
Chief Operating Ocer
Urbach, 2022-08-01
3. Declaration of conformity

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4. Table of contents
1. Target group 1
2. Warnings 1
2.1 General warnings 1
2.2 Designated use 2
2.3 Risks in case of misuse 2
3. Declaration of conformity 3
4. Table of contents 5
5. List of abbreviations 6
6. Features 7
6.1 Technical data 7
6.2 Nomenclature 8
6.3 Adjustment range 8
6.4 Accuracy class / lock-up pressure class 9
6.5 Selection of regulator springs 10
6.6 Selection of SAV springs 10
6.7 Type plate 11
7. Function 12
8. Dimensions 13
9. Installation 15
9.1 General information 15
9.2 Installation instructions 16
9.3 Vent Lines (only U.S.A and Canada) 17
9.4 Torque 18
10. Function integrated SAV 19
11. Settings 20
11.1 Regulator setting 20
11.2 SAV setting 21
11.3 Calculation example of set values 22
11.4 Replacement of regulator springs 23
11.5 Replacement of SAV springs 24
11.5.1 Spring exchange Wdso 25
11.5.2 Spring exchange Wdsu 25
12. Commissioning, decommissioning and recommissioning FRM or SAV 26
12.1 General information 26
12.2 Initial Pressurization of FRM 26
12.3 Leakage test 26
12.4 Commissioning / unlocking / control of the set values 27
12.5 Recommissioning 29
12.6 Decommissioning 29
13. Faults and their causes 29
14. Maintenance 32
14.1 General information 32
14.2 Maintenance instructions of the regulator 33
14.2.1 Preparation 33
14.2.2 Replacement of the working diaphragm 33
14.2.3 Replacement of the control plate / valve seat 37
14.2.4 Replacement of the compensation membrane 39
14.2.5 Replacement closing part SAV 40
14.3 Maintenance instructions of the SAV 42
14.3.1 Preparation 42
14.3.2 Removal of the ASE from the housing 42
14.3.3 Mounting of the ASE on the housing 43
14.4 Necessary tools 44
14.5 SAV Leakage test 45
14.6 Recommended maintenance intervals for SAV and FRM 45
15. Spare parts 46
15.1 List of spare parts of the regulator 47
15.2 List of spare parts of the SAV 48
15.3 Accessories 48
15.4 Storage conditions 49
16. Flow volume tables 49
16.1 Natural gas ow volume table 50
16.2 Air ow volume tables 54
16.3 Valve ow volume coecient KG 56

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5. List of abbreviations
Abbreviation Description
AGo
Response pressure group of the overpressure shut-o (OPSO)
AGu Response pressure group of the underpressure shut-o (UPSO)
AC Accuracy class
ASE
Safety shuto valve (SAV) without housing (as spare part)
KGFlow volume coecient for natural gas
DN Nominal diameter
Fail-open If the main diaphram or the auxiliary pressure required for the actuation of the main valve fails, the main
valve moves automatically to the open position.
IS Type: integral strength range (max. casing pressure)
Maximum rated operating pressure for both, body and upper housing
DS Type: dierential strength range
Class A Functional class: in case the membrane is damaged or in the event of a breakdown of the impulse line pres-
sure the SAV closes
MOP Maximum admissible operating pressure
pdOutlet pressure
pd, abs. Output pressure as absolute pressure
puInlet pressure
pu, abs. Inlet pressure as absolute pressure
pdo Overpressure shut-o (OPSO)
pdu Underpressure shut-o (UPSO)
pmax Maximum operating pressure
PN Nominal pressure rating of the ange
PS Maximum admissible pressure
SAV Safety shuto valve / Slam-shut valve (same as ASE but with housing)
SBV Safety relief valve
SG Lock-up pressure class
SN Serial number
SZ Lock up pressure zone group
Tp. Operating temperature -20 °C ... +60 °C
Wds Specic guide range
Wdo Adjustment range for the overpressure shut-o (OPSO) through regulation of the
available adjusting springs
Wdu Adjustment range for the underpressure shut-o (UPSO) through regulation of the
available adjusting springs
Wdso Specic adjustment range of the adjusting spring installed for the over pressure shut-o (OPSO)
Wdsu Specic adjustment range of the adjusting spring installed for the under pressure shut-o (UPSO)

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6. Features
6.1. Technical data
Technical data SAV …
Device Safety shuto valve / slam-shut valve in compliance with EN14382, class A
Type IS
(FRM 100...) / DS (FRM 250...)
Response time ≤ 2s
Adjustment range
below Wdu
35 - 3 000 mbar (3,5 - 3 00 kPa) / 14 - 1 205 "W.C. (0.5 - 43.5 PSI)
Adjustment range
above Wdo
180 - 5 000 mbar (18 - 500 kPa) / 72 - 2 007 "W.C. (2.6 - 72.5 PSI)
Materials Main body housing:
cast iron GJS 400-15
Diaphragm housing: Aluminium
Diaphragms: NBR
Technical data FRM …
Device Spring-loaded medium pressure regulator according to EN 334
Type IS
(FRM 100...) / DS (FRM 250...)
Type of gas Family 1+2+3 (e.g. manufactured gas (town gas), commercial grade natural gas
and commercial grade LPG gases in the vaporized phase).
Nominal diameters
Flange
Connecting anges PN 25 according to EN 1092-1 or ANSI Class 150 per B16.5
DN 65 80
NPS 2.5" 3"
Admissible pressure load FRM 250... 25 bar (2 500 kPa / 360 PSI )* / FRM 100... 10 bar (1 000 kPa / 145 PSI)
Max. inlet pressure FRM 250... 25 bar (2 500 kPa / 360 PSI )* / FRM 100... 10 bar (1 000 kPa / 145 PSI)
Outlet pressure range 90-4 000 mbar (9 - 400 kPa) / 12 to 1 600 "W.C. (0.4 - 58 PSI)
Minimum inlet pressure for
MD version
440 mbar (44 kPa) / 170 "W.C. (6.4 PSI)
Minimum inlet pressure for
HD version
900 mbar (90 kPa) / 360 "W.C. (13 PSI)
Minimum inlet pressure for
UHD version
1 500 mbar (150 kPa) / 602 "W.C. (22 PSI)
Materials Main body housing: cast iron GJS 400-15
Diaphragm housing: steel
Diaphragms: NBR
Ambient temperature -20 °C to + 60 °C / -4 °F to + 140 °F
*19 bar (1 900 kPa / 275 PSI) with ANSI 150 anges

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6.3 Adjustment range
6.2 Nomenclature
Example FRM 100080 MD/ SAV MD FRM 100 080 MD SAV MD
Type Spring-loaded medium pressure regulator
Maximum operating pressure
MOP
100 … 10 000 mbar (1 000 kPa)
4 018 “W.C (145 PSI)
250 ... 25 000 mbar (2 500 kPa)
2 500 “W.C. (360 PSI)
Nominal diameter 065 DN 65 (2")
080 DN 80 (3")
Pressure range, outlet
pressure
MD Medium pressure
HD High pressure
UHD Ultra high pressure
Safety device SAV Integrated shut-o valve
Pressure range, trip pressure MD Medium pressure
HD High pressure
UHD Ultra high pressure
Flange type
ANSI
with standard PN-25
with ANSI Class 150
Type Connec-
tion
Ver-
sion
Accuracy
class*
[AC]
Lock-up
pressure
class* [SG]
Outlet pressure
range Wd
Under pressure monitoring
SAV
Over pressure monitoring
SAV
Wdu AG Wdo AG
FRM 100065 MD DN 65 MD AC 5/10** SG 10/20**
90 - 420 mbar
36 - 168 "W.C.
FRM 100065 HD DN 65 HD AC 5 SG 10
400 - 1 500 mbar
160 - 602 "W.C.
FRM 250065 UHD DN 65 UHD AC 5 SG 10
1 000 - 4000 mbar
400 - 1 600 "W.C.
FRM 100065 MD / SAV MD DN 65 MD AC 5/10** SG 10/20**
90 - 420 mbar
36 - 168 "W.C.
35 - 400 mbar
12 - 160 "W.C.
AG 10
180 - 800 mbar
72 - 321 "W.C.
AG 10
FRM 100065 HD / SAV HD DN 65 HD AC 5 SG 10
400 - 1 500 mbar
160 - 602 "W.C.
150 - 1 400 mbar
60 - 562 "W.C.
AG 5
500 - 3 500 mbar
200 - 1 406 "W.C.
AG 5
FRM 250065 UHD / SAV UHD DN 65 UHD AC 5 SG 10
1 000 - 4000 mbar
400 - 1 600 "W.C.
150 - 3 000 mbar
60 - 1 200 "W.C.
AG 5
1 300 - 5 000 mbar
522 - 2 005 "W.C.
AG 5
FRM 100080 MD DN 80 MD AC 5/10** SG 10/20**
90 - 420 mbar
36 - 168 "W.C.
FRM 100080 HD DN 80 HD AC 5 SG 10
400 - 1 500 mbar
160 - 602 "W.C.
FRM 250080 UHD DN 80 UHD AC 5 SG 10
1 000 - 4000 mbar
400 - 1 600 "W.C.
FRM 100080 MD / SAV MD DN 80 MD AC 5/10** SG 10/20**
90 - 420 mbar
36 - 168 "W.C.
35 - 400 mbar
12 - 160 "W.C.
AG 10
180 - 800 mbar
72 - 321 "W.C.
AG 10
FRM 100080 HD / SAV HD DN 80 HD AC 5 SG 10
400 - 1 500 mbar
160 - 602 "W.C.
150 - 1 400 mbar
60 - 562 "W.C.
AG 5
500 - 3 500 mbar
200 - 1 406 "W.C.
AG 5
FRM 250080 UHD / SAV UHD DN 80 UHD AC 5 SG 10
1 000 - 4000 mbar
400 - 1 600 "W.C.
150 - 3 000 mbar
60 - 1 200 "W.C.
AG 5
1 300 - 5 000 mbar
522 - 2 005 "W.C.
AG 5
*Accuracy class / Lock-up pressure class to EN 334 **pd = 90-180 mbar: AC 10, SG 20; pd= 180-420 mbar: AC 5, SG 10

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6.4 Accuracy class / lock-up pressure class
The AC and SG data, in compliance with EN 334, do not
make any statement about the modulation range. Knowl-
edge of the minimum and maximum volume ow is essential
for the application in the eld. Therefore, the accuracy val-
ues 'control quality' and 'lock-up pressure class' that can be
guaranteed at a volume ow of 1:10 were determined. The
Abbrevia-
tion
Description
AC Accuracy class
pdOutlet pressure
pu1/2 Inlet pressure
pds Set nominal value of the outlet pressure
SG Lock-up pressure class
Qmin / pu AC minimum ow volume at a specic inlet pressure pu (lower limit of the volume ow at which the stable
operating conditions for a given nominal value within the given operating temperature range).
Qmax / pu AC maximum ow volume at a specic inlet pressure pu (upper limit of the volume ow at which a given
accuracy class for a given nominal value within the given operating temperature range).
AC values of the table mentioned above refer to the maxi-
mum admissible percentage deviation of the outlet pressure
from the set nominal value, at which Qmax ≤ 10 is observed.
pd
Qmin, pu1
Q
pu1
Qmin, pu2 Qmax, pu1 Qmax, pu2
pu2
pds
pds x (1-AC/100)
pds x (1+SG/100)
pds x (1+AC/100)

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6.5 Selection of regulator springs
6.6 Selection of SAV springs
Specic set range, outlet pressure Wds
Spring colour Order num-
ber
Wire ∅
[mm]
Length
[mm]
∅
[mm]
Setpoint range
MD HD UHD
Blue 270347 8.0 300 65.0 90 - 140 mbar
36 - 56
"W.C
Black 270348 9.0 300 68.0 120 - 185 mbar
48 - 74 "W.C
400-550 mbar
161 - 221 "W.C
Purple 270349 10.0 300 69.0 180-280 mbar
72 - 112 "W.C
540-850 mbar
217 - 341"
W.C
1 000 - 1 300 mbar
401 - 522
"W.C
Orange 270350 11.0 300 71.0 250-420 mbar
100 - 169 "W.C
800 - 1 150 mbar
321 - 462 "W.C
1 100 - 1 800 mbar
442 - 723 "W.C
Pink 270352 12.0 300 73.0 1 100 - 1 500 mbar
442 - 602 "W.C
1 600 - 2 500 mbar
642 "W.C. - 1 004 "W.C
Red 271132 14.0 300 77.0 2 900 - 4 000 mbar
964 - 1 606 "W.C.
Specic set range, underpressure Wdsu
Spring colour Order num-
ber
Wire ∅
[mm]
Length
[mm]
∅
[mm]
Setpoint range
MD HD UHD
Blue 270356 2.0 55 12.3
35 - 110 mbar
14 - 44 "W.C.
Black 270357 2.3 55 12.3
50 - 250 mbar
20 - 100 "W.C.
Purple 270358 2.5 55 12.3
80 - 400 mbar
32 - 160 "W.C.
150 - 500 mbar
60 - 200 "W.C.
150 - 500 mbar
62 - 101 "W.C.
Orange 270359 2.8 55 12.3
300 - 1 000 mbar
120 - 401 "W.C.
300 - 1 000 mbar
121 - 402 "W.C.
Silver 270360 3.0 60 15.0
800 - 1 400 mbar
321 - 563 "W.C.
800 - 1 400 mbar
321 - 563 "W.C.
Pink 276126 3.5 60 15.0
1 200 - 3 000 mbar
482 - 1 205 "W.C.
Specic set range, overpressure Wdso
Spring colour Order number Wire ∅
[mm]
Length
[mm]
∅
[mm]
Setpoint range
MD HD UHD
Green 270366 2.5 60 30.0
180 - 270 mbar
72 - 117 "W.C.
Red 270367 2.7 60 30.0
230 - 370 mbar
92 - 148 "W.C.
Yellow 270368 3.2 60 30.0
300 - 500 mbar
120 - 200 "W.C.
Blue 270369 3.5 60 30.0
400 - 800 mbar
160 - 321 "W.C.
500 - 1 000 mbar
120 - 401 "W.C.
Black 270370 3.7 60 30.0
700 - 1 300 mbar
281 - 522 "W.C.
Purple 270371 4.0 60 30.0
1 000 - 1 800 mbar
401 - 723 "W.C.
Orange 270372 4.5 60 30.0
1 300 - 2 500 mbar
522 - 1 004 "W.C.
1 300 - 2 500 mbar
522 - 1 005 "W.C.
Pink 270373 4.8 60 30.0
1 800 - 3 500 mbar
723 - 1 406 "W.C.
1 800 - 3 500 mbar
723 - 1 407 "W.C.
White 271115 5.0 60 30.0
2 500 - 5 000 mbar
1 005 - 2 009 "W.C.

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6.7 Type plate
85
53
Regulator
Abbrevia-
tion
Description
AGoResponse pressure group of the overpressure shut-o (OPSO)
AGuResponse pressure group of the underpressure shut-o (UPSO)
AC Accuracy class
KGFlow volume coecient for natural gas
DN Nominal diameter
Fail-open If the main diaphram or the auxiliary pressure required for the actuation of the main valve fails, the main valve
moves automatically to the open position.
IS Type: integral strength range (max. casing pressure)
DS Type: dierential strength range
Class A Functional class: in case the membrane is damaged or in the event of a breakdown of the impulse line
pressure the SAV closes
pdOutlet pressure
puInlet pressure
PN Nominal pressure of the ange
PS Maximum admissible pressure
SAV Safety shuto valve / slam-shut valve (ASE without housing)
SG Lock-up pressure class
-20T60 Operating temperature -20 °C ... +60 °C / -4 °F to + 140 °F
SN Serial number
Wds Specic guide range
Wdo Adjustment range for the overpressure shut-o (OPSO) through regulation of the
available adjusting springs
Wdu Adjustment range for the underpressure shut-o (UPSO) through regulation of the
available adjusting springs
Wdso Specic adjustment range of the adjusting spring installed for the overpressure shut-o (OPSO)
Wdsu Specic adjustment range of the adjusting spring installed for the underpressure shut-o (UPSO)

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7. Function
The pressure regulator’s function is to keep the outlet
pressure largely constant, independent of changes in the
inlet pressure and/or in the ow volume. In the depressur-
ised state the regulator is open. The pressure regulator
complies with the requirements of EN 334 as direct acting
gas pressure regulator.
Main components
AControl plate
BControl plate shaft
CInlet pressure compensation diaphragm
D Lower diaphragm shell
E Impulse connection for the outlet pressure
F Working diaphragm
G Vent connection
HSetpoint spring
Depressurised state
The force of the setpoint spring H acts on the working
diaphragm F. In depressurised state there is no coun-
terforce acting in the lower diaphragm shell D, since no
overpressure is applied in the outlet range. The resulting
downward movement of the working diaphragm causes
the control plate shaft B to be pushed downwards. In this
way, the control plate A is also moved downwards and
separated from the seat. The regulator is open.
Steady state
In case of increasing outlet pressure, the force on the
working diaphragm F in the diaphragm shell D increases
also. The working diaphragm F is thus pushed upwards
until the force of the setpoint spring His equal to that of
the outlet pressure. The upward movement of the working
diaphragm F causes the control plate shaft B to be pulled
upwards. In this way, the control plate A is also pushed
upwards and the valve gap is reduced. The ow volume
decreased in this way reduces the outlet pressure until
the set nominal value (outlet pressure) is reached again
and a balance of forces at the working diaphragm Fis
established.
If the outlet pressure drops, the force on the working
diaphragm F in the lower diaphragm shell D decreases
also. The working diaphragm F is, thus, pushed down-
wards until the force of the setpoint spring His equal to
that of the outlet pressure. The upward movement of the
working diaphragm F causes the control plate shaft Bto
be pushed downwards. In this way, the control plate A is
also moved downwards and the valve gap is increased.
The increased ow volume increases the outlet pressure
until the set nominal value (outlet pressure) is reached
again and a balance of forces at the working diaphragm F
is established.
Inlet pressure compensation
Changes in the inlet pressure have no inuence on the
balance of forces. The inlet pressure is compensated by
the inlet pressure compensation diaphragm C. The inlet
pressure is then transferred in the chamber below the inlet
pressure compensation diaphragm Cthrough an opening at
the control plate A. At the control plate A, the inlet pressure
acts in the opening direction. At the inlet pressure compen-
sation diaphragm C, opposite to the control plate, the inlet
pressure acts in the closing direction. The surface of the
control plate, on which the inlet pressure acts from top, has
the same size as the admission pressure compensation
diaphragm C, on which the inlet pressure acts from below.
Therefore, both forces cancel each other. The inlet pressure
balance at the regulator is ensured.
A
D
E
H
F
B
G
C

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13 … 60
8. Dimensions
FRM...
A
C
D
E
B
Type Order
number
p max.
[bar / kPa/PSI]
DN Dimensions [mm] Weight
[kg]
ABC D E F** G
FRM 100065 MD 277241 10 / 1 000 / 145 65 500 276 120 567 892  "G ⊘ 12 56 ( 123 lbs)
FRM 100065 HD 277242 10 / 1 000 / 145 65 380 276 120 567 892  "G ⊘ 12 50 ( 110 lbs)
FRM 250065 UHD 277243 25 / 2 500 / 360 65 380 276 120 567 892  "G ⊘ 12 52 ( 114 lbs)
FRM 100080 MD 277244 10 / 1 000 / 145 80 500 298 120 567 892  "G ⊘ 12 58 ( 128 lbs)
FRM 100080 HD 277245 10 / 1 000 / 145 80 380 298 120 567 892  "G ⊘ 12 53 ( 115 lbs)
FRM 250080 UHD 277246 25 / 2 500 / 360 80 380 298 120 567 892  "G ⊘ 12 55 ( 121 lbs)
B
Ermeto screw (commpression) connection
12 L: GE 12 - 
with screw connection M 16 for pipes 12 x 1.5.
* Option only US/CDN
Optional with swagelok tting for " tubing.
** "G to  "NPT adapter p/n 231945
F
G*

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FRM... / SAV
Type Order
number
p max.
[bar / kPa/PSI]
DN Dimensions [mm] Weight
[kg]
ABC D E F** G
FRM 100065 MD/SAV MD 273061 10 / 1 000 / 145 65 500 276 135 567 892  "G ⊘ 12 71 ( 156 lbs)
FRM 100065 HD/SAV HD 276113 10 / 1 000 / 145 65 380 276 135 567 892  "G ⊘ 12 65 ( 143 lbs)
FRM 250065 UHD/SAV UHD 276114 25 / 2 500 / 360 65 380 276 135 567 892  "G ⊘ 12 67 ( 148 lbs)
FRM 100080 MD/SAV MD 276115 10 / 1 000 / 145 80 500 298 135 567 892  "G ⊘ 12 73 ( 161 lbs)
FRM 100080 HD/SAV HD 276116 10 / 1 000 / 145 80 380 298 135 567 892  "G ⊘ 12 68 ( 150 lbs)
FRM 250080 UHD/SAV UHD 276117 25 / 2 500 / 360 80 380 298 135 567 892  "G ⊘ 12 70 ( 154 lbs)
A
C
E
D
B
DIN versions come standard with
Parker/Ermeto screw (commpression)
connection 12 L: GE 12 -  with screw
connection M 16 for pipes 12 x 1.5.
* Option only US/CDN
Optional with swagelok tting for
" p/n 267856 or " tubing p/n 267783.
US versions come standard with swa-
gelok tting for " tubing.
F
** "G to  "NPT adapter p/n 231945

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9. Installation
9.1 General information
• This device can only be installed in
compliance with the rules and stand-
ards applicable and in accordanc
with the local regulations and
authorisantions.
• Install the device in a building or
housing, do not install it outdoors without suitable
protective measures!
• The lifting devices used must be suitable for the
load to be lifted.
• Enough installation space for operation and main-
tenance has to be provided.
• It is recommended to install a lter with a pore size
≤ 50 µm upstream of the regulator.
• The installation must not impair the functioning of
other components.
Check prior to installation!
• Shut-o valves both on the inlet and outlet side are
closed.
• Upstream and downstream piping are free from com-
bustible gas.
• Prevent explosive gas-air mixture: the room atmosphere
must be monitored for gas leakages. For the US and
Canada, piping shall be purged per NFPA 56, NFPA 54
or per B 149.1.
• Ensure electrical continuity with use of suitable bonding
straps. Prevent contact voltage and ignitable ashover.
• The performance data on the type plate corresponds to
the purchase ordering data.
• Flanges on the inlet side and outlet side of the connect-
ing lines are parallel with the FRM anges.
• The sealing surfaces of the ange are undamaged and
clean.
• The maximum inlet pressure of the system is lower than
the maximum admissible pressure of the regulator.
• Protective caps at the connection ange, if any, must be
removed.
• The minimum distances for the setting and changing
springs must be observed.
• The pipeline on the inlet side must be free of water and
dirt.
Note during installation!
• Mounting must be carried out in a tension-free state.
No excessive bending.
• Tighten the screws crosswise.
• Tightening torques must be observed.
• Vent lines and blow-o lines have to be positioned
separately.
• Vent lines and blow-o lines must lead outdoors: gases
must be able to escape to a non-hazardous environ-
ment. See section “vent lines”.
• The impulse lines may not be shut o or isolated from
the gas pressure.
• The specied distance between the measuring points of
the impulse lines must be observed.
• The ow direction (arrow) on the housing must be fol-
lowed.

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9.2 Installation instructions
• The installation must be carried according to the installa-
tion scheme specied below, unless deviations required
by regulations.
• Install the safety shuto valve in the ow direction (ar-
row/housing).
• Design a straight stablisation section with the equal
diameter.
• Make sure that the impulse tapping at the stablisation
section is clean and free from burrs. Distance > 5 x DN
Pos. Designation
1Shuto valve, inlet side (e.g. ball valve or buttery valve)
2Filter
3Welded part
4Pressure gauge, inlet side
5Regulator with integrated SAV
6Calming section
7SBV
8Ball valve
9Pressure gauge, outlet side
10 Test burner
11 Venting ball valve
12 Impulse line, SAV
13
Impulse line, regulator
14 Vent line connection regulator
15 Vent line connection SAV
16 Relief line connection SBV
• Maximum ow velocity in the stablisation section:
≤ 30 m/s.
• Use steel pipe impulse lines:
For versions using Ermeto screw connection 12 L:
GE 12 - , use D= 12 x 1.5
For versions using tting p/n 267856, use " tubing
• Avoid accumulation of condensate: install the impulse
lines with a gradient.
12
3
4
5
8
6
7
911
10
12
Stabilisation section > 5 x DN
Installation drawing
13
15
14
16

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17 … 60
Mounting position
9.3 Vent Lines (Only U.S.A and Canada)
In addition to the requirements below, vent lines shall
be installed in accordance with the applicable instal-
lation code (e.g. NFPA 86, NFPA 37, NFPA 54, B149.3,
B1491) and shall terminate to an approved and safe
location.
Requirements for Vent line Installation
• Keep elbows to an absolute minimum, and when a
90 deg needs to be made, do as follows:
• If using rigid pipe, use long radius elbows (not short).
Long radius elbows have a bending radius of
1.5 times the pipe diameter. Short elbows have a
bending radius of 1 times the pipe diameter.
• If using tubing and permitted by code, use a minimum
bending radius of 2 x the vent line outside diameter.
• Do not reduce along the entire run of the vent line the
pipe size that is established at the regulator’s threaded
vent connection.
• Do not apply a bending moment on the vent line, if rigid
pipe is used. This can apply a large bending force (a se-
vere stress) to the vent connection of the regulator and
damage the housing, which will bypass of the vent line.
• Apply proper pipe hangers and supports so that the vent
line does not load or strain due to the regulator vent line
connection due weight of the vent piping or due to a
bending moment at the vent connection.
Manifolding of vent lines
• Do not manifold the FRM vent with the SAV vent or a
relief valve vent.
• Do not manifold the SAV vent with a relief valve vent.
• Do not manifold other vents of similar devices (regula-
tor to regulator, relief valve to relief valve, etc), unless
permitted by and manifolded in accordance with the
applicable installation code.
Requirements for Vent Line Length and Size for
FRM and SAV vents
• The diameter of vent line shall be the same size at the
vent connection.
• The vent line from the SAV vent connection to the point
of termination shall be the same size.
• The vent line from the FRM vent connection to the point
of termination shall be the same size if
1. downstream equipment is an industrial application
covered by NFPA 37, NFPA 85, NFPA 86, or NFPA
87, or
2. a relief valve (or token relief valve) is mounted down-
stream of the FRM.
Otherwise, the following apply:
• Use schedule 40,  " pipe or minimum 15mm OD tub-
ing.
• After a length of 15 ft: schedule 40,  " pipe or minimum
20 mm OD tubing.
• After additional 15 ft, increase pipe to schedule 40,
1 " pipe or minimum 26 mm OD tubing until the point of
termination.
Requirements for the Vent Line’s Point of Termination
• Considerations depending on the gas type:
• For Natural Gas and lighter than air combustible gas-
es, the gas will eventually leave the area of discharge.
• However, for heavier than air combustible or even
non-combustible gases, they could accumulate at the
point of discharge or even accumulate underneath
the point of discharge which can create areas of re-
tained combustible or non-breathable gases. Specic
attention must be taken for such cases.

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9.4 Torque
The device must not be used as lever.
Use adequate tools!
Tighten the screws crosswise!
[Nm]
18
19
ISO 7005-2
DN -- -- -- 25 40 50 65 80 100 125 150
Rp ⅜  11 22 -- -- -- --
Mmax.
[Nm] t 10 s 70 105 225 340 610 110 1600 2400 5000 6000 7600
Tmax.
[Nm] t 10 s 35 50 85 125 200 250 325 400 -- -- --
Max. torque system accessories
M … / G … M 4 M 5 M 6 M 8 M 10 G ⅛ G ¼ G  G ¾
Mmax.
[Nm] t 10 s 2.5 Nm 5 Nm 7 Nm 15 Nm 40 Nm 5 Nm 7 Nm 10 Nm 15 Nm
Max. torque anged joint
Stud M 12 x 55
(EN 13611)
M 16 x 65
(DIN 939)
Mmax.
[Nm] t 10 s 30 Nm 60 Nm
Mmax.
Tmax. Mmax.
• If a vent line runs through a roof, verify that the vent
line terminates above the point where water and snow
accumulation on the roof does not cover or isolate the
termination point from the atmosphere.
• To limit the consequences of rain or debris getting into
the vent, always turn the outlet of the vent down towards
the ground.
• Bug Screens:
• Some bugs are attracted to the smell of the natural/
LP gas odorant and could nest in the vent line, which
could seal the termination point. Install a bug screen
on the termination point to deter insects from nesting
in the line.
• Do not paint the bug screen.
• Points of Discharge
• The vent line must discharge away from where peo-
ple might walk or work, such as pedestrians, roofers
and other maintenance professionals.
• The vent line must discharge away from fresh air
intakes and from windows. See applicable fuel gas
installation code (e.g. CSA B149.1, NFPA 54, or
International Fuel Gas Code) for acceptable clear-
ances.
• The end shall be goose-necked downwards.

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10. Function integrated SAV
SAV protects downstream ttings or lines against pres-
sures that are too high or too low. As soon as the pre-set trip
pressure falls below or exceeds a limit due to a fault, the SAV
automatically interupts the gas ow. Under normal operating
condition the SAV is open.
If the equipment downstream of the regulator, including any
pipework, cannot safely operate or contain a pressure equal
to the highest supply pressure (inlet to regulator), a SAV
must be installed. The SAV is designed to shut down the gas
supply in the event of a fault condition.
The SAV complies with the requirements of EN 14382 as
safety shuto valve.
Main components
1 Shutter case
2Closing spring
3 Trigger mechanism
4 Chamber with the pressure to be monitored
5 Working diaphragm
6 Push rod
7Setpoint spring for pdo
8Setpoint spring for pdu
9 Protective cap
Function
Chamber 4 is connected to the outlet pressure via
a pulse line.
The pressure to be checked acts on the working diaphragm
5. The force of the setpoint springs 7 and 8 acts as counter-
force.
In case of an unbalance of forces (overpressure or un-
derpressure), the SAV is actuated and the gas supply is
blocked.
1
2
3
4
5
6
7
9
8

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11. Setting
11.1 Regulator setting
Setting of the outlet pressure
The regulator is set using the adjusting screw B.
1. Remove the protective cap A.
2. Turn the adjusting screw B using an open-ended
wrench SW 24 mm.
3. Turning clockwise: the preload of the setpoint spring is
increased and the outlet pressure pds is increased (+).
4. Turning counter-clockwise: the setpoint spring is re-
leased and the outlet pressure pds reduced (–).
5. After the setting: screw on the protective cap A again.
C
A
B
D
E
F