Page 1
Technical Manual
Europe, Middle East, and Africa Document Only
NTAEZR0206
July 2004 - Rev 01
PILOT -OPERATED REGULA TOR
SUMMARY
INTRODUCTION ................................................................ 1
DESCRIPTION.................................................................... 1
CHARACTERISTICS .......................................................... 2
LABELLING......................................................................... 2
SPARE P ARTS .................................................................... 3
OPERATION........................................................................ 5
EZR
DIMENSIONS AND WEIGHTS ............................................ 6
INSTALLATION ................................................................... 7
COMMISSIONING............................................................... 8
MAINTENANCE.................................................................. 9
INTRODUCTION
The EZR is a pilot-operated regulator used in transmission and distribution
networks or pipe lines supplying industries and commercial businesses.
The EZR can be equipped with a slam shut type OS2 (EZR body
change) which permits the gas flow to be cut off rapidly and totally in the
case of under or over outlet regulator pressure.
DESCRIPTION
The EZR consists of:
A version without integral slam shut:
• A body («E body» type), a bonnet
• A regulation subassembly consisting of a slotted cage and a
diaphragm/plug
• A travel indicator, an inlet screen
• A pilot assembly consisting of a filter with bleeding screw (filtration
20 microns), an adjustable restrictor and a pilot set to the required
outlet pressure
Type EZR
A version with integral slam shut:
• A body («X body» type), a bonnet, a connecting part
• A regulation subassembly consisting of a slotted cage and a
diaphragm/plug
• A travel indicator
• A pilot assembly consisting of a filter with bleeding screw (filtration
20 microns), an adjustable restrictor and a pilot adjusted to the
required outlet pressure
• A removable slam shut orifice
• A integral O-ring tightshut valve/bypass assembly
• A release relay type OS2 according to NTAOS2:
- a mechanism box (BM)
- a safety manometric box (BMS) to be connected outlet side of the
regulator
The EZR is in conformity with the
PED 97/23/EC and is classified in category IV.
Page 2
CHARACTERISTICS
Europe, Middle East, and Africa Document Only
EZR
Operating pressure PS 72.4 bar
Operating temperature TS - 17 / 66 °C
REGULATOR
Outlet pressure Pa 0.5 to 48.3 bar
Minimum differential ΔP min 2 to 3 bar
PN 20 18.6 bar
Maximum operating differential PN 50 ΔP ma x 50.0 bar
PN 100 55.2 bar
Max emergency differential ΔP emerg 72.4 bar
Accuracy AC 2.5 - 5
(1) Values correspond to the characteristics of the regulator diaphragm
The regulator body and the slam shut have been designed to support
different pressure and temperature levels
Body P max (bar) T min (°C) T max (°C)
A216WCB 96.7 - 20 71
A352LCC 100 - 30 71
B05c
Flow coefficients and valve plug travel
Coefficients Capacity DN 25 DN 50 DN 80 DN 100 DN 150
100 % 480 1800 3400 5550 11200
Cg 60 % 290 1020 1970 3300 7150
30 % 140 560 970 1690 3570
100 % 3 3 36 37 38 36
C1 60 % 29 28 29 27 30
30 % 3 0 29 26 26 26
Valve plug travel (mm) 35 35 50 50 50
B05a
Pilot pressure ranges
BMP size 1 2 3 45678
Spring colour White Yellow Black Green Blue Red Blue Red
Setting range 0.5 1.0 2. 8 5. 2 9.7 13.8 24.1 31.0
(bar) 1.0 2.8 5.2 9.7 13.8 24.1 31.0 48.3
B05b
(1)
SLAM SHUT
(1)
Accuracy AG
Set point range Pt up to 100 bar
PILOT
Type of pilot
Standard 161EB
Monitor 161EBM
Manometric box PS BMP 52 bar
Groups 1 and 2 according to PED 97/23/EC, 1st et 2nd family gas
Fluid according to EN 437, or other gases (compressed air, nitrogen). The gas
must be noncorrosive, clean (filtration on inlet side necessary) and dry
MATERIAL
Regulator
Body Steel
Bonnet Steel
Slotted disc Stainless steel
Diaphragm, O-rings Nitrile
Slam shut
Connecting part Steel
Orifice Stainless steel
Valve plug Stainless steel
Pilot
Body Stainless steel
Manometric box Stainless steel or Aluminium
Restrictor Stainless steel
Filter Aluminium
Cartridge Polythene
CONNECTIONS
Inlet / Outlet: ISO PN 100 B (ANSI 600 RF)
ISO PN 50 B (ANSI 300 RF)
ISO PN 20 B (ANSI 150 RF)
Other possibilities exist (contact factory)
ISO PN 16 B, 25 B, 40 B
Pilot Impulse line (IP): 1/4’’ NPT tapped
Pilot Monitor impulse line (IM): 1/4’’ NPT tapped
Intermediate impulse line (PI): 1/4’’ NPT tapped
Slam shut impulse line (IS): 1/4’’ NPT tapped
Mechanism box vent (E): 1/4’’ NPT tapped
Impulse diameter: Pipe interior Ø 8/10mm min.
2.5
5 (Piston)
LABELLING
OS2 -
EZR -
REGULATEUR/REGULATOR
SECURITE/SLAM-SHUT
1
GROUPE
série
N°
serial
(Gaz Naturel)
IV
Cat PS
Date Fab/Test
Mfg/Test date
Security Class
AB
BMS 027/017 BMS 162
BMS 236/315 BMS 071
mode défaillance
failure mode
classe sécurité
slam shut class
bar
Tem p TS
A352LCC+A350LF2
-17/+66°C
Standard
DD MM YEAR
EN 14382 -
norme
standard
norme
standard
bar
PT
matériau
shell
BMS Setting
Max only
Min only All
Max-Min types of BMS
EN 334
Label for Type EZR Regulator with OS2 Slam Shut
2
DN 25 50 80 100
PN
-
DN PN
Pumax bar
-
Class Ty pe Cg
Reduction
Cg See Flow Table
Depending on BMS configuration
PN
Pumax2018.6
PT
32
PS
18.6
150
20B1 50B1 100B2 16B 25B 40B
Other configurations available (contact factory)
FISHER
FRANCEL
28320 Gallardon-France
0062
100%
60%
30%
50
100
16
25
50
79
50
72.4
114
74.4
16
26
16
40
25
40
40
63
25
40
E04a
Page 3
LABELLING
Europe, Middle East, and Africa Document Only
DN 25 50 80 100
150
série
N°
serial
PS
GROUPE
(Gaz Naturel)
mode défaillance
failure mode
REGULATEUR/
REGULATOR
DN PN
Temp TS
matériau
shell
Cat
IV
1
PN
-
Typ e
Date Fab/Test
Mfg/Test date
bar
PT
-17/+66°C
A352LCC+A350LF2
FISHER
20B1 50B1 100B2 16B 25B 40B
Other configurations available (contact factory)
norme
standard
DS
28320 Gallardon-France
Cg
bar
FRANCEL
EN 334
Pumax bar
-
Class
0062
Label for Type EZR Regulator
EZR
Reduction
100%
Cg See Flow Table
Date DD MM YEAR
PN
Pumax2018.6
PT
PS
18.6
32
60%
50
50
79
50
30%
100
72.4
114
74.4
16
16
26
16
EZR
25
25
40
25
40
40
63
40
E04b
SPARE PARTS
B08
FilterPilot
Pilot, Restrictor, Filter spare parts
Reference
Description Item Pilot type
161EB 161EBH 161EBM 161EBHM
Pilot kit 0.34 to 13.8 bar 15 R161X000012 R161MX00012
Pilot kit 13.8 to 24.1 bar 15 R161X000022 R161MX00022
Pilot kit EBH(M) 16 R161HX00012 R161HMX0012
O-ring 17 1C8538X0052
Filter cartridge 18 17B6813X012
O-ring 19 1F269206992
SAV kit 0.34 to 13.8 bar
SAV kit 13.8 to 24.1 bar
SAV kit 24.1 to 48.3 bar
(1) The SAV kits include item numbers 15 or 16, 17, 18, 19
(1)
(1)
(1)
197435 197438
197436 197439
197437 197440
3
B09
Adjustable Restrictor
B11
Pilot spare parts
BMP
Size
Spring reference
1 17B1260X012
2 17B1262X012
3 17B1259X012
4 17B1261X012
5 17B1263X012
6 17B1264X012
7 17B1263X012
8 17B1264X012
To pass from 0.5 to 13.8 bar
or from 24.1 to 48.3 bar the
spring must be changed
B06
Page 4
SPARE PARTS
Europe, Middle East, and Africa Document Only
EZR
Regulator
EZR
with
slam shut
EZR without
slam shut
EZR
with/without
slam shut
B12
EZR SPARE PARTS
Reference
Description Item DN mm (inches)
25 (1’’) 50 (2’’) 80 (3’’) 100 (4’’) 150 (6’’)
O-ring 1 400009 400024 400091 400045 400262
O-ring 2 19B2838X012 18B2124X012 18B8514X012 18B2140X012 19B0359X012
Guide 3 401950 401951 401952 401953 401954
O-ring 4 400527 400263 400258 400260 400261
Bypass 5 180977 180977 180977 180977 180977
SAV kit PN 20 1 to 14 197421 197422 197424 197425 197427
SAV kit PN 50/100 1 to 14 197421 197423 197424 197426 197427
SAV kit PN 20 6 to 14 197428 197429 197431 197432 197434
SAV kit PN 50/100 6 to 14 197428 197430 197431 197433 197434
O-ring 6 18B3438X012 18B3438X012 10A8931X012 10A8931X012 10A3800X012
O-ring 7 1H2926X0032 1H2926X0032 1D191706992 1D191706992 1D191706992
O-ring 8 13A1584X052 13A1584X052 10A3803X062 10A3803X062 T12050X0012
O-ring 9 19B2838X012 18B2124X012 18B8514X012 18B2140X012 19B0359X012
PN 20 diaphragm 1 0 39B2397X012 29B2715X022 39B2726X012 38B5965X012 49B0357X012
PN 50/100 diaphragm 10 39B2397X012 28B2123X052 39B2726X012 39B3996X012 49B0357X012
O-ring 11 13A1584X052 13A1584X052 10A3803X062 10A3803X062 T12050X0012
O-ring 12 1E216306992 1E26306992 1J4888X0052 1J4888X0052 11A8741X052
O-ring 13 14A5713X012 10B4428X012 10B4366X012 10B4373X012 1H862306992
O-ring 14 1D269206992
Safety manometric box See NTAOS2 manual
B13
4
Page 5
OPERATION
Europe, Middle East, and Africa Document Only
EZR
REGULATOR
The EZR is a pilot-driven, diaphragm/plug regulator.
Tight shutoff is achieved by the diaphragm/plug pushing against the slotted
cage, the force of the closing spring and the inlet pressure.
• Opening
As the flow increases, the outlet pressure Pa decreases on the outlet
side of the regulator and on the pilot diaphragm.
Due to the force of the spring, the pilot opens.
The pilot flow increases, the pressure loss through the pilot restrictor
increases.
The modulated pressure Pm decreases.
The force of the closing spring and that of the Pm becomes inferior to
that provoked by the Pe, the regulator OPENS.
• Closing
As the flow decreases, the Pa increases outlet side of the regulator.
The force of the pilot diaphragm is overcome by the force of the
spring, the pilot closes.
The pressure loss through the pilot restrictor decreases.
The force of the closing spring and that of the Pm becomes superior
to that provoked by the Pe, the regulator CLOSES.
SLAM SHUT
The pressure of the zone to be protected (generally the pipeline on the
outlet side of the regulator and after the slam shut) is sensed by the
safety manometric box (BMS).
If the pressure exceeds the set tripping pressure, the release relay frees
the valve plug.
Due to the force of the closing spring and the fluid (trying to close), the
valve plug closes on the orifice.
The gas flow is obstructed until the fault has been corrected and the
mechanism box manually rearmed.
To reopen the valve plug an equal pressure balance on inlet and outlet
sides of the regulator is required.
The mechanism box is rearmed after opening the internal bypass.
Rearming and balancing are achieved at the same time.
B18
5
Page 6
C
N
A
L
B
F
E
R
M
E
=
=
E
T
I
H
W
C
L
S
O
D
E
C
N
A
L
B
F
E
R
M
E
=
=
E
T
I
H
W
C
L
S
O
D
E
DIMENSIONS AND WEIGHTS
Europe, Middle East, and Africa Document Only
A
D
J
B
H
C
F
G
M
E
25 Disassembly
B14a
EZR
Dimensions with slam shut (mm)
Body DN B C E H
25 233 315 348 250
50 243 330 357 265
80 361 366 410 301
100 393 410 454 345
150 423 396 468 332
B15b
Regulator weight (kg)
Body DN PN 20 PN 50 PN 100
25 20 21 22
50 39 41 43
80 63 69 71
100 104 113 123
150 192 211 244
B16b
Dimensions without slam shut (mm)
Body DN B C E
25 220 62 335
50 226 83 340
80 343 105 392
100 372 137 433
150 420 178 465
B15a
Regulator weight (kg)
Body DN PN 20 PN 50 PN 100
M
D
25 12 14 16
50 26 27 31
80 50 51 57
J
E
B
100 67 73 88
150 97 108 161
B16a
Body dimensions with/without integral slam shut (mm)
A
Body DN PN D J M
20 50 100
C
25 (1") 18 4 197 210 16 5 68 5 4
50 (2") 25 4 267 286 16 5 68 5 4
A
B14b
80 (3") 29 8 317 337 18 1 95 5 4
100 (4") 352 368 394 187 95 54
150 (6") 451 473 508 249 95 54
B17a
BMS
(Safety Manometric Box)
Type F G
Diaphragm 162 18 1
Piston 71 204
Bellows 74 223
B17b
6
Page 7
INSTALLATION
Europe, Middle East, and Africa Document Only
EZR
All interventions on the equipment should only be performed by
qualified and trained personnel.
WARNING
!
• The regulator is installed on horizontal pipeline. Version with
slam shut, the release relay is situated towards the bottom (see
schematic).
• Installation according to EN12186 recommended.
• Install according to direction of fluid flow (arrow).
• When assembling with adjacent elements care must be taken
not to create pressure force on the body and the assembling
elements (bolts, O-rings, flanges) should be compatible with
the geometry and working conditions of the equipment.
• If the case arises a support must be used to avoid pressure
force on the body (a support can be installed under the
flanges).
• Version with integral slam shut , connect the safety
manometric box (IS) to the impulse at 4D on a straight run of
the outlet pipe.
• It is recommended to separate the slam shut impulse line (IS)
from that of the pilot (IP). Do not connect the impulses on the
lower generator line.
• It is recommended to install an isolation valve and an
atmospheric valve, which can be useful for slam shut tripping
and verifications.
• No modification should be made to the structure of the
equipment (drilling, grinding, soldering...).
B19
WARNING
!
• It is recommended to install a servicing valve on the outlet
pipeline to facilitate adjustments and bleeding off to the
atmosphere.
• Verify that the inlet side is protected by an appropriate
device(s) to avoid exceeding the limits of utilization (PS, TS).
• Verify that the limits of utilization correspond to the appropriate operating conditions.
• Version with integral slam shut, verify that the safety
manometric box (BMS) and spring correspond to the appropriate operating conditions on the outlet side of the regulator.
• The equipment should not receive any type of shock, especially the release relay.
• The user should verify or carry out a protection adapted to the
environment.
• Fire, seismic and lightening are not taken into consideration
in standard regulators. If required, a special product selection
and/or specific calculations may be supplied according to
specific requirements.
• Version without integral slam shut, verify that a pressure
limiting device on the outlet side of the regulator guarantees a
pressure limit inferior or equal to the pilot PS.
7
Page 8
COMMISSIONING
Europe, Middle East, and Africa Document Only
Operations concerning the integral slam shut version are in italic.
All interventions on equipment should only be performed by
qualified personnel
PRELIMINARY VERIFICATIONS
Start-up positions
• Inlet and outlet valves
Æ Closed
Verify the absence of pressure between inlet and outlet valves
• Slam shut valve plug
Æ
Closed
• Pilot A
Æ Unloaded
• Restriction B
Æ START position
Slam shut set point verification
Using the atmospheric valve, inject a pressure equal to the pressure
required for the regulator
st
release relay stage
• 1
Æ Set (Stage 1)
• Slam shut valve plug
Æ Open (Stages 2 & 3)
Æ Progressively increase the pressure to
reach tripping
Æ Adjust setting if necessary (NTAOS2)
Note the set point value on the equipment
or mark it on a commissioning document
Positions before commissioning
• Impulse line isolating valve
Æ Open
• Impulse line atmospheric valve
Æ Closed
• Slam shut valve plug
Æ Closed
• Servicing valve
Æ Closed
The equipment is ready for commissioning
COMMISSIONING (Act slowly)
• Inlet valve
Æ Open very slowly
st
release relay stage
• 1
Æ Set (Stage 1)
• Slam shut valve plug
Æ Bypass (Stage 2)
Æ Open (Stage 3)
Triggered
position
Stage 1
Stages 2 and 3
B20
EZR
B22
• Servicing valve
Æ Open slightly
• Pilot
Æ Screw to set outlet pressure
• Outlet valve
Æ Open slowly
• Restriction
Æ Set to "RUN" by successive fractions 2, 4 or 6
• Servicing valve
Æ Closed
The equipment is commissioned
It is recommended to seal the release relay
8
Page 9
MAINTENANCE
Europe, Middle East, and Africa Document Only
EZR
Operations concerning the integral slam shut version are in italic.
SERVICING CHECK
Recommended frequency:
• Twice yearly minimum
Verification:
• Set point verification
• Regulator valve plug tightness
• Tripping and set point value
• Slam shut valve tightness
Departure positions
• Inlet valve
• Outlet valve
• Slam shut valve plug
• Regulator
Inlet and outlet sides of regulator under pressure
Tightshut verification (and tripping verification for integral slam
shut versions)
• Inlet valve
• Outlet valve
• Regulator Observe the evolution of the outlet pressure
If the outlet pressure increases Internal leak
Control the regulator valve plug
Control the regulator orifice
Control the pilot or contact after-sales
If the outlet pressure decreases External leak
Locate and seal the leak or contact after-sales
If the outlet pressure is constant The regulator is tightshut
Increase the set point until tripping occurs
(without exceeding the outlet limits)
ÆÆ
Æ Open
ÆÆ
ÆÆ
Æ Open
ÆÆ
ÆÆ
Æ Open
ÆÆ
ÆÆ
Æ In operation
ÆÆ
ÆÆ
Æ Closed
ÆÆ
ÆÆ
Æ Closed
ÆÆ
(control regulator tightness)
If the slam shut valve plug will not close Operating fault
If the slam shut valve plug closes Operating correctly
Observe the evolution of the outlet pressure (control tightness)
If the outlet pressure is constant
Observe the evolution of the outlet pressure (control tightness)
If the outlet pressure increases Internal leak
If the outlet pressure is constant Slam shut valve plug is tightshut
Filter verification
• Purge the filter C
• Verify the cartridge
Control the release relay
Control the slam shut valve plug or contact after-sales
Purge the outlet side of the regulator
Control the slam shut valve plug
Control the slam shut orifice
Control the bypass or contact after-sales
9
Page 10
MAINTENANCE
Europe, Middle East, and Africa Document Only
DISASSEMBLY
Recommended frequency:
Every 2 to 6 years (or less depending on operating conditions)
Verification:
Condition of O-rings, diaphragms, lubrication
Replacement:
O-rings, diaphragm
Tools:
Dimensions according to tables below
PRELIMINARY OPERATIONS
• Valve plug closed
• Inlet and outlet valves closed
• Bleed off outlet pressure
• Bleed off inlet pressure
• Unscrew the pilot impulse connection
• Unscrew the screws 1 fixing the bonnet 2
• Remove the bonnet 2
• Remove the diaphragm/plug assembly 3
• Remove the slotted cage 4, the O-ring 5, the strainer 6
(or the space washer 6)
• Clean parts and replace them if necessary
EZR
PILOT
• Unscrew the manometric box screws
• Remove the diaphragm
SLAM SHUT (Version with slam shut)
• Unscrew the BMS impulse line connector (IS)
• Remove the BM cover 7
• Unscrew the BM fixing screw 8
• Remove the holding pin 10
• Remove the BM 9
• Unscrew the screws 11 from the connecting part 12
• Remove the connecting part 12
• Remove the spring 13 and the valve plug 14
• Unscrew the bypass 15
• Unscrew the screws CHC 16 (DN 100 and 150)
Removing the orifice 17 (not recommended) requires a special extraction tool
REASSEMBLY
• Perform the above operations in reverse order (respect tightening torques)
• Replace the O-rings and diaphragm at each disassembly
SLAM SHUT REASSEMBLY (Version with slam shut)
• The valve plug should be held in an upper position using a packing
gland and a box to facilitate reassembly
• Precaution must be taken concerning the passage of the valve plug
over the segments
• Lubricate screws before tightening
• Lightly lubricate the O-rings (silicone grease) except for the valve
plug O-ring
• Lightly lubricate the stem (silicone grease)
• Lubricate the release relay mechanism (yoke and bolt)
(molybdenum graphite grease)
• Lubricate the BMS spring (molybdenum graphite grease)
• A special tool is required for reassembling a new orifice
Body DN
25 (1'') 9/16 - 12 x 1 3/4 13/16
50 (2'') 1/2 - 13 x 1 1/2 3 /4
80 (3'') 5/8 - 11 x 1 3/4 15/16
100 (4'') 3/4 - 10 x 2 1/4 1 1/8
150 (6'') 1 - 8 x 2 3/4 1 1/2
Body DN Screw Fixation Connector Bypass
25 (1'') 110 8 130 14
50 (2'') 110 9 130 14
80 (3'') 175 28 280 20
100 (4'') 260 28 280 24
150 (6'') 510 70 410 24
Screws
Items 1 and 11
Item 1 & 11 Item 18 Item 19 Item 15
Spanner
(inches)
B25a
Torque N.m.
B24
B25b
10
Page 11
EZR
Europe, Middle East, and Africa Document Only
Natural Gas Technologies
Emerson Process Management
Regulator Technologies, Inc.
Francel SA
Z.A. La Croix Saint Mathieu
28320 Gallardon, France
Tel : +33 (0)2 37 33 47 00
Fax : +33 (0)2 37 31 46 56
For further information visit www.emersonprocess.com/regulators
The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls, Inc., a business
of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time
without notice.
Emerson Process Management does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson Process
Management product remains solely with the purchaser.
©Emerson Process Management Regulator Technologies, Inc., 2009; All Rights Reserved
O.M.T. Officina Meccanica Tartarini s.r.l.
Via P. Fabbri, 1
I - 40013 Castel Maggiore (Bologna), Italy
Tel. : +39 - 0514190611
Fax: +39 - 0514190715
E-mail: info.tartarini@emerson.com
11
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