Emerson Tartarini BM5 Series User manual

Instruction Manual
D103656X012
September 2018
BM5 Series
SUMMARY
Introduction ........................................................................ 1
PED Categories and Fluid Group ...................................... 2
Characteristics ................................................................... 2
Labelling ............................................................................ 2
Overpressure Protection .................................................... 3
Transport and Handling ..................................................... 3
Atex Requirements ............................................................ 3
Slam-Shut Controller ......................................................... 4
Dimensions and Weights ................................................... 5
Operation ........................................................................... 6
Installation ......................................................................... 7
Startup ............................................................................... 8
Slam-Shut Controller Adjustment ...................................... 9
Shutdown ........................................................................... 9
Maintenance ...................................................................... 9
Slam-Shut Controller Maintenance ....................................10
Spare Parts ........................................................................ 11
Troubleshooting .................................................................12
Parts Lists ..........................................................................12
Schematic Assemblies .......................................................14
INTRODUCTION
Scope of the Manual
This manual provides instructions for installation, startup,
maintenance and spare parts ordering for the BM5 Series
slam-shut valves. It also contains information for the
OS/80X Series slam-shut controller.
Product Description
The BM5 Series slam-shut valves are axial ow type with
a single seat and counterbalanced shutter and are used in
regulating, distribution and transmission stations of suitably
ltered natural gas.
This product has been designed to be used with fuel gases
of 1st and 2nd family according to EN 437, and with other non
aggressive and non fuel gases. For any other gases, other
than natural gas, please contact your local sales agent.
The standard gas pressure devices (safety shut-off
devices - SSD slam-shut type) are those used in the
assemblies dealt with into EN 12186 and EN 12279 and their
use has to be under the provisions into ENs 12186 & 12279.
In the safety slam-shut valves manufactured by Emerson
shall be used additional pressure accessories (e.g. controller
or lters) manufactured and labeled by Emerson.
Emerson will be not responsible for any possible inefciency
due to installation of not own production additional
pressure accessories.
When pressure containing parts of safety slam-shut device
(SSD) valve and controller have different maximum allowable
pressures (PS), the SSD is differential strength type.
BM5 Series Slam-Shut Valve
Figure 1. BM5 Series Slam-Shut Valve

BM5 Series
2
PED CATEGORIES AND FLUID GROUP
According to EN 14382, only in Class A conguration (when
both over and under pressure protections are set up), this
slam-shut valve can be classied like a safety accessory
according to Pressure Equipment Directive PED 2014/68/UE.
The minimum PS between SSD valve and controller shall be
the PS of the safety accessory to comply the provisions of
EN 14382 about integral strength type.
This product in its Class A conguration is a safety
accessory for pressure equipment in the following Pressure
Equipment Directive PED 2014/68/UE categories.
Table 1. PED Category for BM5 Series Slam-Shut Valves
PRODUCT SIZE CATEGORY FLUID GROUP
DN 25-40-50-65-80-100-150 IV 1
Built-in pressure accessories (e.g. controllers Types OS/80
and OS/80-X) conform to Pressure Equipment Directive
PED 2014/68/UE Article 4 section 3 and were designed
and manufactured in accordance with sound engineering
practice (SEP).
Per Article 4 section 3, these “SEP” products must not bear
the CE marking.
CHARACTERISTICS
Body Sizes and End Connection Styles
DN 25 - 40 - 50 - 65 - 80 - 100 - 150
PN 16-25 UNI/ DIN
ANSI 150 - 300 - 600 anged
!
WARNING
Maximum Operating Inlet Pressure(1)(2)
PN 16: 16 bar
PN 25: 25 bar
ANSI 150: 20 bar
ANSI 300: 50 bar
ANSI 600: 100 bar
Overpressure Set Range
0.03 to 80 bar
Underpressure Set Range
0.01 to 80 bar
Minimum/Maximum Allowable Temperature (TS)(1)
See label.
Functional Features
Accuracy Class AG : ± 1%
Response Time ta : ≤ 1 second
Temperature
Standard Version: Working -10° to 60°C
Low Temperature Version: Working -20° to 60°C
Materials
Body: Steel
Sleeve: Steel
O-ring: Nitrile (NBR) rubber or FKM
Pad: Nitrile (NBR) rubber or FKM
Pad holder: Steel
1. The pressure/temperature limits indicated in this instruction manual or any
applicable standard or code limitation should not be exceeded.
2. At average ambient temperature.
LABELLING
xxxx
body
Notified
Note 1
Note 2
Note 4Note 5
Note 3
BOLOGNA ITALY
APPARECCHIO TIPO / DEVICE TYPE
DN2
DN1
bar
bar
bar
bar
PS bar x PS barPSD PT=Bar
pdo
bar DN sede
DN seat
Wds
Wdso
Wdsu
FAIL CLOSE
FAIL OPEN
TARTARINI
MATRICOLA / ANNO
SERIAL Nr. / YEAR
REAZIONE
FAIL SAFE MODE
NORME ARMONIZ.
HARMONIZED STD.
CLASSE DI PERDITA
LEAKAGE CLASS
CLASSE FUNZIONALE
FUNCTIONAL CLASS
FLUIDO GRUPPO
FLUID GROUP
EN
TIPO
TYPE
Cg
TS °C
pmax
/
1
1.5
TM
Figure 2. Label for BM5 Series Slam-Shut Valves
Note 1: See “Characteristics”
Note 2: Year of manufacture
Note 3: Class A or Class B
Only valves with overpressure and underpressure
settings can be classied in Class A.
Note 4: Class 1: -10°/60°C
Class 2: -20°/60°C
Note 5: PN 16 PS: 16 bar
PN 25 PS: 25 bar
ANSI 150 PS: 20 bar
ANSI 300 PS: 50 bar
ANSI 600 PS: 100 bar

BM5 Series
3
OVERPRESSURE PROTECTION
The recommended maximum allowable pressures
are stamped on the slam-shut valve label. Upstream
overpressure protection shall be provided if the inlet
pressure is greater than the maximum operating inlet
pressure (PS).
Downstream side pressure after slam-shut valve’s
intervention shall stay within the actual maximum operating
set-up range to avoid anomalous back pressures that can
damage the slam-shut controller. Downstream overpressure
protection shall also be provided if the slam-shut valve
outlet pressure can be greater than the PS of the slam-shut
controller (differential strength type).
Slam-shut valve operation below the maximum pressure
limitations does not preclude the possibility of damage from
external sources or debris in the line. The slam-shut valve
should be inspected for damage after any intervention.
TRANSPORT AND HANDLING
Established transport and handling procedures shall be
followed to avoid any damage on the pressure containing
parts by shocks or anomalous stresses.
Eyebolts are designed just for handling of equipment weight.
Built-up sensing lines and pressure accessories
(e.g. slam-shut controller) shall be protected by shocks or
anomalous stresses.
ATEX REQUIREMENTS
Application of ATEX Product Directive:
Table 2. Overview
TYPE CLASSIFICATION ATEX
ASSEMBLIES
ATEX
LABELLING
Regulator/SSD Non-electrical
equipment
Not falling under
the 2014/34/EU
Directive
No
Regulator/SSD
+
electrical device
Non-electric
equipment equipped
with an electrical
device falling under
the scope of the
ATEX Directive
2014/34/EU
Constitutes
an assembly
according to
the 2014/34/EU
Directive
II 2 G T
!
WARNING
Carefully follow below instructions for the
usage of “ATEX Assembly” in an
explosive atmosphere.
A non-electrical equipment incorporating an electrical device
(proximity, microswitch...) is an “ATEX Assembly”, and in the
scope of the ATEX Directive 2014/34/EU.
When such equipment(s) is used in a natural gas pressure
control and/or measuring station in compliance with the
following European standards: EN12186, EN12279 and
EN 1776, can be installed in any type of classied zones
according to the Directive 1999/92/EC dated 16 December
1999, in the following conditions:
a) the equipment(s) / electrical circuit is connected to
a suitable and certied intrinsically safe apparatus
(suitable zener barrier)
b) the equipment(s) / electrical circuit is used according
to this instruction manual issued by the manufacturer
and / or available on our website
ATEX Labelling
The nameplate will be installed on the ATEX assembly.
TIPO
TYPE
MATRICOLA
SERIAL NR.
BOLOGNA ITALY
ANNO
YEAR
DESTINAZIONE D’USO
INTENDED USE
II 2 G T
Figure 3. Label for ATEX Assembly
Where:
• Manufacturer: Name and address and/or logo of the
manufacturer
• : Conformity marking to European Directive
• Type: Description of the ATEX Assembly
• Serial Number and Year of Construction
• : Specic marking of explosion protection
• II: Equipment group
• 2: Equipment Category/level of protection 2 = suitable for
zone 1
• G: For gases, vapor or mists
• T: Temperature Class (i.e.: T6 > 85 … ≤ 100 °C)
• Intended Use: Natural Gas infrastructures

BM5 Series
4
Table 3. Characteristics for Type OS/80X Spring Loaded Pneumatic Slam-Shut Controller
Table 4. Characteristics for Type OS/80X Pneumatic Slam-Shut Controller with Type PRX Pilot
TYPE
SERVOMOTOR BODY
RESISTANCE
(bar)
OVERPRESSURE SET RANGE
Wdo (bar)
UNDERPRESSURE SET RANGE
Wdu (bar) BODY MATERIAL
Min. Max. Min. Max.
OS/80X-BP 5
0.03 2 0.01 0.6 Aluminum
OS/80X-BPA-D 20
OS/80X-MPA-D
100
0.5 5 0.25 4
Steel
OS/80X-APA-D 2 10 0.3 7
OS/84X 5 41 4 16
Brass
OS/88X 18 80 8 70
N.B.: 1/4” NPT female threaded connections
TYPE
SERVOMOTOR BODY
RESISTANCE
(bar)
OVERPRESSURE SET RANGE
Wdo (bar)
UNDERPRESSURE SET RANGE
Wdu (bar) BODY MATERIAL
Min. Max. Min. Max.
OS/80X-PN 100 0.5 40 0.5 40 Steel
OS/84X-PN 100 30 80 30 80 Brass
Type OS/80X-PN: Pressure range 0.5 to 40 bar
Appliance made of a Type OS/80X-APA-D set at about 0.4 bar and a variable number of Types PRX/182-PN pilots for overpressure and PRX/181-PN for underpressure,
as many as necessary to control different points of the installation.
Type OS/84X-PN (Safety accessory): Pressure range 30 to 80 bar
Appliance made of a Type OS/84X set at about 20 bar and a variable number of Types PRX-AP/182-PN pilots for overpressure and PRX-AP/181-PN for underpressure,
as many as necessary to control different points of the installation.
N.B.: 1/4” NPT female threaded connections.
SLAM-SHUT CONTROLLER
The BM5 Series slam-shut valves are equipped with the Type OS/80X or OS/80X-PN slam-shut controller. The controllers are supplied
in different models according to set ranges required. The Type BM5 DN 150 is equipped with a reinforced version Type OS/80X-R.
Figure 4. Type OS/80X-BP Slam-Shut Controller

BM5 Series
5
TYPE DN 25 DN 40 DN 50 DN 65 DN 80 DN 100 DN 150
A100 125 145 155 165 195 250
B220 235 245 255 275 295 365
C200 205 215 225 245 270 380
D125 155 165 190 230 275 410
E260 280 300 320 360 410 585
PN 16
I
184 222 254 276 298.5 352.5 451
PN 25 184 - 254 - 298.5 352.5 451
ANSI 150 184 222 254 276 298.5 352.5 451
ANSI 300 197 235 266.5 292 317.5 368.5 473
ANSI 600 210 251 286 311 336.5 394 508
N.B. The C dimensions are indicative and refer to the models with larger dimensions.
The threaded opening for the connection of the control line is 1/4” NPT female.
TYPE DN 25 DN 40 DN 50 DN 65 DN 80 DN 100 DN 150
PN 16/25 - ANSI 150 15 21 26 38 54 83 170
ANSI 300/600 17 25 30 41 62 105 280
DI
A
A
137
137
D
I
160 max
160 max
C
E
C
E
B
VERTICAL INSTALLATION HORIZONTAL INSTALLATION
Figure 5. BM5 Series Dimensions
Table 5. BM5 Series Dimensions (mm)
DIMENSIONS AND WEIGHTS
Table 6. BM5 Series Weights (kg)

BM5 Series
6
Figure 6. Types BM5 and FL Operational Schematic
OPERATION
When this pressure varies beyond setting limits, the
slam-shut controller releases the eccentric shaft and the
valve is brought to its closing position following the
spring thrust.
The slam-shut controller is provided with a manual release
push-button to quickly close the slam-shut valve in case of
emergency or during maintenance/checking operations.
Should the valve be used with pilot-operated pressure
regulators, the supply to pilots should be taken downstream
of the slam-shut valve. For this purpose, BM5 Series valves
feature a threaded hole to be used for supply to pilots; the
hole is normally kept closed by a dowel.
The supply to pilots can be made through a standard joint or
through the suitable stud supplied on request.
Slam-shut Valve
BM5 Series slam-shut valve is essentially made of an axial ow
valve and a controller allowing to keep the valve open.
To keep the shutter open, the slam-shut controller
Type OS/80X or OS/80X-PN are used.
Both series are designed to operate on maximum and
minimum, maximum only, or minimum only pressure.
The valve body features a shutter valve sliding axially and as
a consequence no by-pass is needed for its opening even in
the presence of pressurized gas.
The valve opening can be made only manually by turning
the eccentric shaft counterclockwise.
The seal pad is not hit by the gas ow since it is protected by
the pad holder and as a consequence is not affected by any
possible dirt present in the gas.
When the controlled pressure is within set values of the
slam-shut controller, this remains set and prevents the
rotation of the eccentric shaft.
Type BM5 Type FL
Type PS/79
A
RegulatorSlam-Shut Valve
INLET PRESSURE, Pu
REGULATOR MOTORIZATION
PRESSURE, Pm
DOWNSTREAM OR IN A
SAFE AREA, Pb
STABILIZED PRESSURE, Pup
OUTLET PRESSURE, Pd
A

BM5 Series
7
Figure 7. BM5 Series Connection/Installation Schematics
SLAM-SHUT VALVE WITH TYPE OS/80X CONTROLLER - INSTALLATION IN A LOW PRESSURE REGULATING LINE
SLAM-SHUT VALVE WITH TYPE OS/80X-PN CONTROLLER - OVERPRESSURE AND UNDERPRESSURE CONTROL DOWNSTREAM OF REGULATORS
Type BM5
Type
PS/79-1
Type
PS/79-1
MonitorRegulator
1
Type BM5
Type
PS/79
Type
PS/79
MonitorRegulator
LS
B
A
Jet
(1 mm)
Type
PRX/182-PN
L
S
B
A
Type
PRX/181-PN
NOTE: RECOMMENDED PIPING IS STAINLESS STEEL WITH 10 mm DIAMETER.
DOWNSTREAM OR TO A SAFE AREA
1
LEGEND:
INSTALLATION

BM5 Series
8
INSTALLATION (CONTINUED)
• Ensure that the data found on the slam-shut valve label
are compatible with usage requirements.
• Make sure that slam-shut controller is installed up-right.
• Ensure that the slam-shut valve is mounted in accordance
with the direction of ow indicated by the arrow.
• Make the connection of the pressure control pipe (B),
taking it off a straight section of the downstream pipe, if
possible far from narrow sections, curves, or branches, to
avoid variations in the release values of slam-shut device
caused by turbulence.
!
WARNING
Only qualied personnel should install or
service a slam-shut valve.
Slam-shut valve should be installed,
operated, and maintained in accordance with
international and applicable codes
and regulations.
If the slam-shut valve vents uid or a leak
develops in the system, it indicates that
servicing is required.
Failure to take the slam-shut valve out of
service immediately may create a
hazardous condition.
Personal injury, equipment damage, or
leakage due to escaping uid or bursting
of pressure-containing parts may result
if this slam-shut valve is overpressured
or is installed where service conditions
could exceed the limits given in the
“Characteristics” section, or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by the appropriate code,
regulation, or standard) to prevent service
conditions from exceeding limits.
Additionally, physical damage to the
slam-shut valve could result in personal
injury and property damage due to
escaping uid.
To avoid such injury and damage, install the
slam-shut valve in a safe location.
Before installation, check shall be done if
service conditions are consistent with use
limitations and if its slam-shut device set-up
is in accordance with service conditions of
protected equipment.
All means for venting have to be provided
in the assemblies where the pressure
equipment are installed (ENs 12186 & 12279).
All means for draining have to be provided in
the equipment installed before the slam-shut
valve (ENs 12186 & 12279).
Further the ENs 12186 & 12279, where this product is used:
• Provide the cathodic protection and electrical isolation to
avoid any corrosion
• In accordance with clause 7.3/7.2 of aforesaid standards,
the gas shall be cleaned by proper lters/separators/
scrubbers to avoid any technical & reasonable hazard of
erosion or abrasion for pressure containing parts
Slam-shut valve shall be installed in non-seismic area and
hasn’t to undergo re and thunderbolt action.
Clean out all pipelines before installation of the slam-shut
valve and check to be sure the slam-shut valve has not been
damaged or has collected foreign material during shipping.
Use suitable line gaskets and approved piping and
bolting practices.
Installation must to be done avoiding anomalous stresses on
the body and using suitable joint means (bolts, anges, …)
according equipment dimensions and service conditions.
Install the slam-shut valve in any position desired, unless
otherwise specied, but be sure ow through the body is in
the direction indicated by the arrow on the body.
User has to check and carry out any protection suitable for
assembly’s specic environment.
For outdoor installations, the slam-shut valve should be
located away from vehicular trafc and positioned so that
water, ice, and other foreign materials cannot enter into the
pilot mechanism.
Avoid placing the slam-shut valve beneath eaves or
downspouts, and be sure it is above the probable
snow level.
STARTUP
The built-in slam-shut controller is factory set at approximately
the midpoint of the spring range or the pressure requested, so
an initial adjustment may be required to obtain desired results.
a.
Open t he valve located downstream of the regulator a
small amount so as to allow a minimum gas ow.
b. Slowly open the shut-off valve upstream of the slam-shut
valve a small amount.
c. Turn the reset stem slowly counterclockwise using the
appropriate lever unit. This causes the inlet pressure to

BM5 Series
9
be conveyed to the outlet side of the slam-shut valve, i.e.
downstream of the regulator
d. Wait a few second for the pressure to stabilize.
e.
Repeat the operation described in point c) above, making
sure that levers of slam-shut controller keep the valve open.
f. First slowly open the valve upstream of the Type BM5
completely, then slowly open the valve downstream of
the regulator.
SLAM-SHUT CONTROLLER
ADJUSTMENT
To change the slam-shut controller setpoints (overpressure
and/or underpressure), remove the spring closing cap of
the controller and turn the adjusting screws clockwise to
increase outlet pressure or counterclockwise to
decrease pressure.
Monitor outlet pressure with a test gauge during the adjustment.
SHUTDOWN
!
WARNING
To avoid personal injury resulting from sudden
release of pressure, isolate the slam-shut
valve from all pressure before attempting
disassembly and release trapped pressure
from the equipment and pressure line.
In
case of disassembly of main pressure
retaining parts for checks and maintenance
procedures, external and internal tightness
tests have to be done according to
applicable codes.
MAINTENANCE
(SEE FIGURE 8)
!
WARNING
All maintenance procedures must be carried
out only by qualied personnel.
If necessary, contact our technical support
representatives or our authorized dealers.
The valve and it’s pressure accessories are subject to
normal wear and must be inspected periodically and
replaced if necessary.
The frequency of inspection/checks and replacement
depends upon the severity of service conditions and
according to applicable National or Industry codes,
standards and regulations/recommendations.
In accordance with applicable National or Industry codes,
standards and regulations/recommendations, all hazards
covered by specic tests after nal assembling before
applying the CE marking, shall be covered also after every
subsequent reassembly at installation site, in order to ensure
that the equipment will be safe throughout its intended life.
Before proceeding with any maintenance work, shutoff the
gas upstream and downstream from the valve, also ensure
that there is no gas under pressure inside the body by
loosening the upstream and downstream connections.
Upon completion, check for leaks using suds.
General Maintenance
a. Disconnect all ttings, remove slam-shut valve from the
line and place it in upward vertical position.
b. Mark the position of the outlet anges (key 116) and inlet
ange (key 100), to keep the correct alignment during the
following reassembly phase.
c. Loosen the special screws (key 133) and dismount the
slam-shut controller.
d. Loosen screws (key 135) and remove hub (key 124).
Remove elastic ring (key 122) and dismount parts. Replace
O-rings (keys 120,125 and 126 (for DN 150 also key 130))
and anti-friction rings (key 119). Check bearing (key 128
(for DN 150 also key 131)) and replace it if is necessary.
e. Slowly loosen nuts (key 112) to slowly release spring
(key 114).
f. Remove sleeve (key 117), disk (key 110) and pad holder
(key 101), loosen screw (key 104) and replace pad unit
(key 102). Replace O-ring (key 107), for DN 65 to DN 150
sizes replace also (key 129).
g. Replace O-ring (key 115).
h. Check all moving parts, paying special attention to nickel
plated surfaces. Replace any that are worn or damaged.
i. Clean all stripped-down parts with petrol and dry with
compressed air.
Reassembly
Lubricate all seals with Molykote 55 M or equivalent, being
very careful not to damage them when reassembling.
Reassemble the parts by reversing the above steps.
As you proceed, make sure that parts move freely and
without friction.
In addition:
a. Complete reassembly and make sure to tighten all
screws uniformly.
b. When reassembling the hub (key 124), make sure that
the pawl of shaft unit (key 121) is facing the inlet ange
(key 100).

BM5 Series
10
c. Check that slam-shut sleeve (key 117) opens when shaft
unit (key 121) is rotated counterclockwise.
d. Before reassembling the slam-shut controller, make sure
that the pawl of shaft unit (key 121) is against the sleeve
(key 117). Upon completion of the assembling procedure,
check that slam-shut actuator has been correctly mounted.
e. After the reassembly completion, check the proper
functioning of all parts. Check the valve with soapy water,
making sure there are no leaks.
f. Remount regulator on the line and reestablish all connections.
SLAM-SHUT CONTROLLER
MAINTENANCE (SEE FIGURE 9)
Installation
a. Install the slam-shut controller in a covered area and
protect it against weather agents.
b. Check that data on the plate are compatible with actual
working conditions.
c. Make sure slam-shut controller is installed upright, i.e.
screw (key 49) on top.
CAUTION
Mounting in any other way will jeopardize
controller’s performance.
d. Carry out the connection of gas outlet (A). It must be
derived from the pressure control piping, in a straight
tract, possibly far away from restrictions, curves or
derivations, in order to avoid turbulence that can alter the
trip pressure setpoints.
Startup
a. Using lever, activate slam-shut by turning reset stem
(key 6) in the direction shown by the arrow.
b. Wait until the pressure being controlled stabilizes and
then slowly release lever.
c. Now repeat this procedure, make sure that levers keep
slam-shut controller properly set and that lever (key 33) is
in horizontal position.
Periodical Checks
It is recommended that slam-shut controller be efciency
checked periodically.
Cut-off Test
a. Cut-off the circuit by means of inlet and outlet valves and
disconnect the pressure control pipe (A). The slam-shut
controller should cut-off at minimum pressure (only if so set).
b. Through the pressure control connection, use a small
pump or other appropriate means, to raise the pressure
to normal operating level. Reset slam-shut controller after
cut-off in step a.
c. Simulate pressure increase until maximum pressure cutoff
value is reached.
d. Connect the pressure control slam-shut controller (A) and
set the circuit back to operating conditions by following
the instructions described in the Startup section.
Valve-seal Check
a. Slowly close the valve located downstream.
b. Press the “EMERGENCY” button. This will cause the
immediate closing of slam-shut controller.
c. Loosen a connector in the downstream line of the
slam-shut valve or of the regulator. Check the connector
with soap and water, making sure there are no leaks;
make any necessary repairs otherwise.
Maintenance
Routine slam-shut controller maintenance entails simply
periodic checking of the diaphragm on the Type OS/80X (the
piston lip seal on the Type OS/84X) and the movement of
the levers, i.e. they should move freely with a minimum of
friction. If necessary, lubricate pins with Molykote 55 M
or equivalent.
!
WARNING
For a successful job it is indispensable to
use qualied personnel, possibly calling
on our Technical Support Representatives.
Before starting maintenance, disconnect
impulse connection (A) to make sure there
is no gas under pressure in the slam-shut
controller. When maintenance operations are
nished check the tightness with suds.
Replacing Diaphragm (Type OS/80X Series only)
a. Remove screws (key 27) and cover (key 61).
b. Replace diaphragm (key 62).
c. To remount diaphragm, coat it with grease, set it in place
around the edge of cover (key 61) and evenly tighten
screws (key 27) to ensure proper sealing.
Replacing O-ring (Types OS/84X and OS/88X only)
a. Remove plug (key 61) and extract piston (key 68) from
body (key 60).
b. Replace O-ring (key 67) and lip seal (key 66).
c. Reassemble by reversing the above procedures.

BM5 Series
11
General Maintenance
a. Remove screws (key 40) and casing (key 47).
b. Remove dowels (key 12) and bushing (key 13).
c. Slide off stem (key 6), lever assembly (keys 17 and 2),
balls (key 10) or rollers for Type OS/80X-R, and shim ring
(key 15). Wash parts, replace any if worn.
d. Remove nuts (key 18), levers (keys 20 and 36) and
springs (keys 37 and 21).
e. Remove nut (key 30), screw (key 29) and lever (key 33).
f. Remove minimum adjusting screw (key 49), maximum
adjusting nut (key 50) and springs (keys 53 and 54).
g. Remove cover (key 61) on Type OS/80X, or plug on
Types OS/84X and OS/88X, and proceed as directed in
replacing diaphragm/O-ring section.
h. Remove nut (key 70) and locknut (key 69), then slide off
stem unit (key 57).
i. Loosen screw (key 3), unscrew nut (key 9), remove balls
holder (key 5) and check seals (keys 4 and 8) for wear.
J. Clean all parts with petrol, replace any if worn.
Reassembly
Reassemble all parts by reversing the steps in the general
maintenance section.
As you proceed, make sure all parts move freely without
friction. If necessary, lubricate them with Molykote 55 M
or equivalent.
Make sure to:
a. Narrow the gap between nuts (keys 30 and 18) so that
levers (keys 33, 36, and 20) have minimum play yet move
freely without friction.
b. Before mounting minimum spring (key 54), register
position of lever (key 33) by means of nut (key 70),
locking it into place with locknut (key 69).
CAUTION
The lever (key 33) is in proper position when
it is exactly horizontal and in the center of
the groove of lever (key 36).
c. Now remount lever assembly (keys 17 and 2), balls
(key 10) or rollers for Type OS/80X-R, keeping them in
their seat with grease, and stem (key 6), which is to be
turned so the balls/rollers enter their seats. The stem and
lever assembly should now be tightly tted together.
d. Remount bushing (key 13), make sure that the dowels are
rmly set in the grooves of the stem (key 6).
e. Repeatedly check if pilot resets properly and, lastly,
remount minimum spring (key 54).
f. Always check controller setting.
Minimum and Maximum Setting
a. Make sure that the lever (key 33) is in horizontal position
when slam-shut controller is reset. If necessary, use
nut and locknut (keys 69 and 70) to adjust (see step b,
Reassembly section).
b. Use maximum adjusting nut (key 50) to completely load
maximum pressure spring (key 53). Loosen minimum
adjusting screw (key 49) to completely relieve minimum
pressure spring (key 54).
c. Disconnect pressure control pipe (A).
d. Through the pressure control connection, use a small
pump or other appropriate means to raise the pressure to
normal operating level.
e. Reset slam-shut controller and reduce the pressure until it
reaches minimum cutoff level.
f. Use minimum adjusting screw (key 49) to load spring
(key 54) slowly until pilot is triggered.
g. Repeat procedures (d) and (e) above, making any
necessary adjustment in the setting.
h. Bring pressure back to normal values.
i. Reset controller and raise the pressure until it reaches
maximum cutoff level.
j. Using maximum adjusting nut (key 50), slowly unload
spring (key 53) until cut-off point is reached.
k. Repeat procedures (h) and (i) above, making any
adjustment necessary in the setting.
CAUTION
Whenever minimum or maximum pressure
setting is not required, omit
corresponding steps.
SPARE PARTS
Spare parts storage shall be done by proper procedures
according to national standard/rules to avoid over aging or
any damage.

BM5 Series
12
PARTS LISTS
BM5 Series Slam-Shut Valve
(See Figure 8)
Key Description
100 Inlet ange
101 Pad holder
102* Pad unit
103 Pad retainer
104 Screw
105 Label
106 Rivet
107* O-ring
108 Label support
109 Label
110 Disk
111 Washer
112 Nut
113 Stud bolt
114 Spring
115* O-ring
116 Outlet ange
117 Sleeve
118 Screw
119* Anti-friction ring
120* O-ring
Key Description
121 Shaft unit
122 Elastic ring
123 Pin
124 Hub
125* O-ring
126* O-ring
127 Disk
128 Bearing
129* O-ring
130* O-ring
131 Bearing
132 Spacer
133 Special screw
134 Bushing
135 Screw
136 Eyebolt
137 Lever unit
Table 7. Troubleshooting for BM5 Series Slam-Shut Valve
SYMPTOMS CAUSE ACTIONS
Slam-shut device does not remain set
The actuator impulse intake (A) is not
connected properly Check connections (A)
Downstream pressure coincides with the
maximum or minimum slam-shut settings Check slam-shut settings
Diaphragm (62) is damaged
(Lip seal (66) on Types OS/84X and OS/88X) Replace the diaphragm
Sleeve does not seal properly
Worn seal gaskets Check gaskets
Dirt deposit on sleeve Check sleeve
Shaft unit (121) damaged Check shaft unit
TROUBLESHOOTING

BM5 Series
13
Type OS/80X Series Slam-Shut Controller
(See Figure 9)
Key Description
1 Plate
2 Releasing bushing
3 Screw
4* Gasket
5 Balls holder
6 Stem
7 Roller
8* O-ring
9 Reloading nut
10 Ball (Roller for Type OS/80X-R)
11 Roller
12 Dowels
13 Reloading bushing
14* O-ring
15 Ring
17 Reloading lever unit
18 Self-locking nut
19 Washer
20 Return lever
21 Spring
22 Fulcrum
24 Label
26 Nut
27 Screw
28 Reloading pin
29 Screw
30 Self-locking nut
31 Washer
32 Plate fulcrum
33 Lever
34 Screw
35 Cone
36 Releasing lever
37 Spring
38 Plug
39 Locking pin
40 Screw
41 Indicator pin
42 On-Off indicator
43 Button
44* O-ring
45 Spring
46 Gasket
Key Description
47 Casing
48 Screw
49 Minimum pressure adjusting screw
50 Maximum pressure adjusting nut
51 Pipe assembly
52 Washer
53 Spring
54 Spring
55 Lower spring holder unit
56 Elastic ring
57 Stem unit
58 Spring
59 Plate holding stem unit
60 Top cover (Body for Types OS/84X and OS/88X)
61 Lower cover (Plug for Types OS/84X and OS/88X)
62* Diaphragm
63 Screw
64 Block
65* O-ring
66* Lip seal
67* O-ring
68 Piston
69 Locknut
70 Nut
71 Microswitch
73* Gasket (only for Types BP, BPA-D and MPA-D)
74 Filter
Rubber parts marked with (*) are supplied in the “spare parts
kit”, recommended as stock.
To order the kit it is necessary to communicate to us the type
of the slam-shut valve or slam-shut controller and its
serial number.

BM5 Series
14
Figure 8. BM5 Series Slam-Shut Valve
SCHEMATIC ASSEMBLIES
LM/1499
105
116
106 107 109 106 110 111 112 113100
118
114 115
117
R
E
M
E
M
R
A
I
R
E
G
N
R
G
C
E
Y
M
E
T
E
S
ON
E
R
OFF
OS-80X
O
E
N
Z
A
104103102101
121
122
123
124
125126127128
120 119
108

BM5 Series
15
LM/1499
Figure 8. BM5 Series Slam-Shut Valve (continued)
133
135
136
137 137
135
123
101
102
103
104
129
119 120
121
122
124125
133
134 128
130
131
132
131
126
PAD HOLDER
DN 65 TO DN 150
DN 150 RE-OPENING HUB
DN 150 LEVER UNIT

BM5 Series
16
R
E
M
E
M
R
A
I
R
E
G
N
R
G
C
E
Y
M
E
T
E
S
ON
E
R
OFF
OS-80X
O
E
N
Z
A
6
2
3
5
4
7
15
8
1
9
10
71
12 11
2220 21
19
18
17
1314
40
5
10
6
Figure 9. Type OS/80X Slam-Shut Controller (Standard Version)
LM/1389
DETAIL OF TYPE OS/80X WITH
MICROSWITCH
DETAIL OF TYPE OS/80X-R
REINFORCED FOR TYPE BM5 DN 150
SECTION D-D
SECTION C-C

BM5 Series
17
Figure 9. Type OS/80X Slam-Shut Controller (Standard Version) (continued)
LM/1389
OMT
24
31
32
28
A
A
27 26
3435
36
38 3722
B
30
46
B
C
A
4544
60
29
41 42 19 18 43
47 48 49 50 51
52
53
54
52
55
56
58
57
59
61
62
C
26
48
69
70
33
73
DD
39
SECTION B-B
SECTION A-A

BM5 Series
18
Figure 9. Type OS/80X Slam-Shut Controller (Standard Version) (continued)
LM/1389
62 61
34 59 63
65 34 59 63 64 60 62 61
6465 60
27
34 59 63
64
34 59 63 64 60
6660
27
65 62 61
67
61
68
34 59 63 64 60 66 67
61
74 74
74
73
68
73
27
TYPE OS/80X-APA-D DETAIL TYPE OS/80X-MPA-D DETAIL
TYPE OS/80X-BPA-D DETAIL TYPE OS/84X DETAIL
TYPE OS/88X DETAIL

BM5 Series
19

BM5 Series
Americas
McKinney, Texas 75070 USA
T [phone]
[phone]
Europe
Bologna 40013, Italy
T [phone]
Asia Pacic
Singapore 128461, Singapore
T [phone]
Middle East and Africa
Dubai, United Arab Emirates
T [phone]
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Technologies, Inc. All rights reserved. 09/18.
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