Emerson Tartarini BM6X Series Instruction Manual

Instruction Manual
D103664X012

August 2018

BM6X Series

SUMMARY

Introduction ........................................................................ 1

PED Categories and Fluid Group ...................................... 2

Characteristics ................................................................... 2

Labelling ............................................................................ 2

Overpressure Protection .................................................... 2

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 ........................................................................ 12

Troubleshooting ................................................................. 12

Parts Lists .......................................................................... 13

Schematic Assemblies ....................................................... 14

INTRODUCTION

Scope of the Manual

This manual provides instructions for installation, startup,
maintenance and spare parts ordering for the BM6X
Series slam-shut valves. It also contains information for the
OS/80X-R Series slam-shut controller.

Product Description

The BM6X Series slam-shut valves are axial ow type and

are used in natural gas reduction, distribution and
transfer stations.

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 not be responsible for any possible inefciency

due to installation of non Emerson 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 the differential strength type.

BM6X Series Slam-Shut Valve

Figure 1. BM6X Series Slam-Shut Valve

BM6X Series

2

PED CATEGORIES AND FLUID GROUP

According to EN 14382, only in integral strength type and
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 and integral strength 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 BM6X Series Slam-Shut Valves

PRODUCT SIZE CATEGORY FLUID GROUP

DN 80-100-150-200-250-300 IV 1

Possible 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 80 - 100 - 150 - 200 - 250 - 300

ANSI 150 - 300 - 600 angeless

!

WARNING

Maximum Operating Inlet Pressure

(1)(2)

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.

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.

Functional Features

Accuracy Class AG : ± 1%

Response Time t

a

: ≤ 1 second

Temperature

Standard Version: Working -10° to 60°C

Low Temperature Version: Working -20° to 60°C

Materials

Body: Steel

Buttery disk: Cast iron or steel

Shaft: Steel

Spring: Stainless steel

Lip seal: FKM

O-ring: NBR nitrile rubber or FKM

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 BM6X 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: ANSI 150 PS: 20 bar

ANSI 300 PS: 50 bar

ANSI 600 PS: 100 bar

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.

BM6X Series

3

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 SSD’s controller.

Downstream overpressure protection shall also be provided
if the slam-shut valve outlet pressure can be greater than the

PS of the pilot (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, vapour or mists

• T: Temperature Class (i.e.: T6 > 85 … ≤ 100 °C)

• Intended Use: Natural Gas infrastructures

BM6X Series

4

SLAM-SHUT CONTROLLER

The BM6X Series slam-shut valves are equipped with the Type OS/80X-R or OS/80X-R-PN slam-shut reinforced version controller. The

controllers are supplied in different models according to set ranges required.

Figure 4. Type OS/80X-BP-R Slam-Shut Controller

Table 3. Characteristics for Type OS/80X-R Spring Loaded Pneumatic Slam-Shut Controller

Table 4. Characteristics for Type OS/80X-R-PN Pneumatic Slam-Shut Controller with Type PRX Pilot

TYPE

SERVOMOTOR

BODY

RESISTANCE

(bar)

OVERPRESSURE SET RANGE

W

do

(bar)

UNDERPRESSURE SET RANGE

Wdu (bar)

BODY

MATERIAL

VALVE FLOW FROM

LEFT TO RIGHT

VALVE FLOW FROM

RIGHT TO LEFT

Min. Max. Min. Max.

OS/80X-BP-S-R OS/80X-BP-R 5

0.03 2 0.01 0.6 Aluminum

OS/80X-BPA-D-S-R OS/80X-BPA-D-R 20

OS/80X-MPA-D-S-R OS/80X-MPA-D-R

100

0.5 5 0.25 4
Steel

OS/80X-APA-D-S-R OS/80X-APA-D-R 2 10 0.3 7

OS/84X-S-R OS/84X-R 5 41 4 16

Brass

OS/88X-S-R OS/88X-R 18 80 8 70

N.B.: 1/4” NPT female threaded connections

TYPE

SERVOMOTOR BODY

RESISTANCE

(bar)

OVERPRESSURE SET RANGE

W

do

(bar)

UNDERPRESSURE SET RANGE

Wdu (bar)

BODY MATERIAL

Min. Max. Min. Max.

OS/80X-R-PN 100 0.5 40 0.5 40 Aluminum

OS/84X-R-PN 100 30 80 30 80 Brass

Type OS/80X-R-PN: Pressure range 0.5 to 40 bar
Appliance made of a Type OS/80X-APA-D-R 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-R-PN (Safety Accessory): Pressure range 30 to 80 bar
Appliance made of a Type OS/84X-R 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.

BM6X Series

5

A

BE

D

C

I

Figure 5. BM6X Series Dimensions

Table 5. BM6X Series Dimensions (mm)

Table 6. BM6X Series Weights (kg)

TYPE DN 80 DN 100 DN 150 DN 200 DN 250 DN 300

A 155 170 220 220 220 220

B 250 290 415 445 480 510

C 54 70 102 135 168 203

ANSI 150

D 190 230 279 343 406 482

E 95 11 5 140 172 203 241

I 197 227 284 342 375 436

ANSI 300

D 210 254 318 381 445 521

E 105 127 159 191 223 261

I 217 245 303 361 407 468

ANSI 600

D 210 274 357 419 508 559

E 105 137 179 220 254 280

I 235 264 354 419 490 531

N.B. The B 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 80 DN 100 DN 150 DN 200 DN 250 DN 300

ANSI 150

10

13

22 38 71 111

ANSI 300 26 40 73 115

ANSI 600 15 33 45 77 121

DIMENSIONS AND WEIGHTS

BM6X Series

6

Figure 6. BM6X Series Operational Schematic

OPERATION

The slam-shut valve can only be opened if the upstream and

downstream pressures are equal.

The Type IT/2V by-pass valve with automatic return makes it
possible to balance these pressures. The valve can only be
opened manually by rotating the pilot reset shaft.

When the controlled pressure lies within the set levels for the
pilot, the latter remains set and prevents rotation of the shaft

while keeping the buttery disk open.

When said pressure changes beyond the set levels, the
buttery disk moves to the closure position.

Slam-shut Valve

The BM6X Series slam-shut valve consists of a “wafer” type
valve body, an pilot and a by-pass valve.

The valve body has an off-center buttery disk that is
mounted eccentrically on the reset shaft.

A lip seal ensures tightness.

The spring thrust, with the additional weight of the eccentric

off-center buttery disk, ensures punctual and safe closure
under any working conditions.

In addition, the compression of the seal, which is determined

by the pressure, ensures perfect tightness.

Lip seal

Spring

Type IT/2V by-pass valve

Controller

Reset shaftControlled pressure

Off-center butterfly shutter

BM6X Series

7

Figure 7. BM6X Series Connection/Installation Schematics

SLAM-SHUT VALVE WITH TYPE OS/80X-R CONTROLLER - INSTALLATION IN A LOW PRESSURE REGULATING LINE

SLAM-SHUT VALVE WITH TYPE OS/80X-R-PN CONTROLLER - OVERPRESSURE AND UNDERPRESSURE CONTROL DOWNSTREAM OF REGULATORS

NOTE: RECOMMENDED PIPING IS STAINLESS STEEL WITH 10 mm DIAMETER.

DOWNSTREAM OR TO A SAFE AREA

1

LEGEND:

INSTALLATION

OS-80X

ON

OFF

E

M

E

R

G

E

N

Z

A

R

I

A

R

M

O

R

E

S

E

T

E

M

E

R

G

E

N

C

Y

Type BM6X

MonitorRegulator

Type
PS/79-1

Type
PS/79-1

Regulator

OS-80X

ON

OFF

E

M

E

R

G

E

N

Z

A

R

I

A

R

M

O

R

E

S

E

T

E

M

E

R

G

E

N

C

Y

Type BM6X

Type
PS/79

Type
PS/79

Monitor

LS

B

A

Jet
(1 mm)

Type
PRX/182-PN

L

S

B

A

Type
PRX/181-PN

BM6X 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 connections as shown in Figure 7. Make the
connection of the pressure control pipe, 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 relevant clauses 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. Slightly and very slowly open inlet valve upstream of

the Type BM6X.

b. Open by-pass valve (key 18) by pressing knob (P). Keep

knob pressed until downstream pressure increases so
as to permit valve disc to become balanced, after which
release knob.

c. Using the appropriate lever, rotate shaft (B) in the

direction shown by the arrow stamped on the controller
cover so as to permit slam shut valve to open. Keep the
valve open manually.

BM6X Series

9

CAUTION

In case you note an excessive resistance

in the opening operation, possible ΔP

upstream/downstream can be the root cause:
repeat above step b to balance upstream and
downstream pressures.

d. Slightly open outlet valve and wait for downstream

pressure to stabilize.

e. Act on shaft (B) several times to make sure that actuator

remains properly latched.

f. First slowly open the valve upstream of the Type BM6X

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 slam­shut 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 FIGURES 9 AND 10)

!

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. Cause the actuator to trigger, remove the impulse line (A)

and take off the slam shut valve from the line.

b. Loosen screws (key 13) and slide the controller out.

c. Remove gasket retaining ring (key 26) and replace

gasket (key 25).

Only for DN 200/250/300: Loosen screw (key 40), remove
gasket retaining ring (key 26) and replace gasket (key 25).

d. Loosen screws (key 10) and remove hub (key 14).

e. Loosen plug (key 6). Loosen screws (key 21), remove

washers (key 22), and shaft lever (key 29).

f.

Rotate the shaft (key 2) for 180° and take off the bracket
(key 27). Dismount the shaft from the Type OS/80X-R side.

CAUTION

The valve shutter (key 24) is free, hold it in

order to prevent it from falling.

g. With the given special wrench dismount the guide bushes

(key 8), and replace O-rings (keys 3 and 5).

h. Check all moving parts, paying special attention to nickel

plated surfaces. Replace any that are worn or damaged.

i. Remove by-pass valve (key 18) and carry

out maintenance.

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.

BM6X Series

10

In addition:

a. Complete reassembly and make sure to tighten all

screws uniformly.

b. During the shaft insertion inside the shutter it’s necessary

to push spring (key 9). Make sure not to damage the shaft

surface, near the guide bushes.

c. When reassembling lever shaft (key 29) replace the

washers (key 22) and apply glue Loxeal 55-03, or
equivalent, to the screws (key 21).

!

WARNING

Check the dimension “C” value indicated on

Table 6. If is necessary adjust, through the
appropriate screw (key 20), the
shutter position.

C

Screw
(key. 20)

Figure 8. Type BM6X Shutter Position

Table 7. Type BM6X Shutter Position Dimensions

TYPE C

BM6X/80 Min. 1 mm - Max 3 mm

BM6X/100 Min. 1 mm - Max 5 mm

BM6X/150 Min. 3 mm - Max 8 mm

BM6X/200 Min. 5 mm - Max 10 mm

BM6X/250 Min. 6 mm - Max 11 mm

BM6X/300 Min. 8 mm - Max 13 mm

d. After the reassembly completion, check the proper

functioning of all parts. Check the valve with soapy water,

making sure there are no leaks.

e.

Remount valve on the line and reestablish all connections.

SLAM-SHUT CONTROLLER
MAINTENANCE
(SEE FIGURE 11)

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).

BM6X Series

11

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-R
(the piston lip seal on the Type OS/84X-R) 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-R 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-R and OS/88X-R 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.

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),

rollers (key 10) 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-R, or plug on

Types OS/84X-R and OS/88X-R, 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 rollers

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).

BM6X Series

12

Table 8. Troubleshooting for BM6X 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 (key 62) is damaged

(Lip seal (key 66) on Types OS/84X-R

and OS/88X-R)

Replace the diaphragm

Sleeve does not seal properly

Worn seal gaskets Check gaskets

Dirt deposit on sleeve Check sleeve

Shaft (key 2) damaged Check shaft

TROUBLESHOOTING

c. Now remount lever assembly (keys 17 and 2), rollers

(key 10), keeping them in their seat with grease, and stem
(key 6), which is to be turned so the 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.

BM6X Series

13

PARTS LISTS

BM6X Series
Slam-Shut Valve
(See Figures 9 and 10)

Key Description

1 Eyebolt

2 Shaft

3* O-ring

4* Antiextrusion ring

5* O-ring

6 Plug

7 Bush

8 Guide bush

9 Spring

10 Screw

11 Needle

12 Controller

13 Special screw

14 Hub

15 Screw

16 Screw

17 Bracket

18 IT/2V by-pass valve

19 Self locking nut

20 Screw

21 Screw

22* Washer

23 Body

24 Shutter

25* Gasket

26 Ring

27 Shaft bracket

28 Pin

29 Shaft lever

30 Bracket

31 Screw

32 Label

33 Rivet

34 Spacer

35 Stud

37 Lever unit

38 Body ring

39 Ring

40 Screw

41 Stud bolt

42 Spring plug

43 Plug

44* O-ring

45* O-ring

OS/80X-R Series
Slam-Shut Controller
(See Figure 11)

Key Description

1 Plate

2 Releasing bushing

3 Screw

4* Gasket

5 Rollers holder

6 Stem

7 Roller

8* O-ring

9 Reloading nut

10 Roller

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

47 Casing

Key Description

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-R and OS/88X-R)

61 Lower cover

(plug for Types OS/84X-R and OS/88X-R)

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.

BM6X Series

14

Figure 9. BM6X Series Slam-Shut Valve DN 80/100/150 Casting Version

SCHEMATIC ASSEMBLIES

10

8

4

11

5

6

33

32

B

8

7

3

7

5

13

30

17

16

15

14

37

31

18

19

9

31

1

B

2

3 4

B

P

A

12

28 29

27

2526

18

35

24

A

21

22

23

20

A

UPSTREAM DOWNSTREAM

SECTION A-A SECTION B-B

TYPE BM6X/150 ANSI 150 DETAIL

BM6X Series

15

Figure 10. BM6X Series Slam-Shut Valve DN 200/250/300 Machined Version

B

P

A

2

3

45

6

8

9

10

11

12

13

14

15

16

17

18

19

1

37

7

A

A

30

31

32

33

31

20

21

22

23

24

26

27

25

28

29

38

39

40

39

28

SECTION A-A

BM6X Series

16

Figure 10. BM6X Series Slam-Shut Valve DN 200/250/300 Machined Version (continued)

39

1

34

17

41

16

43

44

45

42

39 28

38

ANSI 150 DETAIL

TYPE BM6X/200 TYPE BM6X/250/300

TYPE BM6X/200 ANSI 150 DETAIL

TYPE BM6X/300 DETAIL

TYPE BM6X/250/300 DETAIL

BM6X Series

17

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

Figure 11. Type OS/80X-R Slam-Shut Controller Reinforced Version

DETAIL OF TYPE OS/80X-R WITH

MICROSWITCH

SECTION D-D

SECTION C-C

BM6X Series

18

Figure 11. OS/80X-R Series Slam-Shut Controller Reinforced Version (continued)

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

BM6X Series

19

Figure 11. OS/80X-R Series Slam-Shut Controller Reinforced Version (continued)

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-R DETAIL TYPE OS/80X-MPA-D-R DETAIL

TYPE OS/80X-BPA-D-R DETAIL TYPE OS/84X-R DETAIL

TYPE OS/88X-R DETAIL

BM6X 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. 08/18.
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remains solely with the purchaser.

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