7
Type BM5A
Installation
▲
WARNING
Personal injury or equipment damage,
due to 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 Specification section
and on the appropriate nameplate or
where conditions exceed any rating of the
adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure limiting
devices to prevent service conditions
from exceeding those limits. Also, be sure
the installation is in compliance with all
applicable codes and regulations.
Additionally, physical damage to the slam
shut valve could break the slam shut
controller off the main valve, causing
personal injury and property damage due
to bursting of pressure containing parts.
To avoid such injury and damage, install
the slam shut valve in a safe location.
Installation procedures performed
by unqualified personnel may result
in improper adjustment and unsafe
operation. Either condition may result in
equipment damage or personal injury.
Only a qualified person shall install or
service the Type BM5A slam shut valve.
General Installation Requirements
△
CAUTION
Slam shut controller must be mounted
as shown in Figure 6. If mounted
any other way, the controller will not
function properly.
• Follow the provisions of EN 12186 and EN 12279 in
installing Type BM5A slam-shut valve:
– Provide all means of appropriate draining
methods in the equipment installed before the
slam-shut valve.
– Provide the cathodic protection and electrical
isolation to avoid any corrosion.
– Clean the gas using proper filters, separators
or scrubber to avoid any hazard of erosion
or abrasion of pressure containing parts
(clause 7.3/7.2).
• Ensure that the data found on the slam-shut valve
and slam-shut controller label are compatible with
usage requirements.
• Ensure the slam-shut is not damaged and remove
all foreign materials that might have collected
during shipping. Clean out all pipelines before
installing the slam-shut valve.
• Install the slam-shut valve in any position desired,
unless otherwise specified, but be sure flow
through the body matches the direction indicated
by the flow arrow stamped on the valve body.
• Install the slam-shut controller upright.
• Do not apply excessive external pressure or stress
on the body during installation.
• Use suitable line gaskets and bolting.
• Check and add any protection suitable for
specific environment.
• For outdoor installations, locate the slam-shut
devices away from vehicular traffic. Orient it in
correct position such that water, ice or other foreign
materials cannot enter into the device. Avoid
placing the slam-shut valve beneath eaves or
downspouts, and be sure it is above the probable
snow level. Install slam-shut valve in non-seismic
area and places away from fire or lightning.
• To avoid variations in the release values of
slam-shut valve and alteration of the trip pressure
setpoints of the slam-shut controller, make
pressure control line connection in a straight pipe
and away from bends, elbows or other areas of
turbulent flow.
Minimum and/or Maximum Setting
△
CAUTION
Whenever minimum or maximum
(UPSO or OPSO) pressure setting is not
required, omit corresponding steps.
The slam-shut controller is factory set at approximately
midpoint of the spring range or at customer specified
set pressure. However, a field adjustment may
be required to obtain desired results. Perform the
following steps to achieve the correct settings.
1. 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 the lever (see step 2,
Reassembly section).
