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The Internal Monitor (IM) is a unique safety feature
available in Actaris / Schlumberger regulators. A Secondary orifice and
valve seat enable an IM regulator to control the flow of gas and to lockup
in the event of a failure at the main seat and orifice. The IM prevents the
venting of large amounts of gas into the atmosphere and does not require
manual resetting. For added safety and overpressure protection, the IM is a
cost-
effective alternative to installing monitor regulators or external relief
valves.IM regulators are designed specifically to comply with a DOT OPS
192. 197 Paragraph B which states, "or if the gas contains materials that
seriously interfere with the operation of a service regulator, there must be
suitable protective devices to prevent unsafe overpressuring of the
customer's appliance if the service regulator fails." The code lists the
devices, one of which is regulator and monitor. The code further states
these devices may be installed as an internal part of the service regulator
or as a separate unit. |
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this sizing chart.
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