Installation Guide

3
About the OpenWay Riva Gas Disconnect
The Itron OpenWay Riva Gas Disconnect (OWRGD) valve is integrated in the piping that
distributes natural gas to provide a safe secure device to stop the gas flow in the piping serving a
residential or commercial structure. The OWRGD enables remote monitoring and control of the
natural gas supply. An optional and externally connected water sensor detects flood water and
initiates an automatic valve closure. In the event of an automatic valve closure due to flooding,
the OWRGD sends an alarm to the head-end system.
Communications with the OWRGD device are sent using messages secured by Itron Security
Manager (ISM). Message security prevents unwanted opening or closure of the valve in the
OWRGD. The ability to remotely disconnect and rearm the OWRGD facilitates safety for field
personnel in what might be an unsafe or hostile environment.
The OWRGD is made up of two separate chambers: the gas chamber and the electronics
chamber.
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The gas chamber houses the gas valve used to shut off the flow of gas. The gas valve shaft
provides a visual indication of the valve position. A special hardware tool is required to re-
engage the valve mechanism. Re-engaging the valve to restore the flow of gas requires a
qualified technician's intervention to send a wireless command to enable the re-engagement
and to use the valve tool to physically open the valve. If the valve was tampered with to force
the valve to remain in an open position, the system reports the tampering.
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The valve engagement mechanism is protected by an industry standard tamper plug.
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The electronics chamber houses the monitoring and wireless radio circuitry. The electronics
chamber is protected with a tamper plug installed over one of the four fasteners. If the
electronics are compromised, the OWRGD reports the event.
The OWRGD can be installed in both horizontal and vertical piping with the flow arrow on the
valve body pointing in the direction of the gas flow.
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