Since we are not yet officially integrated with Vera, the Dome Water Main Shut-Off is recognized out of the box in Vera as a Light Switch/Bulb (see figure 1.) To pair, click "Add a Device" in the Devices section, search for “Generic Z-Wave Devices” (near the bottom of the list,) and rename it after it is paired to help tell it apart from actual lighting devices. The light will normally appear to be “on," when the water is flowing, and will be “off" when the valve is closed (water is not flowing.) You can use the Water Main Shut-Off in your scene actions, so you can automatically shut-off your water if a leak is detected - configure the scene to “Turn Off” the Shut-Off device in the scene (fig. 2) to stop the water flow. Note that this was tested with Vera UI7.
Fig 1 - how the Valve appears in Vera when open.
Fig 2 - How it will look when you use the valve in a scene - in this example, the valve will close when the scene is triggered.