Abstract: A holder releasably mounts a water flow control device to a water supply line to enable installation and removal of the device from a meter "pit". The holder includes a clamping linkage that can be selectively operated from above ground to release or clamp the device in position between saddle members of the holder relative to the water line. Gasket sleeves are mountable over pipe connectors of the water control device and are releasably received in saddle members of the holder. The sleeves are removable with the flow control device.