The present invention provides novel polymeric amine compositions employing amine compounds having multiple tertiary amine groups. First and second end portions of the tubular members are gripped for rotation about their axis. The rail is easy to handle, even with rolled bags included. The impeller includes a spiral fluid pathway relative to direction of substance through the inlet so that the substance passes through the impeller and is distributed to the outlets through a spinning impeller. The valve mechanism includes a slidable disc that seals the connection between the turret body air passage and the ram air passage.