Abstract: A low-profile one-way valve assembly that attaches to a liquid conduit. A valve fitting supports a recessed, bi-leaflet, elastomer valve piece. A compound curvature at a valve base, raised seal forming surfaces at provided leaflets, tapered extension surfaces at the leaflets and a tailored sidewall thickness profile at the leaflets assures a durable watertight sealing action at the flexible valve piece. An O'ring mounted to a threaded fitting surface seals the assembly relative to a supporting conduit. A cover is also provided to protect the valve piece from external damage and significant back pressures.

Abstract: A low-profile one-way valve assembly that attaches to a liquid conduit. A valve fitting supports a recessed, bi-leaflet, elastomer valve piece. A compound curvature at a valve base, raised seal forming surfaces at provided leaflets, tapered extension surfaces at the leaflets and a tailored sidewall thickness profile at the leaflets assures a durable watertight sealing action at the flexible valve piece. An O'ring mounted to a threaded fitting surface seals the assembly relative to a supporting conduit. A cover is also provided to protect the valve piece from external damage and significant back pressures.

Abstract: The present invention relates to a folder device and method of use in conjunction with a sorting device. The sorting device for use with the folder device may assume a variety of configurations. The present invention provides a folder device for receiving items for use with a sorting device. In one embodiment a first side of the folder is configured in relation to the leading edge of its associated partition element so that at least a portion of the first side does not extend vertically past the leading edge. The present invention further provides a method of creating a delivery point package. The delivery point package may facilitate the delivery of mail items by providing a discrete package by capturing items between the folder sides.