Abstract: A gate valve structured for the removal and replacement of the valve gate, seats and seals through the flowpath of the valve, a valve body constructed as a single piece of material without covers or valve bonnet to access the seats, gate or interior parts of the valve body, a pair of bolted flanged conduits on each side of the valve body for the attachment to a pipeline and removal of the valve body from the pipeline for access to the body interior for removal of the ring seals and valve seats fitted to the body ports forming the flowpath. The installation or removal of the gate from the valve stem is accomplished by orienting the gate in the valve flowpath, unbolting a split rectangular collar from the stem through a rectangular opening in the gate, and the reorientation of the gate for the removal of a thread protector bolt from the face of the gate, and replacing it by a threaded rod which provides assistance for inserting or extracting the gate through the valve body flowpath.

Abstract: This invention relates to two or more flat flexible membranes segmented into blades for cleaning chimneys and conduits. Said membranes can be lowered into a chimney by gravity and with only light contact with the interior surface of the chimney. The blades comprising the membrane are forced into firm and maintained contact, with the interior surface of the chimney when moved through the chimney in the upward direction.

Abstract: An improved fully automatic motor driven cleaning apparatus, which is permanently installed in a heat insulated compartment over the outlet of the chimney, without any portion of the mechanism extending into or attaching to the chimney or flue. The cleaning device is returned to a position above the chimney outlet after each cleaning cycle. The unit is remotely operated by a separate and detachable control module which plugs into any household electrical outlet.