A system of visual and non-visual marks for PVC pipes and couplings which allows users to group PVC pipes and couplings by type, size, and composition with a series of colors, shapes, swirls, patterns. The series of colors, shapes, swirls, patterns are applied to the PVC pipes and couplings by etching, painting, applying stickers, and or molding into the PVC itself. The non-visual mark utilize the magnetic and radio reflective nature of the marks to allow remote identification of the plumbing pipes and couplings after being buried.

A system of visual and non-visual marks for PVC pipes and couplings which allows users to group PVC pipes and couplings by type, size, and composition with a series of colors, shapes, swirls, patterns. The series of colors, shapes, swirls, patterns are applied to the PVC pipes and couplings by etching, painting, applying stickers, and or molding into the PVC itself. The non-visual mark utilize the magnetic and radio reflective nature of the marks to allow remote identification of the plumbing pipes and couplings after being buried.

A brazing process includes placing an accessory on a tube and interposing a brazing material between a bearing surface of the tube and a complementary bearing surface of the accessory. The brazing material is melted. The bearing surface and the complementary bearing surface together define a chamber having a converging portion whose height perpendicular to the bearing surface decreases radially away from the orifice. The converging portion of the chamber has a radial width greater than one times the thickness of the tube, so that the brazing material is distributed by capillary action in the chamber, and binds the bearing surface and the complementary bearing surface to one another.

A brazing process includes placing an accessory on a tube and interposing a brazing material between a bearing surface of the tube and a complementary bearing surface of the accessory. The brazing material is melted. The bearing surface and the complementary bearing surface together define a chamber having a converging portion whose height perpendicular to the bearing surface decreases radially away from the orifice. The converging portion of the chamber has a radial width greater than one times the thickness of the tube, so that the brazing material is distributed by capillary action in the chamber, and binds the bearing surface and the complementary bearing surface to one another.

A process including: an assembly step of assembling a sealed case onto an existing pipe; a cutting step of forming a first opening of a groove shape elongated in a pipe axis direction of the existing pipe; a second boring step of forming a circular second opening at a position of the existing pipe that opposes the first opening; and an insertion step of inserting, in a valve-open state, a butterfly-shaped valve element that is integral with a valve rod, which runs through the first and second openings, into the existing pipe 1 through the first opening until a tip portion of the valve rod protrudes from the second opening.

A pressure wave generator with dynamic reflector of pressure impulse is disclosed which comprises an outer fixed and an inner coaxially-rotating cylindrical elements with the given profiled openings of the given shapes and sizes in the solid walls and a dynamic reflector of pressure impulse, configured in the solid wall of the inner rotating cylindrical element having a longitudinal radial-azimuthal variable-concave surface. Such concave surface provides a decomposition of the reflected pressure impulse to a radial and azimuthal component, especially important on the stage of decrease of the pressure amplitude from a maximal value to zero. Variation of the curvature of the radial-azimuthal shape of the concave surface provides a maximal azimuthal component and a minimal radial component of the mechanical reaction of the shaft of the pressure wave generator. The helicoidally-shape of the inner surface of a collector add an azimuthal motion to reflected pressure impulse.

A sewer hose cover is made out of an elongated fabric sheet having a front edge, a rear edge, a first side edge, and a second side edge. The first side edge and the second side edge run along a length of the elongated fabric sheet. A first set of weights are coupled to the elongated fabric sheet along the first side edge. A second set of weights are coupled to the elongated fabric sheet along the second side edge.

A sewer hose cover is made out of an elongated fabric sheet having a front edge, a rear edge, a first side edge, and a second side edge. The first side edge and the second side edge run along a length of the elongated fabric sheet. A first set of weights are coupled to the elongated fabric sheet along the first side edge. A second set of weights are coupled to the elongated fabric sheet along the second side edge.

A hydraulic unit has a hydraulic component, a hydraulic line connected to a hydraulic connection of the hydraulic component, and a hose and fitting connected to the hydraulic connection. A tear-out preventer having a cable loop secured by a cable clamp acts on the hose. The cable clamp comprises a clamping block, which has two crossing passages and a rivet. A first passage, through which the cable is guided, has, in the region of the crossing with the second passage, a width corresponding to at least double the thickness of the cable plus the diameter of the non-deformed rivet. The second passage is configured in a stepped manner with a narrow primary portion arranged on one side of the first passage and a wide secondary portion arranged on the other side. The rivet braces the two strands of the cable against the inner wall of the first passage.

A hose assembly for a hydraulic system, the hose assembly includes: a first hose coupled a pump with a hydraulic actuator using a first port, wherein the first hose comprises a first electronic device configured to provide identification information for the first hose, a second hose coupled with the hydraulic actuator with a hydraulic return component using a second port, wherein the second hose comprises a second electronic device configured to provide identification information for the second hose; and a controller. The controller receives connection signals and identification information for the first hose and the second hose, determines a connection fault based on at least one of the first connection signal and the second connection signal, and adjusts internal operation of a hydraulic manifold.