An insulated HVAC duct component such as a transition box includes a first insulation layer and a second, different insulation layer. The transition box includes at least four sidewalls and one of a top and a back wall, the transition box further including a first access port and a second access port, the first access port having a different cross section than the second access port, one of the access ports being spaced from a nearest sidewall by less than 2 inches. The first insulation layer is located along an inside surface of the box. The second different insulation layer overlies the first insulation layer, the second different insulation layer having an air impervious surface, wherein the combined thickness of the first insulation layer and the second different insulation layer is less than 2 inches.

A fluid handling assembly includes a first pipe. The first pipe includes an inner layer made of a CPVC composition, an intermediate layer made of a metal at least partially surrounding the inner layer, and an outer layer made of a CPVC composition at least partially surrounding the intermediate layer. A first tubular coupling bushing has a first portion and a second portion. The first portion is coupled to the first pipe. The second portion has an engaging portion that is configured to engage to a mechanical fixture that sealingly engages the first pipe and a second pipe. A method of making the fluid handling assembly is also disclosed.

An expansion joint spring clip can eliminate flutter, pulsations and reverse bending on non-metallic fabric flue duct expansion joints. The expansion joint spring clip can hold the expansion joint in a fixed arch such that it can still perform its function with regard to accommodating the ducting system movements. The expansion joint spring clip allows the entire width of the non-metallic expansion joint to retain its position during start-ups, downloading and during full or partial boiler, kiln, furnace loads and the like. The expansion joint spring clip can be installed in the existing geometry of an expansion joint by producing an arch while not damaging the expansion joint after being installed. The expansion joint can still accommodate axial and limited lateral movements, allowing the expansion joint to perform its function.

A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be radially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.

A process for the manufacture of a washing system to clean process equipment and the resulted washing system is disclosed. The method involves the conversion and transformation of a small excavation tractor into a remotely operated hydroblasting system that removes the operator from the working environment and avoids the risks of harm and fatigue normally associated with existing cleaning processes.

An exhaust system for an aircraft galley chiller is provided. The exhaust system includes a galley having a chiller that includes an inlet, a condenser fan inlet, a condenser fan outlet proximate to chiller inlet, and a first flow of air through the condenser, an air ventilation outlet conduit that includes a second flow of air therethrough, and an ejector pump. The ejector pump includes a first airflow inlet, a second airflow inlet and an airflow outlet, wherein the first airflow inlet is coupled in flow communication with the condenser fan outlet, the second inlet is coupled in flow communication with the air ventilation outlet conduit. As the second airflow increases, the first velocity increases in a direction away from the galley chiller facilitating a decrease in temperature at the condenser fan inlet.

An exhaust system for an aircraft galley chiller is provided. The exhaust system includes a galley having a chiller that includes an inlet, a condenser fan inlet, a condenser fan outlet proximate to chiller inlet, and a first flow of air through the condenser, an air ventilation outlet conduit that includes a second flow of air therethrough, and an ejector pump. The ejector pump includes a first airflow inlet, a second airflow inlet and an airflow outlet, wherein the first airflow inlet is coupled in flow communication with the condenser fan outlet, the second inlet is coupled in flow communication with the air ventilation outlet conduit. As the second airflow increases, the first velocity increases in a direction away from the galley chiller facilitating a decrease in temperature at the condenser fan inlet.

A sheath apparatus for housing tubes and/or cables, for incorporation into a flexible pipe body, including: an elongate body portion, comprising an outer surface and a channel for receiving a tube or cable within the body portion, and further comprising at least one opening connecting the channel and the outer surface, wherein the at least one opening comprises a continuous opening extending along the elongate body portion or a plurality of discrete openings at predetermined positions along the elongate body portion, and wherein the channel defines an inner surface of the body portion for contacting the tube or cable.

A grease interceptor system with a corrugated pipe stub that can be obtained and cut to size in the field during installation.

A sensor system (30) including a sensor assembly (10) for a fluid meter (5) is provided. The sensor assembly (10) includes one or more fluid conduits (103A, 103B). The sensor assembly (10) also includes a case (101) surrounding at least a portion of the one or more fluid conduits (103A, 103B). The sensor system (30) also includes a case support (300). The case support (300) surrounds at least a portion of the case (101). The case support (300) includes one or more ribs (330) that extend along at least a portion of the case (101) and contact the case (101) at least when the case (101) deforms outward by a threshold amount.