The present disclosure provides a damper used in heating, ventilation, and air conditioning (HVAC) systems. In an aspect, the damper may include a frame composed of at least two attached frame webs, each frame web comprising a C-shaped component. The damper may further include a damper blade removably attached to each compartment formed by the frame webs.

A method for manufacturing a check valve unit as a liquid flow path member, in which the liquid flow path member includes, in a flow path direction of ink, a first flow path member constituting one side of a flow path, a second flow path member constituting another side of the flow path, and a check valve including a valve body configured to stop a backflow of the ink in the flow path and a check valve holding member configured to hold the valve body, the method includes a welding step for welding the first flow path member or the second flow path member, and the check valve holding member together, and also welding the first flow path member and the second flow path member together.

A modular valve body with a bimetallic option is shown and described herein. The modular valve body generally includes at least one end connector element joined to a housing. The housing may be formed from a first material, such as carbon steel. The end connector element may be formed from a second material, such as monel. In some versions of the modular valve body, in order to join the end connector element and the housing, the end connector element is rotated and pressed against the housing to heat both materials and create a friction weld therebetween.

A modular valve body with a bimetallic option is shown and described herein. The modular valve body generally includes at least one end connector element joined to a housing. The housing may be formed from a first material, such as carbon steel. The end connector element may be formed from a second material, such as monel. In some versions of the modular valve body, in order to join the end connector element and the housing, the end connector element is rotated and pressed against the housing to heat both materials and create a friction weld therebetween.

An assembly and method of assembling a butterfly control valve assembly (such as a throttle body or exhaust gas recirculation valve) having a metal valve shaft with a valve. A plastic end cap is secured into an end of the metal shaft. A plastic valve gear housing is laser welded to the end cap.

A proportional spool valve (1) for adjusting a displaced volume of a displacement pump, in particular of an oil pump in a motor vehicle, the proportional spool valve (1) includes a valve housing (2) and a valve spool (3) which is mounted in the valve housing (2) and displaceable along a displacement axis (V) and which can be displaced against the spring force of a valve spring (6) axially supported on a spring holder (7) which is fixed relative to the valve housing (2) by energizing an electrical coil assembly (10), characterized in that wherein both the preferably single-piece spring holder (7) and the valve housing (2) are made of plastic and that the spring holder (7) is welded to the valve housing (2), an integral welded connection (9) being formed.

The mounting structure of a fuel device is for mounting the fuel device, which includes a plurality of components, on a baffle plate for suppressing waving of liquid fuel stored in a fuel tank. One of the components of the fuel device is integrally formed, as a mounting portion, with the baffle plate. The remaining components of the fuel device are mounted, as a mounted portion, on the mounting portion of the baffle plate.

A method for attaching an object, such as a sight glass (3) or an electrical connector (4), to a structure, such as a valve housing (1), the object (3, 4) comprising an annular flange (6, 11). The object (3, 4) is mounted in an opening (7, 12) of the structure (1) with the annular flange (6, 11) in abutment with an annular edge (8, 13) of the opening (7, 12). The object (3, 4) is attached to the structure (1) by performing welding of the annular edge (8, 13) and the annular flange (6, 11) and displacing the welding beam along the annular flange (6, 11).

A method for attaching an object, such as a sight glass (3) or an electrical connector (4), to a structure, such as a valve housing (1), the object (3, 4) comprising an annular flange (6, 11). The object (3, 4) is mounted in an opening (7, 12) of the structure (1) with the annular flange (6, 11) in abutment with an annular edge (8, 13) of the opening (7, 12). The object (3, 4) is attached to the structure (1) by performing welding of the annular edge (8, 13) and the annular flange (6, 11) and displacing the welding beam along the annular flange (6, 11).

A ball valve (1; 100) comprising a body (2; 102) delimiting an internal cavity, a plug (3; 103) configured to be permanently connected to the body (2; 102), for partially closing the internal cavity, a ball shutter (5) housed in the internal cavity, a first connecting element (18; 118) configured as a hollow tubular element in fluid communication with the ball shutter (5) and wherein the plug (3; 103) comprises a second connecting element (20; 120) configured as a hollow tubular element in fluid communication with the ball shutter (5), wherein the body (2; 102) and the first connecting element (18; 118) together define a monobloc body and wherein the plug (3; 103) and the second connecting element (20; 120) together define a monobloc body without welds.