A suction particle detection system having a wall or ceiling feed-through (100) for fluidically connecting a pipe or hose end (200) to a test environment (300), the wall or ceiling feedthrough (100) comprising a line portion (110), which has a first line end (111) for fluidically connecting to the pipe or hose end (200) of the suction particle detection system and a second line end (112) arranged opposite the first line end (111), wherein the second line end (112) is formed with a suction opening (113), having a fastening means (120) for fixing the wall or ceiling feedthrough (100) within a feedthrough opening (320) of a wall-like or ceiling-like room structure (310), and having a flange-like collar portion (114), which extends starting from the second line end (112) in the radial direction, the fastening means (120) having one or more deflectable springs (121).

An embedded fire-resistant device includes a mounting plate, a container and a fire-resistant member. The mounting plate has a contact surface and a first connection member provided on the mounting plate. The container has an open side and a second connection member provided on the open side. The fire-resistant member is received in the container. The first connection member and the second connection member are configured to slidably couple to or separate from each other so that the mounting plate and the container can engage with or separate from each other. This is a design that benefits in installation and future inspection.

A mounting bracket for a hydrant that is fully concealed by the hydrant head. The mounting bracket is fastened to the structure and includes tabs which engage the hydrant head to tightly secure the hydrant to the structure. The hydrant head includes a structure engaging periphery such that the mounting screws are fully concealed and protected from the environment.

A grommet assembly is configured to be installed within an opening and includes a grommet, a primary seal, and a lock ring. The grommet includes a platform, a panel portion extending from a first surface, and a ring portion extending from a second surface. The ring portion defines a passageway extending through the grommet and includes a plurality of grommet clamping features arranged around the ring portion. The primary seal extends around a periphery of the grommet. The lock ring includes a central hub having a plurality of ring clamping features arranged around the central hub. The displacement of the lock ring relative to the grommet engages each one of the plurality of ring clamping features with a corresponding one of the plurality of grommet clamping features to fasten the lock ring to the grommet to form a secondary seal between the grommet and the lock ring.

A system for sealed venting of a compartment includes a sealing member having a first body portion and a second body portion, an inner sealing member surface defining a central passage passing longitudinally from a first terminal end of the sealing member to a second terminal end of the sealing member, an outer sealing member surface defining an outer circumference of the sealing member, a sealing flange extending radially outward from the outer sealing member surface, and a channel including at least one stop surface. A securing member having a securing flange engages with the second body portion. The channel engages with the aperture defined in the body when the sealing member is inserted into and rotated in the aperture and the sealing flange and the securing flange seal the sealing member to the inner and outer surfaces of the body.

A wall socket, including a pipes-joint assembly including an outlet push-to-release pipe-joint, an inlet push-to-release pipe-joint, and piping for communicating therebetween, the piping including a right angled bending extending from the outlet push-to-release pipe-joint, and a pipe for extending from the right angled bending to the inlet push-to-release pipe-joint, and a panel, for connecting the pipes-joint assembly thereto, and for disposing the pipe of the pipes-joint assembly parallel to the panel.

A coupler assembly (60) for a sub-sea connector including a coupler (18) having an abutment (76) radially outwardly from the coupler body (64), and a radially inwardly extending groove (78) in the coupler body that is longitudinally spaced apart from the abutment. The abutment (76) is configured to engage the rear side of the plate when the coupler is inserted through a rearward opening in the plate. The groove (78) may be longitudinally spaced apart from the abutment such that, when the abutment is engaged with the rear of the plate, the groove is positioned forwardly of the front side of the plate sufficiently to allow a portion of a mounting ring (82) to be inserted into the groove with a portion of the mounting ring protruding radially outwardly from the body to engage an abutment surface at the front side of the plate, thereby restricting axial movement of the body relative to the plate.

A system for sealed venting of a compartment includes a sealing member having a first body portion and a second body portion, an inner sealing member surface defining a central passage passing longitudinally from a first terminal end of the sealing member to a second terminal end of the sealing member, an outer sealing member surface defining an outer circumference of the sealing member, a sealing flange extending radially outward from the outer sealing member surface, and a channel including at least one stop surface. A securing member having a securing flange engages with the second body portion. The channel engages with the aperture defined in the body when the sealing member is inserted into and rotated in the aperture and the sealing flange and the securing flange seal the sealing member to the inner and outer surfaces of the body.

A vehicular tube-holding device includes an outer holder mounted to a vehicle body, the outer holder having an inner holder fastening hole for insertion and fastening of an inner holder and a tube-fixing hole for passage of a tube; and the inner holder inserted into and fastened to the inner holder fastening hole in the outer holder to be in close contact with an outer-diameter portion of the tube.

A stud wire protector includes: a first hollow cylindrical and a second hollow cylindrical member. Methods of inserting the stud wire protector are also provided. The stud-wire protector is also part of an electrical conduit coupling system. The electrical conduit coupling system includes: two or more stud wire protectors and two or more conduit couplers. Methods of attaching the electrical conduit coupling system to two or more studs are also provided.