A cap for closing an open end of a duct tube has a cylindrical side wall having a length between a closed end and an open end of the side wall. An end wall extends across the closed end of the side wall. A conical section of the side wall extends outwardly from the open end of the side wall and has an interior surface configured to guide an end of a duct tube into a hollow interior volume of the side wall. A groove in an interior surface of the side wall is configured to receive a bead around an end of a duct tube inserted through the conical section and into the hollow interior of the side wall. A plurality of pull tabs extend outwardly from the conical section and are configured to be manually pulled, pulling the cap over the end of the duct tube.

A safety device comprises a main body that extends along a longitudinal axis, a first coupling portion and a second coupling portion, and a first sleeve and a second sleeve. The first and second sleeves are arranged on the main body so as to be movable along the longitudinal axis. The first and second sleeves and the main body are selectively movable into a position in which at least one of the first sleeve or the second sleeve cover the associated first coupling portion and second coupling portion. The covering sleeve can be locked in that position. An arrangement comprising a control head and a drive with the safety device and a method for arranging the drive and the safety device are also described.

A sewer cap removal socket. The sewer cap removal socket includes a base plate. The base plate is defined by a first side oppositely disposed of a second side. An upper wall extends from the first side of the base plate. The upper wall forms a first interface. A lower wall extends from the second side of the base plate, opposite of the upper wall. The lower wall defines a second interface. An aperture is disposed in the base plate.

Aspects of the present disclosure relate to retainer nut locking apparatus and methods for fluid ends, and associated components thereof. In one implementation, a method of operating a fluid end includes installing a retainer nut assembly on a fluid end body by turning a retainer nut in an installation direction and into a bore formed in the fluid end body. The retainer nut has a first surface that faces away from the fluid end body and a second surface that faces that fluid end body. The method also includes rotating a locking tab in a locking direction and into contact with an inner surface of the fluid end body. The locking direction is opposite of the installation direction. The locking tab is disposed inside the bore and adjacent to the second surface of the retainer nut.

Disclosed herein is a kinetically deposited metal ring seal. In particular, disclosed herein is a joint assembly including a housing, a component, and a seal assembly. The housing defines an opening and a central axis. The component is positioned proximate the opening of the housing. The seal assembly comprises a kinetically deposited metal layer attaching the housing to the component and forming an airtight barrier around the central axis between the housing and the component. The kinetically deposited metal layer comprises a plurality of plasticized metal particles. Accordingly, the kinetically deposited metal layer can be applied at low temperatures, ensuring the temperature stays below the activation temperature of loaded fuel. Further, the kinetically deposited metal layer forms a low volume, airtight seal, which does not degrade over time, and does not require application of high forces to maintain the seal.

The block fitting assembly comprises a male block having a projecting portion extending from a planar face thereof and a sealing and capping element configured for engagement with the male block. The sealing and capping element includes a face portion for engaging the planar face of the male block and a cap portion projecting from the face portion. The cap portion includes a circumferentially extending sidewall having a webbed portion and a cover portion. The cover portion of the sidewall is configured to be separated from the cap portion by a tearing or shearing of the cap portion at the webbed portion of the sidewall.

The block fitting assembly comprises a male block having a projecting portion extending from a planar face thereof and a sealing and capping element configured for engagement with the male block. The sealing and capping element includes a face portion for engaging the planar face of the male block and a cap portion projecting from the face portion. The cap portion includes a circumferentially extending sidewall having a webbed portion and a cover portion. The cover portion of the sidewall is configured to be separated from the cap portion by a tearing or shearing of the cap portion at the webbed portion of the sidewall.

A closure is provided for a pressure vessel or pipelines that can provide quick and easy access to the interior of a pressure vessel or pipeline and means for a pressure tight seal between the hub and door. The closure can incorporate means for mechanically fastening the door to the hub using an external split clamp ring actuated by a toggle mechanism. A locking mechanism can be provided to safeguard against unintended closure actuation and provides a layer of redundancy to the holding characteristics of the toggle mechanism. The locking mechanism can be interlocked to a pressure alert system to ensure any differential pressure condition contained within the closure is detected prior to disengaging the locking mechanism and actuating the toggle mechanism.

A closure is provided for a pressure vessel or pipelines that can provide quick and easy access to the interior of a pressure vessel or pipeline and means for a pressure tight seal between the hub and door. The closure can incorporate means for mechanically fastening the door to the hub using an external split clamp ring actuated by a toggle mechanism. A locking mechanism can be provided to safeguard against unintended closure actuation and provides a layer of redundancy to the holding characteristics of the toggle mechanism. The locking mechanism can be interlocked to a pressure alert system to ensure any differential pressure condition contained within the closure is detected prior to disengaging the locking mechanism and actuating the toggle mechanism.

A device for preventing refrigerant leaks in air conditioning system service ports includes a quick coupler for engaging the service port. A main body is disposed adjacent the coupler. A stem is movable inside the main body and a first sealing element is adjacent the stem. A head which is fastened to the main body has an internal thread and a second sealing element is disposed within the head. A shaft has an external thread to be screwed into the internal thread of the head. The shaft has an end with a recess to be engaged by a tool and the shaft has a free end remote from the recess for contacting the second sealing element, for pushing the second sealing element against the stem and for pushing the first sealing element adjacent the stem against an end of the service port upon turning the shaft.