Disclosed herein are devices, systems, and method for multi-stage, reusable coupling. Such a coupler can have a formable flow path and can include a first sealing engagement and a second sealing engagement. The first sealing engagement can be configured to provide a first seal of the coupler at a first temperature condition. The second sealing engagement can be configured to provide a second seal of the coupler at a second temperature condition that is different from the first temperature condition.

An oil change drain valve includes a hollow valve body and a hollow body valve actuator arranged coaxial with the valve body. The valve body is adapted for insertion into an oil pan and houses a check ball and a spring arranged to urge the check ball into a closed position. The valve actuator is adapted for temporary insertion into a lower end of the valve body and includes a bayonet at its upper end. As the valve actuator moves toward the check ball, the bayonet contacts the ball and urges it into an open position. Oil flows through the valve body and actuator unimpeded by any mechanical or moving parts.

An oil change drain valve includes a hollow valve body and a hollow body valve actuator arranged coaxial with the valve body. The valve body is adapted for insertion into an oil pan and houses a check ball and a spring arranged to urge the check ball into a closed position. The valve actuator is adapted for temporary insertion into a lower end of the valve body and includes a bayonet at its upper end. As the valve actuator moves toward the check ball, the bayonet contacts the ball and urges it into an open position. Oil flows through the valve body and actuator unimpeded by any mechanical or moving parts.

A disconnect fitting adapted for use with a phase changing composition including a fitting base having a first fitting base end, a second fitting base end and a fitting base opening therebetween, a pin capture disposed within the fitting base opening, a displaceable pin secured within the pin capture, a fitting socket having a first fitting socket end, a second fitting socket end, a fitting socket opening therebetween, the second fitting socket end secured to the second fitting base end, and a valve at least partially disposed within the fitting socket opening. When the displaceable pin is in an unloaded condition, the displaceable pin extends in a direction of the second fitting base end, and when the displaceable pin is in a loaded condition, the displaceable pin is compressed in a direction of the first fitting base end. The pin capture permits passage of the phase changing composition through the fitting base opening when the displaceable pin is in the unloaded condition or the loaded condition. The disconnect fitting permits a secure connection of the fitting base and the fitting socket regardless of the state the material when the base and socket are disconnected.

A disconnect fitting adapted for use with a phase changing composition including a fitting base having a first fitting base end, a second fitting base end and a fitting base opening therebetween, a pin capture disposed within the fitting base opening, a displaceable pin secured within the pin capture, a fitting socket having a first fitting socket end, a second fitting socket end, a fitting socket opening therebetween, the second fitting socket end secured to the second fitting base end, and a valve at least partially disposed within the fitting socket opening. When the displaceable pin is in an unloaded condition, the displaceable pin extends in a direction of the second fitting base end, and when the displaceable pin is in a loaded condition, the displaceable pin is compressed in a direction of the first fitting base end. The pin capture permits passage of the phase changing composition through the fitting base opening when the displaceable pin is in the unloaded condition or the loaded condition. The disconnect fitting permits a secure connection of the fitting base and the fitting socket regardless of the state the material when the base and socket are disconnected.

There is provided a gas supply socket which can ensure sealing between an outer cylinder and an inner cylinder even when the inner cylinder, inclined with respect to the outer cylinder, is placed in the outer cylinder. The gas supply socket 10 includes an outer cylinder 11, an inner cylinder 12, a movable body 20 disposed within the outer cylinder 11, and a valve body 18 and a valve seat portion 19 provided within the inner cylinder 12. An intermediate cylinder 13 is provided between the outer cylinder 11 and the inner cylinder 12. When the inner cylinder 12, inclined with respect to the outer cylinder 11, is placed in the outer cylinder 11, the inner cylinder 12 and the intermediate cylinder 13 tilt with respect to the outer cylinder 11.

There is provided a gas supply socket which can ensure sealing between an outer cylinder and an inner cylinder even when the inner cylinder, inclined with respect to the outer cylinder, is placed in the outer cylinder. The gas supply socket 10 includes an outer cylinder 11, an inner cylinder 12, a movable body 20 disposed within the outer cylinder 11, and a valve body 18 and a valve seat portion 19 provided within the inner cylinder 12. An intermediate cylinder 13 is provided between the outer cylinder 11 and the inner cylinder 12. When the inner cylinder 12, inclined with respect to the outer cylinder 11, is placed in the outer cylinder 11, the inner cylinder 12 and the intermediate cylinder 13 tilt with respect to the outer cylinder 11.

A coupling unit for a fluid element includes a monolithic body having a head and a threaded portion extending from the head, the threaded portion including a core and a thread formed on the core. The monolithic body defines a first bore and a second bore that extend through the monolithic body substantially parallel to each other, the first and second bores each having a circular cross-section.

A coupling unit for a fluid element includes a monolithic body having a head and a threaded portion extending from the head, the threaded portion including a core and a thread formed on the core. The monolithic body defines a first bore and a second bore that extend through the monolithic body substantially parallel to each other, the first and second bores each having a circular cross-section.

A device for connecting a hose to a water source includes a first connector having a bore between a first and second ends. A spherical plug slides within the bore and includes a plurality of runners spaced around a perimeter of the spherical plug, a gap between each adjacent runner allowing water to flow from one side of the plug to the other through the bore. An elastomeric frustoconical seal is fixed proximate the second end of the bore and adapted to occlude the seal in a disconnected position of the device. A rigid second connector has a frustoconical standoff member adapted to contact the plug through the seal from the second end of the bore of the first connector and move it away from the seal as the second connector is inserted into the first connector, the device achieving a selectable connected position.