A fastener-less valve cover plate assembly that can be used to enclose a pressure chamber, such as a valve chamber of a relay valve. Installation of the components of the fastener-less valve cover plate assembly is simplified as compared to prior art cover plates utilizing fasteners, while still providing suitable performance. In addition, the fastener-less valve cover plate assembly is not readily disassembled with common tools thereby discouraging tampering.

A motor vehicle air-conditioning line valve arrangement includes a line valve having an air-conditioning line body which is of substantially closed design in a transverse plane, and a fiber nonwoven arranged on an inside in the air-conditioning line body and having a nonwoven mat to which a large number of nonwoven fibers are fixed. The nonwoven fibers are fixed to the nonwoven mat at one end and configured to be electrostatically charged by the nonwoven mat. An electrical charge generator is electrically connected to the nonwoven mat and configured to electrostatically charge the fiber nonwoven, so that the electrostatically charged nonwoven fibers straighten toward a center of the air-conditioning line body in such a way that they close an open flow cross section of the air-conditioning line body.

A portable inflation device of the present application includes an inflation pump body, an upper casing, a middle casing, a lower casing, a resilient component, and a resilient ventilation plug. The upper casing and the middle casing respectively seal two ends of the inflation pump body, and an air chamber is defined thereamong. An accommodating chamber is defined between the middle casing and the lower casing disposed outside the air chamber. An intake hole, a first ventilation hole and an exhaustion hole are respectively formed on the upper casing, the middle casing and the lower casing. The resilient ventilation plug disposed inside the accommodating chamber includes a perforated foam positioned between the first ventilation hole and the exhaustion hole and an sealing layer covering a surface of the perforated foam facing towards the first ventilation hole. The inflation device is small in volume, collapsible, portable, and easy to operate.

A portable inflation device of the present application includes an inflation pump body, an upper casing, a middle casing, a lower casing, a resilient component, and a resilient ventilation plug. The upper casing and the middle casing respectively seal two ends of the inflation pump body, and an air chamber is defined thereamong. An accommodating chamber is defined between the middle casing and the lower casing disposed outside the air chamber. An intake hole, a first ventilation hole and an exhaustion hole are respectively formed on the upper casing, the middle casing and the lower casing. The resilient ventilation plug disposed inside the accommodating chamber includes a perforated foam positioned between the first ventilation hole and the exhaustion hole and an sealing layer covering a surface of the perforated foam facing towards the first ventilation hole. The inflation device is small in volume, collapsible, portable, and easy to operate.

An electromagnetic effect protective cap assembly for enclosing an end portion of a fastener assembly extending through a structure, includes a sidewall configured to define an interior space and having an end portion of the sidewall which defines a first opening aligned with the interior space which allows passage of the end portion of the fastener assembly through the first opening and into the interior space. The protective cap further includes a second opening which is defined by and extends through the sidewall and is spaced apart from the first opening. In addition, the protective cap further includes a valve member positioned in blocking relationship with respect to the second opening with the valve member positioned between the interior space and an exterior of the sidewall.

An electromagnetic effect protective cap assembly for enclosing an end portion of a fastener assembly extending through a structure, includes a sidewall configured to define an interior space and having an end portion of the sidewall which defines a first opening aligned with the interior space which allows passage of the end portion of the fastener assembly through the first opening and into the interior space. The protective cap further includes a second opening which is defined by and extends through the sidewall and is spaced apart from the first opening. In addition, the protective cap further includes a valve member positioned in blocking relationship with respect to the second opening with the valve member positioned between the interior space and an exterior of the sidewall.

A fastener-less valve cover plate assembly that can be used to enclose a pressure chamber, such as a valve chamber of a relay valve. Installation of the components of the fastener-less valve cover plate assembly is simplified as compared to prior art cover plates utilizing fasteners, while still providing suitable performance. In addition, the fastener-less valve cover plate assembly is not readily disassembled with common tools thereby discouraging tampering.

A fastener-less valve cover plate assembly that can be used to enclose a pressure chamber, such as a valve chamber of a relay valve. Installation of the components of the fastener-less valve cover plate assembly is simplified as compared to prior art cover plates utilizing fasteners, while still providing suitable performance. In addition, the fastener-less valve cover plate assembly is not readily disassembled with common tools thereby discouraging tampering.

A check valve supplies fluid to a system and includes a fluid barrier protects the sealing elements and surfaces of the check valve preventing degradation from any backflow of gas and debris from the system to which fluid is supplied.

A latching valve has a valve body defining a fluid chamber and supply, delivery, and exhaust ports. A solenoid within the chamber includes a pole piece defining a fluid passage between the chamber and exhaust port and having one end facing the exhaust port and another end defining a first valve seat. A coil is disposed about the pole piece. A housing has a portion radially outward of the coil and portions extending radially inwardly on opposite sides of the coil radially aligned with the pole piece and an armature. The armature has one end configured for engagement with the first valve seat and another end configured for engagement with a second valve seat formed in the valve body between the fluid chamber and supply port. A return spring biases the armature towards the second valve seat. A magnet ring is disposed about the armature in contact with the housing.