A pressure adjustable radiator cap contains: a body screwed with a pressure adjustment assembly connected with a covering assembly. The pressure adjustment assembly includes a rotatable knob, an adjusting bolt, a push spring, and a holder. The covering assembly includes a rubber gasket, a lid, a positioning spring, and a coupling sleeve. The pressure adjustment assembly abuts against the push spring by using of a connection disc on a lower end of the adjusting bolt, and the riveting portion on the lower end of the adjusting bolt contacts with the coupling sleeve so that the pressure adjustment assembly is connected with the covering assembly. The rotatable knob is rotated to actuate the adjusting bolt to revolve so as to change a screwing force between the adjusting bolt and the body, thus adjust a closing pressure of the covering assembly to water inlet of a water tank.

A pressure relief cap includes a body engageable with a container and rotatable about an axis for coupling or decoupling the body from the container. The pressure relief cap also includes a handle and a motion control mechanism operable to selectively couple the handle to the body. The motion control mechanism includes a clutch plate moveable between an engaged position in which the clutch plate permits torque transfer from the handle to the body, and a disengaged position in which the clutch plate inhibits torque transfer from the handle to the body. The pressure relief cap also includes a relief valve for releasing pressure in response to elevated pressure within the container.

The present application provides a cap assembly and a bottle assembly. The cap assembly includes a cap, an inner cylinder assembly, an elastic member and a blocking member. The cap includes a cap top and a cap side portion. The cap side portion is formed by extending downwardly from an outer edge of the cap top, and the cap top and the cap side portion define a cap cavity. The inner cylinder assembly is connected to the cap top, is arranged in the cap cavity, and forms an annular receiving portion with the cap side portion. The elastic member is arranged in the receiving portion. The blocking member is arranged in the receiving portion below the elastic member. The cap is provided with at least one locking portion for preventing the elastic member and the blocking member from falling from the receiving portion. The cap assembly has a lower height, and gas in a bottle body cavity can be exhausted from the bottle through an exhaust passage during opening of the bottle assembly according to the present application, especially when in an exhaust state.

One general aspect includes a cap for a the overflow reservoir bottle, including a lower cup having a syncline void, said syncline void having by a wall extending above and below at least one surface of the lower cup. The cap also includes an upper cup with an anticline projection nesting adjacent to the syncline void of the lower cup, and said upper cup affixed to the lower cup, with at least one vent to permit gas to traverse the overflow reservoir bottle.

A non-negative pressure radiator cap is provided and includes a pressure valve having a pressure member, disposed inside a body while having an aperture formed therein. The pressure member is pressed based on an increase in pressure of coolant to move coolant toward a reservoir tank. Additionally, a vacuum valve that includes a head part and a neck part moves vertically based on the pressure of the coolant to open or close the aperture. The neck part passes through the aperture from bottom to top. A sealing member is disposed between the pressure valve and the vacuum valve and has an insertion aperture that is formed at a position corresponding to the aperture of the pressure valve. A retainer is further inserted into the aperture and the insertion hole and a guide directs the vacuum valve to move vertically when the vacuum valve is opened or closed.

A coolant filler neck assembly for a pressurized cooling system. The coolant filler neck includes a cylinder housing defining a non-pressurized coolant overflow reservoir; an upper cap member attached to an upper region of the cylinder housing, the upper cap member including an overflow inlet port member arranged internally in the coolant overflow reservoir and a filler pipe member in fluidic communication with the overflow inlet port member and the pressurized cooling system; a first fluid overflow tube member arranged internally in the coolant overflow reservoir to extend in a longitudinal direction though a first region of the non-pressurized coolant overflow reservoir to direct overflow liquid coolant to the non-pressurized coolant overflow reservoir; and a second fluid overflow tube member arranged internally in the coolant overflow reservoir to extend in a longitudinal direction though a second region of the non-pressurized coolant overflow reservoir to direct the overflow liquid coolant from the non-pressurized coolant overflow reservoir to the ambient environment.

A pressure-release sealing cap for a reservoir includes a rotatable platform with a ramp connected to a rotatable enclosure. A movable plunger is connected to a movable pressure-release member with a guide stud and a valve. The guide stud disposed is on the ramp between first and second reference portions of the ramp, while the sealing cap is installed on the reservoir and the guide stud disposed to rotate on the ramp on rotation of the enclosure to lift the valve, to release the excess pressure while concurrently removing the sealing cap from the reservoir. The pressure-releasing member is actuated indirectly to release excess pressure from the reservoir, in a controlled and gradual manner.

A pressure cap for a cooling system of a vehicle may include a reservoir fill port which is mounted at an upper portion of a reservoir in which cooling water is stored in a cooling system of the vehicle; an external cap for closing an upper end portion of the reservoir fill port; a pressure valve disposed in the reservoir fill port to allow the inside and the outside of the reservoir fill portion to fluidically-communicate with each other; a valve seal provided to allow the air to flow from the outside into the internal to the cooling system by being deformed when pressure in the internal to the cooling system is lower than a predetermined pressure; and a positive pressure spring elastically supporting the pressure valve such that the pressure valve closes the internal to the reservoir fill port.

One general aspect includes a cap for a the overflow reservoir bottle, including a lower cup having a syncline void, said syncline void having by a wall extending above and below at least one surface of the lower cup. The cap also includes an upper cup with an anticline projection nesting adjacent to the syncline void of the lower cup, and said upper cup affixed to the lower cup, with at least one vent to permit gas to traverse the overflow reservoir bottle.

A cooling system for a vehicle is provided. The system includes a valve that is disposed at a predetermined position in a cooling channel to discharge bubbles produced in a coolant out of the cooling channel. Additionally, a controller is configured to detect whether bubbles have been produced in the coolant using a rate of pressure change based on a temperature increase in the cooling channel and open the valve in response to detecting that bubbles have been produced.