A self closing tap (102) comprising a cartridge (12) and a tap handle interface is disclosed. The cartridge (12) comprises a piston (122), and a plunger (32). The piston (122) is comprised of a piston head (124), and a piston shaft (126), the piston shaft (126) has a longitudinal axis (A) and is fixed to the piston head (124) at a first end, and the second end of the piston shaft (126) is an engagement end (182). The plunger (32) is movably fixed to a first portion of the piston shaft (126) and adapted to move longitudinally along the first portion of the piston shaft (126). The plunger (32) has a first and second end with the second end of the plunger (32) being closer to the engagement end (182) of the piston shaft than the first end, the tap handle interface comprises a first and second recess (186, 154), the first recess (186) is adapted to receive the engagement end (182) of the piston shaft (126) and prevent rotation of the piston shaft (126) around its longitudinal axis (A), and the second recess (154) is adapted to receive at least the second end (126) of the plunger (32) and to prevent rotation of the plunger (32) around the piston shaft (126).

A self closing tap (102) comprising a cartridge (12) and a tap handle interface is disclosed. The cartridge (12) comprises a piston (122), and a plunger (32). The piston (122) is comprised of a piston head (124), and a piston shaft (126), the piston shaft (126) has a longitudinal axis (A) and is fixed to the piston head (124) at a first end, and the second end of the piston shaft (126) is an engagement end (182). The plunger (32) is movably fixed to a first portion of the piston shaft (126) and adapted to move longitudinally along the first portion of the piston shaft (126). The plunger (32) has a first and second end with the second end of the plunger (32) being closer to the engagement end (182) of the piston shaft than the first end, the tap handle interface comprises a first and second recess (186, 154), the first recess (186) is adapted to receive the engagement end (182) of the piston shaft (126) and prevent rotation of the piston shaft (126) around its longitudinal axis (A), and the second recess (154) is adapted to receive at least the second end (126) of the plunger (32) and to prevent rotation of the plunger (32) around the piston shaft (126).

A light-touch water-saving valve of the invention uses the conversion of steel balls for various controls. First, a shifting steel ball are used to transfer the transverse shear force of a guide plate into the longitudinal thrust to open and close the valve, and then a constant-flow steel ball is used to clamp a valve seat to fix the valve to achieve a constant flow control. When a user releases a brake rod, the valve is automatically closed by a restoration spring. At the same time, the shifting steel ball is pressed by a packing spring, and then the ball grooves on the two sides of the guide plate are pressed to lock the valve to a normally opening operation.

A light-touch water-saving valve of the invention uses the conversion of steel balls for various controls. First, a shifting steel ball are used to transfer the transverse shear force of a guide plate into the longitudinal thrust to open and close the valve, and then a constant-flow steel ball is used to clamp a valve seat to fix the valve to achieve a constant flow control. When a user releases a brake rod, the valve is automatically closed by a restoration spring. At the same time, the shifting steel ball is pressed by a packing spring, and then the ball grooves on the two sides of the guide plate are pressed to lock the valve to a normally opening operation.

A normally closed valve according to the invention comprises a closure delay system utilizing the effect of vacuum on a flexible suction cup to generate a force that keeps the valve open when in an open orientation for a preset time period. The valve further comprises a closure delay mechanism including an actuator shaft and a suction cup disposed in a cavity, being configured for downward reciprocating movement, wherein the suction cup engages the cavity top wall when the valve is in closed orientation thereby closing the valve, and adhering to a suction surface of the cavity when the actuator shaft moves under pressure for switching the valve from closed to open orientation thereby opening the valve. The suction cup automatically disengages the suction surface a preset time period after pressure ceases to be applied to the actuator shaft and reengages the cavity top wall thereby closing the valve.

A normally closed valve according to the invention comprises a closure delay system utilizing the effect of vacuum on a flexible suction cup to generate a force that keeps the valve open when in an open orientation for a preset time period. The valve further comprises a closure delay mechanism including an actuator shaft and a suction cup disposed in a cavity, being configured for downward reciprocating movement, wherein the suction cup engages the cavity top wall when the valve is in closed orientation thereby closing the valve, and adhering to a suction surface of the cavity when the actuator shaft moves under pressure for switching the valve from closed to open orientation thereby opening the valve. The suction cup automatically disengages the suction surface a preset time period after pressure ceases to be applied to the actuator shaft and reengages the cavity top wall thereby closing the valve.

A valve for one-way transfer of air from vacuum storage bags, including a body, a flat diaphragm made of a flexible material, and a holder for securing the diaphragm to the body; a central portion of the body includes an air passage; the diaphragm has a first position where the air passage is covered by a central portion of the diaphragm thus blocking air flow through the air passage, and a second position where the central portion of the diaphragm is reversibly moved away from the air passage thus allowing air flow through the air passage; the diaphragm is secured between the body and the holder, at its three or more distinct edge portions of the diaphragm. A vacuum storage bag equipped with the valve.

A valve for one-way transfer of air from vacuum storage bags, including a body, a flat diaphragm made of a flexible material, and a holder for securing the diaphragm to the body; a central portion of the body includes an air passage; the diaphragm has a first position where the air passage is covered by a central portion of the diaphragm thus blocking air flow through the air passage, and a second position where the central portion of the diaphragm is reversibly moved away from the air passage thus allowing air flow through the air passage; the diaphragm is secured between the body and the holder, at its three or more distinct edge portions of the diaphragm. A vacuum storage bag equipped with the valve.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.