An attachable, detachable pressure reducing regulator for use with a primary high-pressure gas source, wherein the high-pressure chamber of said regulator includes a secondary gas IN portal, with a one-way valve, through which the primary container source may be refilled from an external gas source, via the high-pressure chamber of the said regulator, either independently of or concurrently during its use as a pressure reducing regulator.

A flow and pressure stabilization device includes a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber, the deformable bladder comprising a longitudinally protruding portion shaped such that, when a pressure in the gas chamber is greater than a pressure in the first fluid chamber, the longitudinally protruding portion extends toward the first fluid chamber; and a valve in fluid communication with a fluid outlet, the valve including: a second fluid chamber in fluid communication with the first fluid chamber; a fluid port in fluid communication with the fluid outlet; and a deformable diaphragm positioned adjacent to and biased toward the fluid port.

Disclosed is a load-sensing multi-way valve work section comprising a valve body, which comprises a compensation valve and a reversing valve both formed therein, wherein the compensation valve is provided with a compensation valve bore formed in the valve body and a compensation valve spool accommodated in the compensation valve bore, with a compensation valve oil inlet chamber, a compensation valve oil outlet chamber, a spring-side control chamber and a springless-side control chamber all being formed inside the compensation valve bore; wherein the reversing valve is provided with a reversing valve bore formed in the valve body and a reversing valve spool accommodated in the reversing valve bore, the reversing valve spool being configured to control communications among a main oil inlet chamber, a first working oil chamber, a second working oil chamber, a first oil return chamber, a second oil return chamber, a first load-sensing feedback pressure sensing opening and a second load-sensing feedback pressure sensing opening formed in the reversing valve bore, the compensation valve oil outlet chamber being communicated to the main oil inlet chamber; and wherein the load-sensing multi-way valve work section also defines a feedback passage formed within the valve body, the feedback passage being configured to communicate one of the first and second load-sensing feedback pressure sensing openings with the spring-side control chamber depending on a position of the reversing valve spool in the reversing valve bore.

An integrated pressure regulator is provided with three stages configured to reduce an extreme tank pressure down to a typical working pressure. The regulator is configured to supply a steady working pressure until the tank pressure is reduced to little more than the working pressure itself. Stages of the pressure regulator are integrated into a body and arranged to minimize regulator mass and volume. A thermally-triggered pressure relief device may be included with a triggering time adapted to enhance the safety of smaller cylinders that may be used, e.g., in aerial applications.

One aspect relates to an engine including a working system, having a first piston-cylinder system, comprising a working piston and a working cylinder. The working piston divides the working cylinder into a first working cylinder portion and a second working cylinder portion, a valve system, having a first valve connection and a valve element. The valve system and the working system are connected in a gas conducting manner, the first valve connection can be connected to a negative pressure source, and the valve element is movably arranged in the valve system such that, in a first valve position, the valve element connects the first valve connection to the first working cylinder portion, and, in a second valve position, connects the first valve connection to the second working cylinder portion in a gas conducting manner.

A regulator for hydrogen or other media can include a regulator body and an inlet into the regulator body. A first regulator stage can be downstream of the inlet and a second regulator stage can be downstream of the first regulator stage. An interstage passage can extend between the first and second regulator stages and an outlet from the regulator body can be downstream of the second regulator stage. The first regulator stage can include a first valve seat, a first valve stem, and a first sensor configured to transmit pressure force to urge the valve stem toward the valve seat. The second regulator stage can include a second valve seat, a second valve stem, and a second sensor configured to transmit pressure force to urge the second valve stem toward the second valve seat.

The protection device has a valve and a valve actuator, able to move the valve to a closed position when a pressure upstream of the valve exceeds a predetermined threshold pressure. The valve actuator includes a biaiser, to maintain the valve in an open position; an actuation mechanism, to move the valve to the closed position, the actuation mechanism with a fluid sampling passage to fluidly connect the flow line to a fluid actuated surface of the actuation mechanism. At least a rupture element preventing the passage of fluid from the flow line when the pressure upstream of the rupture element is lower than the threshold pressure, the rupture element being able to break at the threshold pressure.

The protection device has a valve and a valve actuator, able to move the valve to a closed position when a pressure upstream of the valve exceeds a predetermined threshold pressure. The valve actuator includes a biaiser, to maintain the valve in an open position; an actuation mechanism, to move the valve to the closed position, the actuation mechanism with a fluid sampling passage to fluidly connect the flow line to a fluid actuated surface of the actuation mechanism. At least a rupture element preventing the passage of fluid from the flow line when the pressure upstream of the rupture element is lower than the threshold pressure, the rupture element being able to break at the threshold pressure.

A multi-stage gas pressure reduction system includes a first pressure regulator, the first pressure regulator positioned to receive gas at supply pressure from an inlet and to output gas at a first intermediate pressure. The multi-stage gas pressure regulation system includes a second pressure regulator, the second pressure regulator positioned to receive gas at the first intermediate pressure from the first pressure regulator and to output gas at a second intermediate pressure. The multi-stage gas pressure regulations system includes a third pressure regulator, the third pressure regulator positioned to receive gas at the second intermediate pressure from the second pressure regulator and to output gas at a third intermediate pressure to an outlet.

A vaporization device includes a cartridge having a reservoir that holds a vaporizable material, a heating element, and a wicking element that can draw the vaporizable material to the heating element to be vaporized. The wicking element can include two ends in contact with the reservoir. The cartridge can include an airflow control feature for controlling airflow in the cartridge.