A gaseous fluid conditioning module (10, 12) comprising: a gaseous fluid inlet receiving a gaseous fluid at inlet pressure; a gaseous fluid outlet providing the gaseous fluid in a gas phase within a predetermined pressure range; a valve apparatus (30, 30b) regulating flow of the gaseous fluid in the gas phase between the gaseous fluid inlet and the gaseous fluid outlet, the valve apparatus (30, 30b) comprising: a valve (350, 350b) comprising a valve seat (360, 360b) and a valve member (370, 370b) reciprocatable with respect to the valve seat (360, 360b), the valve member (370, 370b) in fluid sealing contact with the valve seat (360, 360b) when the valve (350, 350b) is closed and spaced apart from the valve seat (360, 360b) when the valve (350, 350b) is open; an electromagnet energizable to exert a force on the valve member (370, 370b) to move the valve member (370, 370b) away from the valve seat (360, 360b) thereby opening the valve (350, 350b) to regulate the pressure of gaseous fluid downstream from the valve (350, 350b) within the predetermined pressure range; and a compensation chamber at a distal end of the valve member (370, 370b) opposite the valve seat (360, 360b) into which the valve member (370, 370b) extends, the compensation chamber in fluid communication with the gaseous fluid inlet, the gaseous fluid upstream of the valve (350, 330b) exerting longitudinal forces on a first area of the valve member (370, 370b) in the compensation chamber in the direction of the valve seat (360, 360b) and longitudinal forces on a second area of the valve member (370, 370b) outside the compensation chamber away from the valve seat (360, 360b); wherein the longitudinal forces exerted on the first area of the valve member (370, 370b) in the compensation chamber compensate the valve member (370, 370b) against gaseous fluid inlet pressure. a gaseous fluid inlet receiving a gaseous fluid at inlet pressure; a gaseous fluid outlet providing the gaseous fluid in a gas phase within a predetermined pressure range; a valve apparatus (30, 30b) regulating flow of the gaseous fluid in the gas phase between the gaseous fluid inlet and the gaseous fluid outlet, the valve apparatus (30, 30b) comprising: a valve (350, 350b) comprising a valve seat (360, 360b) and a valve member (370, 370b) reciprocatable with respect to the valve seat (360, 360b), the valve member (370, 370b) in fluid sealing contact with the valve seat (360, 360b) when the valve (350, 350b) is closed and spaced apart from the valve seat (360, 360b) when the valve (350, 350b) is open; an electromagnet energizable to exert a force on the valve member (370, 370b) to move the valve member (370, 370b) away from the valve seat (360, 360b) thereby opening the valve (350, 350b) to regulate the pressure of gaseous fluid downstream from the valve (350, 350b) within the predetermined pressure range; and a compensation chamber at a distal end of the valve member (370, 370b) opposite the valve seat (360, 360b) into which the valve member (370, 370b) extends, the compensation chamber in fluid communication with the gaseous fluid inlet, the gaseous fluid upstream of the valve (350, 330b) exerting longitudinal forces on a first area of the valve member (370, 370b) in the compensation chamber in the direction of the valve seat (360, 360b) and longitudinal forces on a second area of the valve member (370, 370b) outside the compensation chamber away from the valve seat (360, 360b); wherein the longitudinal forces exerted on the first area of the valve member (370, 370b) in the compensation chamber compensate the valve member (370, 370b) against gaseous fluid inlet pressure. a valve (350, 350b) comprising a valve seat (360, 360b) and a valve member (370, 370b) reciprocatable with respect to the valve seat (360, 360b), the valve member (370, 370b) in fluid sealing contact with the valve seat (360, 360b) when the valve (350, 350b) is closed and spaced apart from the valve seat (360, 360b) when the valve (350, 350b) is open; an electromagnet energizable to exert a force on the valve member (370, 370b) to move the valve member (370, 370b) away from the valve seat (360, 360b) thereby opening the valve (350, 350b) to regulate the pressure of gaseous fluid downstream from the valve (350, 350b) within the predetermined pressure range; and a compensation chamber at a distal end of the valve member (370, 370b) opposite the valve seat (360, 360b) into which the valve member (370, 370b) extends, the compensation chamber in fluid communication with the gaseous fluid inlet, the gaseous fluid upstream of the valve (350, 330b) exerting longitudinal forces on a first area of the valve member (370, 370b) in the compensation chamber in the direction of the valve seat (360, 360b) and longitudinal forces on a second area of the valve member (370, 370b) outside the compensation chamber away from the valve seat (360, 360b); wherein the longitudinal forces exerted on the first area of the valve member (370, 370b) in the compensation chamber compensate the valve member (370, 370b) against gaseous fluid inlet pressure.