Abstract: The invention is directed to a closing member of a valve, for example of a gas valve, comprising a body generally circular around a longitudinal axis and with a shoulder, a rubber seal packing disposed around the body on the shoulder and a sleeve disposed around the seal packing and the shoulder. The body comprises a longitudinally extending surface adjacent the shoulder and receiving the seal packing, the surface comprising at least one recess filled by the seal packing.

Abstract: The invention is directed to a closing member of a valve, for example of a gas valve, comprising a body generally circular around a longitudinal axis and with a shoulder, a rubber seal packing disposed around the body on the shoulder and a sleeve disposed around the seal packing and the shoulder. The body comprises a longitudinally extending surface adjacent the shoulder and receiving the seal packing, the surface comprising at least one recess filled by the seal packing.

Abstract: A high pressure diaphragm gas valve comprises a removable seat assembly (32), including a mounting ring (34) and a synthetic seat ring (36), which is fitted in a central seat hole of a mounting ring (34). A nozzle (60) penetrates in a sealed way into a central through hole (38) of the synthetic seat ring (36). A first gas port (28) is arranged in a front face (62) of the nozzle (60). A second gas port is formed by a gas collecting ring channel (30) incorporated into the valve body (12), wherein it surrounds a nozzle shoulder surface (64) of the nozzle (60) and is itself surrounded by an outer shoulder surface (102) of the valve body (12). The mounting ring (34) is supported with an inner ring flange (82) on the nozzle shoulder surface (64) and with an outer ring flange (84) on the outer shoulder surface (102), so that peripheral gas passages (86) open into the ring channel (30).

Abstract: A high pressure diaphragm gas valve comprises a removable seat assembly (32), including a mounting ring (34) and a synthetic seat ring (36), which is fitted in a central seat hole of a mounting ring (34). A nozzle (60) penetrates in a sealed way into a central through hole (38) of the synthetic seat ring (36). A first gas port (28) is arranged in a front face (62) of the nozzle (60). A second gas port is formed by a gas collecting ring channel (30) incorporated into the valve body (12), wherein it surrounds a nozzle shoulder surface (64) of the nozzle (60) and is itself surrounded by an outer shoulder surface (102) of the valve body (12). The mounting ring (34) is supported with an inner ring flange (82) on the nozzle shoulder surface (64) and with an outer ring flange (84) on the outer shoulder surface (102), so that peripheral gas passages (86) open into the ring channel (30).