A regulator for compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the gas inlet and gas outlet; a pressure reducer with, in the gas passage, a shut-off device and a movable assembly operatively connected to the shut-off device and delimiting with the body a regulating chamber downstream of the shut-off device; a pressure relief device in the gas passage downstream of the regulating chamber; and a flow restriction in the gas passage upstream of the shut-off device, dimensioned for reducing the gas pressure at the gas outlet under a maximum pressure value when the pressure relief device is opened and the shut-off device is opened.

A regulator for compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the gas inlet and gas outlet; a pressure reducer with, in the gas passage, a shut-off device and a movable assembly operatively connected to the shut-off device and delimiting with the body a regulating chamber downstream of the shut-off device; a pressure relief device in the gas passage downstream of the regulating chamber; and a flow restriction in the gas passage upstream of the shut-off device, dimensioned for reducing the gas pressure at the gas outlet under a maximum pressure value when the pressure relief device is opened and the shut-off device is opened.

A regulator valve assembly may comprise: a housing defining an actuator cavity and a piston head cavity; a piston rod comprising a piston head disposed within the piston head cavity and a rod end disposed within the actuator cavity; and a disc retainer within the housing. The actuator cavity can have a top region of the actuator cavity and a bottom region of the actuator cavity. The piston head cavity can comprise a regulator inlet and an inlet port. The disc retainer can be coupled to a proximate seating surface of the inlet port, wherein a first face of a membrane disc is coupled to a lateral seating surface of the inlet port disposed between the piston head cavity and the disc retainer. Also disclosed are methods of using and manufacturing regulator valve assemblies.

A regulator valve assembly may comprise: a housing defining an actuator cavity and a piston head cavity; a piston rod comprising a piston head disposed within the piston head cavity and a rod end disposed within the actuator cavity; and a disc retainer within the housing. The actuator cavity can have a top region of the actuator cavity and a bottom region of the actuator cavity. The piston head cavity can comprise a regulator inlet and an inlet port. The disc retainer can be coupled to a proximate seating surface of the inlet port, wherein a first face of a membrane disc is coupled to a lateral seating surface of the inlet port disposed between the piston head cavity and the disc retainer. Also disclosed are methods of using and manufacturing regulator valve assemblies.

The invention relates to a pressure relief device and to a method for producing a pressure relief device, the pressure relief device (10) comprising a rupture disc (11) and a vacuum support (12, 32), the rupture disc and the vacuum support being made of graphite, the one-piece rupture disc having an exit side (13) and an entry side (14), the rupture disc having a recess (15) on the entry side, said recess (15, 33) forming a rupture area (17) within a retainer (16) of the rupture disc, the vacuum support being inserted in the recess, the pressure relief device having a carbon retaining device (30) for a form-fitted fastening of the vacuum support in the recess.

A valve member for an inlet or outlet valve assembly of a reciprocating pump assembly includes a valve body and a seal member. The valve body comprises a first body surface and a second body surface that extend circumferentially about the valve body. The valve body defines a body axis and an annular cavity. The seal member is positioned at least partially within the annular cavity of the valve body such that an outer seal portion of the seal member extends between the first body surface and the second body surface of the valve body. The outer seal portion of the seal member comprises a first seal surface and a second seal surface. The first body surface, the first seal surface, and the second seal surface extend at different angles relative to the body axis.

A buoyancy assist tool has an outer case and a rupture disk connected in the outer case. A sleeve is disposed in the outer case and movable from first to second position in the outer case. A rupture disk membrane of a rupture disk prevents the sleeve from moving to the second position prior to the rupture disk membrane rupturing. The outer case is configured to be connected in a well casing. A lock ring holds the sleeve in the first position.

A pressure relief device is disclosed, such as may be used with a battery. According to one embodiment, the pressure relief device may include a pressure-retaining membrane—which may be a polymer or flexible graphite membrane—supported by a support strip. In response to a predetermined pressure on the pressure-retaining membrane, the support strip may be caused to deform, allowing the pressure-retaining membrane to open. The pressure-retaining membrane may include one or more lines of weakness to define an opening area and/or to determine the pressure conditions under which the membrane may open. One or more stress-applying devices or piercing mechanisms may be provided to cause the membrane to open.

A buoyancy assist tool has an outer case and a rupture disk connected in the outer case. A sleeve is disposed in the outer case and movable from first to second position in the outer case. A rupture disk membrane of a rupture disk prevents the sleeve from moving to the second position prior to the rupture disk membrane rupturing. The outer case is configured to be connected in a well casing. A lock ring holds the sleeve in the first position

A thermodynamic valve for retaining vapours and gases and relieving pressure and vacuum for use in the venting of tanks or reservoirs of combustible liquids (fluids), said valve comprising: upper diaphragm ring (3a) and lower diaphragm ring (3b) that act through the thermodynamic action of the positive and negative pressures inside positive pressure (4) and negative pressure (5) chambers fixed to one another, a cap (2) screwed on the body of positive pressure chamber (4) and having upwardly directed lateral openings and a rupture seal (1) fitted in the upper section of cap (2). A base (5.1) with an inner fire-break fabric (6) is positioned on the inner lower section of negative pressure chamber (5) and connected to the fuel tank venting pipe.