An in-line shutoff valve includes a valve body with an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet and outlet chambers. A poppet is movably disposed within the valve body and has an open and closed position. The poppet seats against the poppet seat in the closed position, fluidly separating the inlet chamber from the outlet chamber. The poppet is unseated from the poppet seat in the open position, fluidly coupling the inlet and outlet chambers. A manifold with a servo port and a vent port is disposed within the valve body between the inlet and outlet chambers, the vent port being in fluid communication with the servo port to cool valve internal structures when the poppet is in the closed position.

An in-line shutoff valve includes a valve body with an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet and outlet chambers. A poppet is movably disposed within the valve body and has an open and closed position. The poppet seats against the poppet seat in the closed position, fluidly separating the inlet chamber from the outlet chamber. The poppet is unseated from the poppet seat in the open position, fluidly coupling the inlet and outlet chambers. A manifold with a servo port and a vent port is disposed within the valve body between the inlet and outlet chambers, the vent port being in fluid communication with the servo port to cool valve internal structures when the poppet is in the closed position.

In accordance with an example, a process control system includes a fluidic line having a longitudinal axis and including a fluidic connection. The fluidic connection has an axis angled relative to the longitudinal axis of the fluidic line. The process control system includes a primary block valve having an inlet port and an outlet port. The inlet port is coupled to the fluidic connection. The process control system includes a monoflange including a male portion forming an inlet port and including an external threaded surface. The monoflange includes an outlet and a flanged interface surrounding the outlet port of the monoflange. The monoflange includes a bleed port. The monoflange includes a bleed valve adapted to control fluid flow from the bleed port and a secondary block valve adapted to control fluid flow from the outlet port. The external threaded surface of the male portion threadably engages the outlet port of primary block valve.

In accordance with an example, a process control system includes a fluidic line having a longitudinal axis and including a fluidic connection. The fluidic connection has an axis angled relative to the longitudinal axis of the fluidic line. The process control system includes a primary block valve having an inlet port and an outlet port. The inlet port is coupled to the fluidic connection. The process control system includes a monoflange including a male portion forming an inlet port and including an external threaded surface. The monoflange includes an outlet and a flanged interface surrounding the outlet port of the monoflange. The monoflange includes a bleed port. The monoflange includes a bleed valve adapted to control fluid flow from the bleed port and a secondary block valve adapted to control fluid flow from the outlet port. The external threaded surface of the male portion threadably engages the outlet port of primary block valve.

A pressure relief valve may comprise a housing, a disk, and a seal. The disk may be configured to deflect relative to the housing. The seal may form a sealing interface with at least one of the housing or disk. The pressure relief valve may be coupled to an inflatable slide or an aspirator.

Embodiments of the present invention generally include a pressure relief system and methods of use, in which an apparatus includes an upper chamber fluidly connected to a pressurized fluid source, a lower chamber having an inlet and an outlet, a vertically moveable plate intermediate the chambers and disposed within a plate support, and connected to the plate by a vertical shaft, a vertically actuating lower chamber inlet valve including an inlet seal. Pressure relief is accomplished by controlling fluid pressure in the upper chamber such that varying downward force on the plate and therefore, via the shaft, the inlet seal, allows for selective opening/closing of the inlet valve as a function of upper chamber fluid pressure relative to the pressure exerted from a fluid source for which pressure relief is desired, beneath the inlet seal, whereby over-pressured fluid entering the lower chamber via the inlet is vented out the outlet.

A pressure relief valve is provided that includes a housing and a flap. The housing includes a plurality of receptacle members with openings therebetween, and the flap is configured to be accepted by the housing and to contact the receptacle members in a closed position. Further, the flap covers the openings and inhibits airflow through the openings in a closed position, and the flap is biasable to allow airflow through the openings in an open position.

A pressure relief valve is provided that includes a housing and a flap. The housing includes a plurality of receptacle members with openings therebetween, and the flap is configured to be accepted by the housing and to contact the receptacle members in a closed position. Further, the flap covers the openings and inhibits airflow through the openings in a closed position, and the flap is biasable to allow airflow through the openings in an open position.

An annular safety valve that is positionable in a wellbore may include a housing having an opening extending through the housing to allow to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve. The housing can define the opening by a seat face. A poppet may extend through the opening. A groove may at least partially surrounding the seat face for maintaining a shape of the seat face in response to an increase in pressure in the first area of the wellbore. The shape of the seat face may correspond to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position.

An annular safety valve that is positionable in a wellbore may include a housing having an opening extending through the housing to allow to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve. The housing can define the opening by a seat face. A poppet may extend through the opening. A groove may at least partially surrounding the seat face for maintaining a shape of the seat face in response to an increase in pressure in the first area of the wellbore. The shape of the seat face may correspond to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position.