Provided is a quick-release valve including: a quick-release member having a collar detachably coupled to a bottom opening of a base; and a sleeve having a flow passage for allowing a gas to enter or exit a substrate container. The collar has a pair of ear portions extending outward therefrom along a diameter direction and a handle extending outward therefrom along a radius direction. The ear portions are at a height substantially different from the handle.

A valve cartridge (1) having a body (10), a piston (12) and a piston support (22). The body has a seat (14). The piston (12) is supported on the piston support (22) and movable between first and second positions. The piston (12) is spaced from the valve seat (14) at the first position and the piston (12) seats on the valve seat (14) at the second position. The piston (12) and piston support (22) form a confined space. The volume of the confined space is at a maximum when the piston (12) is at the first position and is at a minimum when the piston (12) is at the second position. The piston (12) is under bias such that the piston (12) is biased away from the valve seat (14) to the first position and, in use, the piston (12) is able to seat on the valve seat (14) in the second position when subjected to sufficient pressure to counter the bias.

Apparatuses and methods related to a high pressure fluid processing device having a dual check valve setup that can be quickly and easily maintained with replacement parts are disclosed herein. In a general example embodiment, a high pressure processing device includes a body including a first surface having a first recess, a second surface having a second recess, and a third surface having a third recess, a first subassembly at least partially inserted into the first recess of the body, the first subassembly including a first check valve, a second subassembly at least partially inserted into the second recess of the body, the second subassembly including a second check valve, and a third subassembly at least partially inserted into the third recess of the body, the third subassembly coupling the body to a fluid driving mechanism, wherein the first subassembly, second subassembly and third subassembly are configured to be independently attachable to and detachable from the first recess, second recess and third recess, respectively.

The present invention provides a switching valve comprising: a housing including a first port, a second port, and a third port; a valve element configured to be movable in the housing so as to selectively allow one of the first port and the second port to communicate with the third port in accordance with a pressure difference between the first port and the second port; and a pressing member configured to press the valve element toward a side of the first port.

Embodiments of air admittance valve assembly and plumbing system incorporating the same are provided herein. In some embodiments, a valve assembly to allow or stop a flow for use with enclosed environment includes a housing having, an inlet disposed at a first end of the housing fluidly coupled to environment surrounding housing, an outlet disposed at a second end of housing fluidly coupled to enclosed environment, and an interior volume divided into a first zone, a second zone, and a third zone, a first valve having a first valve seat and a first sealing member urged by an existing force between a closed or open position; and a second valve having a second valve seat and a second sealing member urged by an existing force between a closed or open position.

A sanitary fitting, more particularly a thermostatic mixing valve, includes a housing, which has a valve seat for receiving a valve and into which at least one feed channel and a discharge channel open, wherein the at least one feed channel is led through a chamber, into which a backflow preventer is inserted and which is closed by a plug. A retaining frame is provided on the plug, which retaining frame protrudes into the chamber and by which retaining frame the backflow preventer is axially fixed.

The check valve (1) is of straight pipe joint type and oblique lift type. It includes: a valve seat (12a); a moving body (2) capable of linearly reciprocating between a closed state where it is in close contact with the valve seat and an open state where it is separated from the valve seat; a primary flow path (inflow path (12c)) on an upstream side of the moving body; and a secondary flow path (outflow path (12d)) on a downstream side of the moving body. The moving body includes a valve body (6) and a valve shaft (7) extending from the valve body. The valve seat supporting the valve body is formed to straddle the center line (CL) of the connection flow path that linearly extends including the primary flow path (inflow path) and the secondary flow path (outflow path 12d) in a cross section including the center line thereon.

A check valve includes a valve element and a valve body having a body housing, an annular valve seat insert, a bushing, and a biasing member. The body housing includes an outer circumferential wall extending between an inlet port and an outlet port to define a valve cavity therebetween. The valve seat insert is seated in a body seat surface surrounding the inlet port. The bushing is disposed in the valve cavity and defines a central bore, with the bushing including an outboard end surface axially engageable with the valve seat insert. The biasing member is disposed between a bearing portion of the body housing and an inboard end of the bushing to allow for axial movement of the bushing with respect to the body seat surface. The valve element extends through the bushing central bore and is movable between a closed position and an open position.

A substrate storage container comprises a container body capable of containing a plurality of substrates, and an air supply member capable of supplying gas from outside of the container body to an internal space, wherein for the substrate storage container the container body is formed in a front open box and the air supply member is attached to the bottom surface, and wherein a functional unit that changes the environment of the internal space to different states are connected with the air supply member so as to be able to be exchanged.

The present invention relates to a prevention device for loss of coolant accident (LOCA) and a nuclear reactor having the same. The prevention device for LOCA includes a nozzle portion integrally formed in a reactor vessel and having a communication hole communicating with the inside of the reactor vessel, a nozzle finishing portion assembled to the nozzle portion and an injection line for injecting a fluid to the inside of the reactor vessel respectively on both sides thereof in a communicating manner, and a check valve mounting portion installed to be embedded inside the nozzle portion and having at least one check valve opened by flow such that the fluid is injected into the reactor vessel, wherein the check valve blocks outflow of a reactor coolant from the reactor vessel in case of failure of the injection line.