A dispenser assembly for controlled hydro-injection release of an erodible solid cartridge into a liquid. The dispenser assembly includes a fluid flow member with an inlet for attaching to a pressurized fluid line and an outlet. A hydro chamber with a hydro-injector member is provided in the fluid flow member. The hydro-injector member has an inlet opening which faces the inlet of the fluid flow member and outlet opening. A cartridge holding member is removably attached to the fluid flow member and is configured to house the erodible solid cartridge in an activation chamber. A plate is positioned in engagement with the hydro-injector member. An expandable member extends from the plate. The expandable member is maintained proximate to or in contact with a top of the erodible solid cartridge to control the rate of erosion as the erodible solid cartridge is eroded.

A dispenser assembly for controlled hydro-injection release of an erodible solid cartridge into a liquid. The dispenser assembly includes a fluid flow member with an inlet for attaching to a pressurized fluid line and an outlet. A hydro chamber with a hydro-injector member is provided in the fluid flow member. The hydro-injector member has an inlet opening which faces the inlet of the fluid flow member and outlet opening. A cartridge holding member is removably attached to the fluid flow member and is configured to house the erodible solid cartridge in an activation chamber. A plate is positioned in engagement with the hydro-injector member. An expandable member extends from the plate. The expandable member is maintained proximate to or in contact with a top of the erodible solid cartridge to control the rate of erosion as the erodible solid cartridge is eroded.

A dispenser assembly for controlled hydro-injection release of an erodible solid cartridge into a liquid. The dispenser assembly includes a fluid flow member with an inlet for attaching to a pressurized fluid line and an outlet. A hydro chamber with a hydro-injector member is provided in the fluid flow member. The hydro-injector member has an inlet opening which faces the inlet of the fluid flow member and outlet opening. A cartridge holding member is removably attached to the fluid flow member and is configured to house the erodible solid cartridge in an activation chamber. A plate is positioned in engagement with the hydro-injector member. An expandable member extends from the plate. The hydro-injector and the plate control the rate of erosion of the erodible solid cartridge.

Adjustable venturi assemblies and methods of using adjustable venturi assemblies are disclosed. In one aspect, a venturi assembly for injecting a secondary fluid into a primary fluid flow path is provided. The venturi assembly comprises a nozzle, a constricted section in fluid communication with the nozzle, a secondary fluid conduit in fluid communication with the nozzle, and a flow adjusting device. The nozzle and constricted section together define the primary fluid flow path along a first axis. The secondary fluid conduit is for transporting secondary fluid from the secondary fluid reservoir to the constricted section along a second axis. The flow adjusting device is positioned opposite the secondary fluid conduit and is configured to alter a velocity of fluid flowing along the primary fluid flow path by extending into a portion of the constricted section along the second axis.

A method for depressurizing a pipe includes forming, by an ejector assembly, a seal between a first pipe and a second pipe fluidically coupled to the tee pipe fitting. The first pipe flows a first fluid at a first pressure, and the second pipe flows a second fluid at a second pressure lower than the first pressure. The ejector assembly includes a nozzle converging along a flow direction of the first fluid flowing in the first pipe, and a mixing chamber at an outlet of the nozzle, the mixing chamber comprising an outlet is in fluid communication with the second pipe. The method also includes flowing the first fluid from the first pipe into the ejector assembly through the nozzle so that the pressure of the first fluid decreases to a third pressure lower than the second pressure to draw the second fluid into the mixing chamber.

A method for depressurizing a pipe includes forming, by an ejector assembly, a seal between a first pipe and a second pipe fluidically coupled to the tee pipe fitting. The first pipe flows a first fluid at a first pressure, and the second pipe flows a second fluid at a second pressure lower than the first pressure. The ejector assembly includes a nozzle converging along a flow direction of the first fluid flowing in the first pipe, and a mixing chamber at an outlet of the nozzle, the mixing chamber comprising an outlet is in fluid communication with the second pipe. The method also includes flowing the first fluid from the first pipe into the ejector assembly through the nozzle so that the pressure of the first fluid decreases to a third pressure lower than the second pressure to draw the second fluid into the mixing chamber.

A method for depressurizing a pipe includes forming, by an ejector assembly, a seal between a first pipe and a second pipe fluidically coupled to the tee pipe fitting. The first pipe flows a first fluid at a first pressure, and the second pipe flows a second fluid at a second pressure lower than the first pressure. The ejector assembly includes a nozzle converging along a flow direction of the first fluid flowing in the first pipe, and a mixing chamber at an outlet of the nozzle, the mixing chamber comprising an outlet is in fluid communication with the second pipe. The method also includes flowing the first fluid from the first pipe into the ejector assembly through the nozzle so that the pressure of the first fluid decreases to a third pressure lower than the second pressure to draw the second fluid into the mixing chamber.

A method for depressurizing a pipe includes forming, by an ejector assembly, a seal between a first pipe and a second pipe fluidically coupled to the tee pipe fitting. The first pipe flows a first fluid at a first pressure, and the second pipe flows a second fluid at a second pressure lower than the first pressure. The ejector assembly includes a nozzle converging along a flow direction of the first fluid flowing in the first pipe, and a mixing chamber at an outlet of the nozzle, the mixing chamber comprising an outlet is in fluid communication with the second pipe. The method also includes flowing the first fluid from the first pipe into the ejector assembly through the nozzle so that the pressure of the first fluid decreases to a third pressure lower than the second pressure to draw the second fluid into the mixing chamber.

A dispenser assembly for controlled hydro-injection release of an erodible solid cartridge into a liquid. The dispenser assembly includes a fluid flow member with an inlet for attaching to a pressurized fluid line and an outlet. A hydro chamber with a hydro-injector member is provided in the fluid flow member. The hydro-injector member has an inlet opening which faces the inlet of the fluid flow member and outlet opening. A cartridge holding member is removably attached to the fluid flow member and is configured to house the erodible solid cartridge in an activation chamber. A plate is positioned in engagement with the hydro-injector member. An expandable member extends from the plate. The hydro-injector and the plate control the rate of erosion of the erodible solid cartridge.

A pressurization and evacuation system is provided, including a top 3-way valve including a first port, a second port and a third port, a bottom 3-way valve including an first port, a second outlet port and a third port, and an educator including a pressure inlet, a suction inlet, and a discharge outlet. Wherein: a first conduit fluidically connects the top 3-way valve third port with the educator pressure inlet; a second conduit fluidically connects the top 3-way valve second port with the bottom 3-way valve first port; a third conduit fluidically connects the bottom 3-way valve third port with the educator suction inlet; and a fourth conduit fluidically connects the bottom 3-way valve second port with a customer apparatus.