A system and method for injecting slurry includes a first elongated tank comprising a first end having a first volume and a second end having a second volume, said first volume separated from the second volume, a first pipe having a first end external to the first elongated tank receiving clear fluid and a second end coupled to the first volume and a plurality of slurry valves fluidically coupled to the first elongated tank. The plurality of slurry valves have a first state communicating high pressure slurry from the second volume to the slurry injection site and a second state communicating low pressure slurry into the second volume. A plurality of clear fluid valves are fluidically coupled to the first elongated tank and communicate high pressure clear fluid to the first volume in the first state and communicate low pressure clear fluid from the first volume in the second state.

A slurry injection system having a plurality of clear fluid pumps receiving clear fluid from a low pressure clear fluid manifold and pressurizing the clear fluid into high pressure clear fluid and communicating the high pressure clear fluid into the high pressure clear fluid manifold. A blender unit having low pressure slurry therein. A mixer receives clear fluid through a first valve. A slurry pressurizer in fluid communication with the high pressure clear fluid manifold through a second valve. The slurry pressurizer forms high pressure slurry by pressurizing the low pressure slurry from the blender unit using high pressure manifold clear fluid that is communicated to the mixer and communicates low pressure fluid to the low pressure clear fluid manifold. The mixer mixes the high pressure slurry and clear fluid from the first valve to form a mixture that is communicated to a slurry injection site.

A nitrous oxide gas mixer includes at least one mixing chamber having at least one nitrous oxide gas connection and at least one oxygen gas connection for introduction of oxygen gas and nitrous oxide gas and at least one flow rate controller, by which a volume flow of the two gases can be respectively adjusted separately and/or together.

At least one O.sub.2 emergency button is mounted to the mixing chamber for emergency flooding the mixing chamber with oxygen gas and/or with ambient air.

A mixing apparatus for producing aqueous calcined gypsum slurry includes a housing, a rotor assembly, and an actuator system. The housing defines a mixing chamber therewithin. A top lid of the housing includes a lid ring extending along a normal axis toward a bottom thereof. The rotor assembly includes a rotor disposed within the mixing chamber and a drive shaft extending along and rotatable about the normal axis. The rotor is rotatively coupled with the drive shaft and extends radially therefrom. The upper surface of the rotor and the lid ring are separated by a lid ring gap along the normal axis. The actuator system is arranged with the rotor assembly to selectively move the rotor over a range of travel along the normal axis between a lowered position and a raised position to selectively change the lid ring gap.

Systems and methods for blending fluids are provided. A blended fluid may be obtained by mixing a first fluid from a first fluid source with a second fluid from a second fluid source. The blended fluid may be pumped by a pump arranged downstream of a point at which the first and second fluids are mixed, wherein no other pumps are upstream of the pump. First and second flow control valves that control the flow rate of the first and second fluids, respectively, are adjusted so as to reach a target flow rate of the blended fluid, the blended fluid having a target blend of the first fluid and the second fluid.

A chemical delivery system with dilution control includes a chemical delivery manifold with eductors each fluidly coupled to a valve configured to operate independently to selectively control flow of a motive fluid through a respective eductor. Metering devices are coupled to concentrated chemical lines and configured to control a rate of dispensing of the concentrated chemical passing therethrough to each of the eductors. Concentrated chemical flow rate sensors are coupled to each of these individual concentrated chemical lines and configured to measure a flow rate of the concentrated chemicals therethrough. A control unit receives a measured flow rate from each flow rate sensor and causes a respective metering device to adjust the rate of dispensing for one or more concentrated chemicals to control the flow rates of the concentrated chemicals and thereby individually control a dilution of each concentrated chemical in the motive fluid.

A system for mixing acid and water can include a tank for holding acid, an acid pump for pumping acid out of the tank, an acid flow meter, an acid control valve, a water pump for pumping water, a water flow meter, a water control valve, a flush valve to selectively flush the system with water, and a controller to monitor the flow meters and control the pumps and the valves. The acid control valve and/or the water control valve can be an electronically controlled valve. The flush valve can be an electronically controlled valve to selectively permit water to flow from downstream of the water pump to upstream of the acid pump. The acid control valve, the water control valve, the flush valve, or any combination thereof can be throttled by the controller to control flow therethrough.

A system and method are provided for airless aqueous iodine production. The system includes a water feed line to iodine columns, an iodine concentrate supply line from the iodine columns with a sensor for measuring iodine concentration, a finished aqueous iodine supply line with an inline mixer for mixing the iodine concentrate with water from a water bypass line to produce a finished aqueous iodine. A programmable logic controller is connected to water feed line valve, iodine concentrate supply line valve and the sensor for controlling iodine concentration. The method includes flowing water through iodine columns to produce an iodine concentrate, filtering the iodine concentrate, measuring iodine concentration using a sensor, adjusting iodine concentration with water from a water bypass line, passing the aqueous iodine through a manifold that includes a vacuum system to an airless iodine product reservoir to produce airless aqueous iodine.

Embodiments provide a liquid handling system arranged for preparation of small volume liquid formulations and dispensing these into output vessels. The system can be utilised for a variety of low volume liquid formulation preparation applications, with cell therapies being one example application.

A nitrous oxide gas mixer includes at least one mixing chamber having at least one nitrous oxide gas connection and at least one oxygen gas connection for introduction of oxygen gas and nitrous oxide gas and at least one flow rate controller, by which a volume flow of the two gases can be respectively adjusted separately and/or together. At least one O.sub.2 emergency button is mounted to the mixing chamber for emergency flooding the mixing chamber with oxygen gas and/or with ambient air.