Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.

Abstract: A method of demand management and control of fluid pipe networks including providing a computer controlled fluid network for delivery of fluid through a plurality of valves, maintaining a real time database of predetermined parameters including flow schedules and valve capabilities, requesting a flow rate and time of delivery of said fluid to at least one of said plurality of valves, determining availability of providing delivery and flow rate of fluid to the at least one of said plurality of valves based on hydraulic capacity of the fluid network, and calculating parameters using the database to deliver fluid to the at least one of said plurality of valves, whereby each of the plurality of valves is monitored and adjustably controlled to provide the flow rate and delivery through the at least one of said plurality of valves and manage the pressure head within said fluid pipe network between predetermined limits.

Abstract: The invention provides a cable drive device (10) including a linear drive member (12), and a cable drum (14) attached to a support bracket (30, 32) adapted to be affixed to a surface. The cable drum (14) has an axle (26) supported by the support bracket (30, 32) to allow rotation of the cable drum (14). The cable drum (14) has a cable (42) affixed at either end of said linear drive member (12) and tautly wrapped around the cable drum (14). The cable drum (14) is located between the ends of the linear drive member (12) to, in use, allow the linear drive member (12) to be guided through the bracket (30, 32) to move the linear drive member (12) longitudinally when the axle (26) is rotated.

Abstract: The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

Abstract: A valve for controlling fluid flow from an inlet of a pipe fitting to at least one outlet of the pipe fitting at an angle to the inlet. The pipe fitting includes an inner collapsible bellows fixed at a position opposite the inlet. The bellows has a support annulus at the other end adjacent the inlet, whereby, in a closed position, the bellows prevents fluid flow from the inlet to the at least one outlet as the fluid is trapped within the bellows. In an open position, the fluid can flow from the inlet to the at least one outlet when the bellows is collapsed.

Abstract: A valve for controlling fluid flow from an inlet of a pipe fitting to at least one outlet of the pipe fitting at an angle to the inlet. The pipe fitting includes an inner collapsible bellows fixed at a position opposite the inlet. The bellows has a support annulus at the other end adjacent the inlet, whereby, in a closed position, the bellows prevents fluid flow from the inlet to the at least one outlet as the fluid is trapped within the bellows. In an open position, the fluid can flow from the inlet to the at least one outlet when the bellows is collapsed.

Abstract: A method of measuring the flow rate of fluid through a gate member attached to a pipeline. The pipeline including includes a flow meter upstream and adjacent the gate member. The flow meter provides a flow output to measure the fluid flow through the flow meter. The method includes steps of monitoring the flow output from the flow meter; monitoring the gate opening position of the gate member; determining a relationship or algorithm for the flow rate using calculations derived from system identification techniques based on data received from the monitoring of the flow output from the flow meter and data received from the monitoring of the gate opening position; and once the relationship or algorithm has been determined, using the relationship or algorithm to subsequently measure said flow rate.

Abstract: The invention provides a method of demand management for fluid networks. The method includes the steps of providing a computer controlled fluid network for delivery of fluid to at least one customer (14), maintaining a real time database (16) within the computer controlled fluid network of predetermined parameters, requesting a flow rate and time of delivery of said fluid from the fluid network through a user interface (22) to a customer (20), determining, using predetermined parameters from the real time database (16), the availability (24) of providing delivery of fluid from the fluid network to the customer (14) based on hydraulic capacity of the fluid network, and, if the hydraulic capacity is available, calculating parameters (38) using the real time database (16) to deliver fluid to the customer (14) through the computer controlled fluid network.

Abstract: The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

Abstract: A valve for controlling fluid flow from an inlet of a pipe fitting to at least one outlet of the pipe fitting at an angle to the inlet. The pipe fitting includes an inner collapsible bellows fixed at a position opposite the inlet. The bellows has a support annulus at the other end adjacent the inlet, whereby, in a closed position, the bellows prevents fluid flow from the inlet to the at least one outlet as the fluid is trapped within the bellows. In an open position, the fluid can flow from the inlet to the at least one outlet when the bellows is collapsed.

Abstract: The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

Abstract: The invention provides a method of demand management for fluid networks. The method includes the steps of providing a computer controlled fluid network for delivery of fluid to at least one customer (14), maintaining a real time database (16) within the computer controlled fluid network of predetermined parameters, requesting a flow rate and time of delivery of said fluid from the fluid network through a user interface (22) to a customer (20), determining, using predetermined parameters from the real time database (16), the availability (24) of providing delivery of fluid from the fluid network to the customer (14) based on hydraulic capacity of the fluid network, and, if the hydraulic capacity is available, calculating parameters (38) using the real time database (16) to deliver fluid to the customer (14) through the computer controlled fluid network.

Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.

Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.

Abstract: A method of demand management and control of fluid pipe networks including providing a computer controlled fluid network for delivery of fluid through a plurality of valves, maintaining a real time database of predetermined parameters including flow schedules and valve capabilities, requesting a flow rate and time of delivery of said to at least one of said plurality of valves, determining availability of providing delivery and flow rate of fluid to the at least one of said plurality of valves based on hydraulic capacity of the fluid network, and calculating parameters using the database to deliver fluid to the at least one of said plurality of valves, whereby each of the plurality of valves is monitored and adjustably controlled to provide the flow rate and delivery through the at least one of said plurality of valves and manage the pressure head within said fluid pipe network between predetermined limits.

Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.

Abstract: A valve for controlling fluid flow from an inlet of a pipe fitting to at least one outlet of the pipe fitting at an angle to the inlet. The pipe fitting includes an inner collapsible bellows fixed at a position opposite the inlet. The bellows has a support annulus at the other end adjacent the inlet, whereby, in a closed position, the bellows prevents fluid flow from the inlet to the at least one outlet as the fluid is trapped within the bellows. In an open position, the fluid can flow from the inlet to the at least one outlet when the bellows is collapsed.

Abstract: The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

Abstract: The invention provides method and system of controlling flow rate in a pipeline network for fluids. The system includes a demand management system to monitor fluid flow rate in the pipeline network (10) and a pump (34) to increase the fluid flow rate when the demand management system determines an increase in fluid flow rate is required.

Abstract: The invention discloses an overshot control gate for use with trapezoidal irrigation channels. A gate has a rigid rectangular section adapted to, in use, be pivotally mounted to a base of a trapezoidal irrigation channel. A pair of triangular sections are pivotally mounted on opposite sides of the rigid rectangular section. Each of the triangular sections are divided into first and second triangular sections with a common apex at the base of the trapezoidal irrigation channel. Each of the first triangular sections are rigid and adapted to, in use, be pivotally mounted to opposite side walls of the trapezoidal irrigation channel. Each of the second triangular sections including the pivotal mounting on opposite sides of the rigid rectangular section are formed of a flexible material. Also disclosed is a pipe flow meter and a duckbill valve.