Circuit loops to control fluids

A system for providing a fluid to one or more locations, comprising:

• a water inlet;
• a treatment agent inlet;
• a holding and mixing tank to receive water from the water inlet and treatment agent from the treatment agent inlet, the holding mixing tank in fluid communication with the inlet of the flow reversing loop, the fluid including a mix of the water and treatment agent;
• a pump in fluid communication with the treatment agent inlet.
• a flow reversing loop having an inlet to receive a fluid, an outlet in communication with a drain, a first port on a first side of the flow reversing loop, and a second port on a second side of the flow reversing loop, the first and second sides separated by the inlet and outlet;
• a conduit loop including a first end in fluid communication with the first port of the flow reversing loop and a second end in communication with the second port of the flow reversing loop, the conduit loop including one or more flow paths to the one or more location;
• wherein the flow reversing loop includes:
• a first flow path from the inlet to the first port so that the treatment fluid can flow through the conduit loop in a first direction from the first end of the conduit loop to the second end of the conduit loop and to the outlet of the flow reversing loop;
• a second flow path from the inlet to the second port so that the treatment fluid can flow through the conduit loop in a second direction, opposite of the first direction, from the second end of the conduit loop to the first end of the conduit loop and to the outlet of the flow reversing loop;
• and
• a first two-way valve, a second two-way valve, a third two-way valve, and a fourth two-way valve, the first and second two-way valves in fluid communication with fluid from the first pump, wherein, when the first and third two-way valves are open and the second and fourth two-way valves are closed fluid from the first two-way valve flows to the second end of the conduit loop, flows through the conduit loop to the first end of the conduit loop, and flows to a drain through the third two-way valve, and when the second and fourth two-way valves are open and the first and third two-way valves are closed fluid from the second two-way valve flows to the first end of the conduit loop, flows through conduit loop to the second end of the conduit loop, and flows to the drain through the fourth two-way valve;
• a fifth two-way valve situated between a check valve and the holding tank;
• and
• a sixth two-way valve situated between the fifth two-way valve and the holding tank and the sixth two-valve situated between the flow reversing loop and the holding tank, the sixth two-way valve including a variable flow nozzle to help ensure sufficient pressure of fluid in the flow reversing loop and the conduit loop.

A system for reversing flow of fluid in a conduit, the system comprising:

• a water inlet;
• a treatment agent inlet;
• a mixing tank to receive water from the water and treatment agent from the treatment agent inlet and provide a medium in which to mix the water and treatment agent to create a fluid;
• a first pump in fluid communication with the fluid;
• a flow reversing loop comprising a first two-way valve, a second two-way valve, a third two-way valve, and a fourth two-way valve, the first and second two-way valves in fluid communication with fluid from the first pump;
• a conduit loop including a first end in fluid communication with the second and third two-way valves and a second end opposite the first end in fluid communication with the first and fourth two-way valves;
• one or more conduit sub-loops in fluid communication with the conduit loop;
• wherein, when the first and third two-way valves are open and the second and fourth two-way valves are closed fluid from the first two-way valve flows to the second end of the conduit loop, flows through the conduit loop to the first end of the conduit loop, and flows to the drain through the third two-way valve, and when the second and fourth two-way valves are open and the first and third two-way valves are closed fluid from the second two-way valve flows to the first end of the conduit loop, flows through conduit loop to the second end of the conduit loop, and flows to the drain through the fourth two-way valve;
• and
• two or more pressure reducing valves (PRVs) or proportional pressure reducing valves (PPRV's) on two separate floors of a building, one of the PRVs or PPRVs near a first end of a nested conduit loop on a floor of the floors and another of the PRVs or PPRVs near a second end of the nested conduit loop, the first end opposite the second end.