Scalable parallel mixing system and method

A mixing manifold comprising:

• a body;
• a first converging passageway in the body;
• a first diverging passageway in the body in-line and in fluid communication with the first converging passageway to form a first venturi;
• a first obstruction in a throat of the first venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the first ventral and an open position;
• a second converging passageway in the body;
• a second diverging passageway in the body in-line and in fluid communication with the second converging passageway to form a second venturi;
• and
• a second obstruction in the second venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the second venturi and an open position, and
• wherein the first and second obstructions have different weights.

A mixing manifold comprising:

• a body;
• a first converging passageway in the body;
• a first diverging passageway in the body in-line and in fluid communication with the first converging passageway to form a first venturi;
• a first obstruction in a throat of the first venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the first venturi and an open position;
• a second converging passageway in the body;
• a second diverging passageway in the body in-line and in fluid communication with the second converging passageway venturi;
• and
• a second obstruction in the second venturi configured to move between two positions a blocking position that blocks, at least in part, flow through the second venturi and an open position, and
• wherein the obstructions are configured to be biased by gravity to the closed position.

A mixing manifold comprising:

• a body;
• a first converging passageway in the body;
• a first diverging passageway in the body in-line and in fluid communication with the first converging passageway to form a first venturi;
• a first obstruction in a throat of the first venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the first venturi and an open position;
• a second converging passageway in the body;
• a second diverging passageway in the body in-line and in fluid communication with the second converging passageway to form a second venturi;
• a second obstruction in the second venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the second venturi and an open position;
• a third converging passageway in the body;
• a third diverging passageway in the body in-line and in fluid communication with the third converging passageway to form a third venture;
• a third obstruction in the third venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the third venturi and an open position;
• a fourth converging passageway in the body;
• a fourth diverging passageway in the body in-line and in fluid communication with the fourth converging passageway to form a fourth venturi;
• and
• a fourth obstruction in the fourth venturi configured to move between two positions, a blocking position that blocks, at least in part, flow through the fourth venturi and an open position;
• and
• wherein the first, second, third, and fourth obstructions have different weights.

A mixing manifold comprising:

• a body;
• a first converging passageway in the body;
• a first diverging passageway in the body in-line and in fluid communication with the first converging passageway to form a first venturi;
• a first means for obstructing located in a throat in the first venturi spaced from structure defining the fist converging and diverging passageways, the first obstruction configured to move between two positions, a blocking position that blocks, at least in part, flow through the first venturi and an open position;
• a second converging passageway in the body;
• a second diverging passageway in the body in-line and in fluid communication with the second converging passageway to form a second venturi;
• and
• a second means for obstructing in the second venturi spaced from structure defining the second converging and diverging passageways, the second obstruction configured to move between two positions, a blocking position that blocks, at least in part, flow through the second venturi and an open position.