Low pressure fluid flow control valve

A flow control valve providing a constant outflow in a variable inflow fluid pressure environment, the flow valve comprising:

• a) a body portion having a flow port therethrough defining an inlet at one end and an outlet at an opposite end;
• b) said inlet features a flow control surface and at least two side walls extending distal from said control surface toward said outlet;
• at least a portion of said inlet comprising pliable materials configured to render said inlet reactive to pressure changes;
• and wherein in response thereto said flow control surface regulates outflow through said flow control valve-;
• c) said flow control surface featuring at least one flow control opening for controlling the outflow through the valve;
• said at least one flow control opening having a polygon configuration defining two edges having a single common vertex-, each of said edges having a second vertex that is spaced apart by a distance defining a base of said polygon and wherein said base does not extend beyond an imaginary plane-formed external to said second vertex;
• and wherein said base extends internal to said opening;
• and wherein in response to an increase in pressure applied to said inlet at least one of said base or at least one said two edges are configured to collapse internally to said flow control opening toward one another.