Valve assembly for use in a flow management system

A method of utilizing an alignment shoulder to assemble a valve including a bifurcated valve housing, the method including the steps of:

• providing an upper valve housing and a lower valve housing, the upper valve housing having an internal nose and a spill port below the internal nose;
• inserting a shuttle and a spring in the upper valve housing;
• in a first of the housings, providing a pin end having an external tapered thread and locating a triple alignment shoulder adjacent to the last thread;
• and,
• initially engaging the first of the housings and a second of the housings via a second housing box end having threads mated with the first housing pin end;
• wherein rotating the pin end into the box end reduces a gap between the alignment shoulder and a face of the box end.

A valve for use in a downhole oil production string comprising:

• an upper housing and a lower housing for containing a spring biased shuttle;
• and,
• one of the housings having a threaded pin end for mating with a threaded box end of the other housing;
• wherein when the upper housing is mated with the lower housing substantially simultaneous occurrences include (i) the spring is compressed to exert a force on the
• shuttle, the force consistent with flow in one direction through the valve during valve operation, (ii) engagement of the threaded ends provides an interference fit and a seal therebetween, and (iii) the shuttle is free to travel a distance toward the lower housing and unblock a spill port, the travel consistent with flow in an opposite direction through the valve during valve operation.