Flow reversal control valve

A flow reversal control valve for use in a fuel cell, the valve comprising

• a housing having a first end and a second end disposed along a longitudinal axis;
• a wall defining a first passage in fluid communication with a second passage, the first passage disposed proximate the first end, the second passage disposed proximate the second end;
• a chamber in fluid communication with the first and second passages, the chamber having flow flutes formed along the longitudinal axis in the chamber;
• a seal disposed in the chamber and coupled to the at least one of the first and second passages, the seal having an elastomeric member disposed on a planar surface transverse to the longitudinal axis, the seal including a first seal and a second seal, the second seal being substitutable in place of the first seal to adjust fluid flow between the first and second ends, the first seal having an inner diameter and an outer diameter, the second seal having an inner diameter and an outer diameter;
• a closure member disposed in at least one of the first passage, second passage and the chamber,
• a resilient member acting on the closure member operable to prevent fluid communication between the first and second passages in a first position of the closure member abutting the elastomeric member when a pressure of the fluid of one of the first and second passages is generally equal to a fluid pressure of the other one of the first and second passages, the resilient member and the closure member operable, in a second position, to permit fluid flow between the first and second passages when the fluid pressure of one of the first and second passages are not equal to the fluid pressure of the other of the first and second passages, the flutes maintaining flow between the first and second passages when the closure member is in the second position.