<p>A fluid control check valve incorporating an improved internal check ball retainer. The valve includes a cylindrical body portion having a radially inwardly extending chamber and a passageway extending through the valve and communicating with a radial inner end of the chamber. A ball is disposed within the chamber to block communication between the chamber and the passageway. The cylindrical body portion has a groove about its periphery which extends through a radial outer end of the chamber. A retainer is disposed in the groove to retain the ball within the chamber.</p>
