Standing valve with a curved fin

A standing valve for use with a variety of sizes of fluid pumps, including 1¼″, 1½″, 1¾″, and 2″ fluid pumps, comprising:

• an elongate valve body having a longitudinal axis, an upper and a lower end, an outer wall surface, and an internal bore having an interior surface extending between the upper and lower ends;
• a check valve, including a ball and seat, disposed adjacent the lower end of the valve body with the ball disposed for movement within a portion of the bore of the valve body;
• a means for connecting the upper end of the valve body to a portion of the fluid pump, the connecting means being disposed at the upper end of the valve body;
• at least one fin having a length measured along a portion of the longitudinal axis of the valve body and being disposed within a portion of the bore, the at least one fin having a width, an upper and a lower end, with the lower end of the at least one fin radially disposed, about the longitudinal axis of the valve body, a predetermined angle from the upper end of the at least one fin, and the upper and lower ends of the at least one fin are both disposed intermediate the lower and upper ends of the valve body;
• a connection formed between the at least one fin and the interior surface of the internal bore of the elongate valve body, the connection having a radius of curvature within a range of approximately 0.09 inch to 0.15 inch;
• a projection extending into the bore of the valve body a sufficient distance to prevent the passage of the ball through the upper end of the valve body;
• the bore having a diameter, with the diameter of the bore increasing from the lower end of the at least one fin to the upper end of the at least one fin, and the width of the fin increasing along its length from the lower end to the upper end of the at least one fin;
• and
• the predetermined angle is within a range of from 55° to 75° for use with 1¼″ and 1½″ fluid pumps;
• or the predetermined angle is within a range of from 25° to 45° for use with 1¾″ and 2″ fluid pumps.