The Liverpool defender has returned to his parent club this afternoon after his loan spell at Vale was brought to an end.
Sam joined the Valiants back in August last year and had gone on to make 16 appearances during his time.
Hart managed to score his first goal in professional football against his boyhood side Bolton Wanderers back in October, during the 3-1 defeat.
His last appearance for the club came in the FA Cup defeat, where he came off the bench to replace Remie Streete.
Everyone here at Port Vale would like to thank Sam for his time with the club and wish him all the best for the future.