TASK DEFINITION: Translate the given Spanish text to English
PROBLEM: A valve body (26) is received within the seat (20) and comprises a curved surface (28) and a planar surface (30) that extends across the curved surface (28).

SOLUTION: Un cuerpo de valvula (26) es recibido dentro del asiento (20) y comprende una superficie curveada (28) y una superficie plana (30) que se extiende a traves de la superficie curveada (28).

PROBLEM: In turn, said DLC film can be coated with a decorative metallic film.

SOLUTION: Dicha capa de DLC puede estar recubierta, a su vez, por una capa metálica decorativa.

PROBLEM: The most representative figure of the invention is number 1.

SOLUTION:
La figura más representativa de la invencion es la numero 1.