instruction:
Translate the given Spanish text to English
question:
A valve is disposed relative to the outer member proximal of the first port.
answer:
Se coloca una válvula en relación al miembro externo proximal al primer orificio.


question:
A drive assembly is provided.
answer:
Un conjunto de accionamiento se suministra.


question:
The invention is useful for road equipment.
answer:

La invencion es util para material de carreteras.