Woodford S3 Complete HeadWoodford 10449, 15219 Complete S3 Hydrant Head. The head comes complete. When replacing a head, it is always a good idea to also replace the plunger since the head is already off. The Woodford S3 hydrant head is a component used in outdoor water supply systems, particularly for frost free hydrants. Heres a description of a complete Woodford S3 hydrant head: Material: The hydrant head is typically made of durable cast iron or other corrosion resistant