When it comes to fire protection, hydrants play a critical role in ensuring a reliable water supply during emergencies. However, not all hydrants are the same—there are above-ground hydrants and below-ground hydrants (also known as underground hydrants). In this article, we’ll explore the key differences between the two, their advantages, and where they are commonly used.
Key Differences
The most obvious difference between the two types of hydrants is where they are installed:
- Above-ground hydrants are installed above the surface, making them highly visible and easily accessible.
- Below-ground hydrants are installed beneath the surface, typically covered by a manhole cover or hydrant box, making them less visible.
Above-Ground Hydrants
✅ Easier to Access: Since above-ground hydrants are visible and exposed, firefighters can quickly connect hoses and access water without additional tools.
✅ Direct Connection: Lay-flat hoses can be attached directly to the hydrant, eliminating the need for extra fittings or standpipes.
✅ Common Usage: While they are often used in private installations (such as industrial sites, warehouses, and commercial developments), they are also found throughout South Africa in public water networks.
Below-Ground Hydrants
✅ Less Visible, Less Tampering: These hydrants are usually identified by a nearby FH (Fire Hydrant) marker post, though this is not always present. Since they are covered, they are less prone to vandalism or accidental damage.
✅ Requires Additional Equipment: To access a below-ground hydrant, you need:
- A standpipe, which screws into the hydrant outlet.
- A poke and key, used to open the hydrant valve and allow water flow. (See images below for reference.)
✅ Common Usage: Below-ground hydrants are widely used in municipal water networks across the country, particularly in areas where space, safety, or aesthetics are a concern.
Types of Below-Ground Hydrant Outlets
Underground hydrants come in three different outlet types:
Each type has specific compatibility requirements, which can be found on our website. If you need more details or assistance in selecting the right hydrant for your application, feel free to contact us.
Conclusion
Both above-ground and below-ground hydrants serve an essential function in fire protection. The choice between the two depends on factors such as accessibility, security, and regional preferences. At Woodlands Fire, we manufacture a full range of hydrants designed for durability, reliability, and compliance with industry standards.
For more information on our hydrants and related products, visit our website or get in touch with our team today.
