Hydrant Gate Valve

What Is Hydrant Gate Valve?

A hydrant gate valve is a threaded auxiliary valve attached to a fire hydrant outlet, allowing firefighters to connect additional hose lines or connect a second pumper to an active hydrant without shutting down water flow to the initial supply line.

Why Hydrant Gate Valve Matters on the Fireground

If a first-due engine connects directly to one hydrant port and later requires more water, shutting down the hydrant to connect a second line cuts off water to working interior attack lines. A gate valve attached upfront allows seamless expansion.

Relevant NFPA Standards

• NFPA 1930: Standard on Fire and Emergency Service Use of Thermal Imagers, Two-Way Portable RF Voice Communication Devices, Ground Ladders, Rescue Tools, Fire Hose, and Fire Hose Appliances

Field Procedures & Tactical Steps

1. Attach the hydrant gate valve to the secondary unused port of the hydrant before opening the main operating nut.
2. Ensure the gate valve handwheel is fully closed before turning on the main hydrant valve.
3. Charge the primary supply line connected to the main port.
4. When a second engine or supply line arrives, connect to the gate valve outlet without shutting off the hydrant.
5. Spin the gate valve handwheel counter-clockwise slowly to supply the secondary line under pressure.

Common Context & Application

Attached to the unused 2½-inch or 4½-inch port of a fire hydrant during initial water supply setup on engine company responses.

Frequently Asked Questions about Hydrant Gate Valve