Mastering Forward Lay Operations with a Four-Way Hydrant Valve
Mastering Forward Lay Operations with a Four-Way Hydrant Valve
“Water supply is everything. If you don’t have enough water, you don’t have a fire attack—you have a problem.”
The Key to Reliable Fireground Water Supply
Picture this: Your engine rolls up to a working structure fire. The initial knockdown goes well, but as more handlines deploy and fire flow demands increase, your intake pressure drops. Suddenly, you’re at risk of running out of water. What’s the solution?
Forward lay operations, paired with a four-way hydrant valve, can solve this problem, giving your department a seamless way to increase water flow without disrupting operations. In this article, we’ll break down the essentials of forward lay tactics and show you why every fireground should have a 4-way hydrant valve in play.
What is Forward Lay?
A forward lay is a water supply tactic where a supply line is deployed from the hydrant to the fire scene. This method allows the attack engine to begin operations immediately while establishing a continuous water supply.
In many fire departments across the U.S., this is the go-to method for securing a water supply, especially when limited staffing prevents assigning a dedicated pump operator to the hydrant.
Why It Matters
Key Steps to Perform a Forward Lay with a Four-Way Hydrant Valve
1. Stop at the Hydrant and Deploy the Valve
The first-arriving supply engine stops at the hydrant.
The firefighter dismounts, grabs the 4-way valve and hydrant bag.
The hose is wrapped around the hydrant, and the four-way valve is connected to the hydrant’s main discharge.
2. Lay the Supply Line to the Fire Scene
The engine proceeds to the fire scene, laying the supply hose behind it.
At the fire scene, the hose is connected to an intake on the attack pumper.
3. Initiate Fire Attack Using Tank Water
Firefighters begin fire attack with water from the engine’s onboard tank.
The driver/operator prepares to switch to hydrant supply when ready.
4. Charge the Hydrant and Deliver Water
Once the attack engine is ready, the hydrant firefighter opens the hydrant.
Water flows through the four-way valve to the fire scene.
For many fires, this setup alone provides sufficient water flow.
5. Boost Pressure (If Needed) Without Interrupting Flow
If fire flow demand increases, a second engine connects to the 4-way hydrant valve.
The valve redirects water into the boost pumper.
The boost pumper increases pressure and sends the enhanced water flow to the fire scene.
Thanks to the valve’s internal flapper mechanism, this transition happens without cutting off water to firefighters operating on scene.
ALWAYS use a four-way hydrant valve when performing a forward lay. Even if you don’t plan to boost pressure, having the option could save the fireground when demand spikes.
Why This Technique is Essential for Firefighting Operations
Equipment You’ll Need for a Successful Forward Lay
To execute a forward lay properly, you’ll need:
Download Your Forward Lay Checklist Now!
– Step-by-Step Guide
– Required Equipment
– Notes Section
– Instructor Bio
What is the Oasis?
The Oasis Hydrant Assist Valve is a versatile 4-way valve designed to enhance firefighting operations by maximizing water supply, pressure, and flow rate.
Common Mistakes to Avoid
Mistake 1: Skipping the 4-Way Valve
Always use it, even if you don’t plan to boost. It provides an emergency backup option.
Mistake 2: Failing to Bleed Air from the Line
Air in the supply line can damage pumps. Always use the bleeder valve.
Mistake 3: Incorrect Hose Connections on the 4-Way Valve
Remember the mnemonic: “Right goes into the pump, left goes out to boost.” Mixing this up causes delays.
Frequently Asked Questions (FAQs)
After-Action Review: Mastering Forward Lay Operations
Here’s what to remember:
