Terminology 
Page 5

~ T ~

Tail Board
The full width step at the rear of the vehicle used to access the hose bed. The tail board was once used as a place for firefighters to stand while responding to a fire.

Tank to Pump
The plumbing on an apparatus that supplies water from the water tank to the pump.

Tanker
A fire truck  that is used primarily for carrying water to a fire scene. Tankers can be in size from 3000 gallons to 10,000 gallons.

Telesquirt
A 50' to 75' aerial device that can be mounted on a standard pumper, used as a water tower or rescue ladder. 

Top Mount
A pumper with the pump control panel mounted across the front of the pumper body, providing better visibility for the pump operator.

Transfer Case
A transmission like device used to transfer engine power from the driving wheels to the pump.

Transfer Valve
Selector for series or parallel operation on a multi-stage pump.

Trash Line
Same as jump line, although not necessarily carried on the front bumper.

Triple Combination
A truck that carries a pump, booster tank and hose.

Two Stage Pump
A water pump with two impellers, capable of pumping in series (pressure) or parallel (volume)

~ U ~


~ V ~

Victaulic Coupling
A clamp device used to make a flexible joint in the plumbing of a pumper. Victaulics are used to provide flexibility where a welded joint would not survive from movement and vibration.

~ W ~

Water Tender
Another term for tanker. The term Water Tender was adopted in the West when the municipal fire departments began interfacing with the wildland agencies who used aircraft, known as air tankers, to drop water and retardant on a fire. To prevent confusion, the name Water Tender was used to designate a ground based water vehicle.

Water Thief
A portable water distribution device with a 2 1/2" inlet and three gated 1 1/2" outlets.

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