- Hydrant wrench
A hydrant wrench is a tool used to remove
fire hydrant caps and open the valve of the hydrant. They are usually adjustable so as to fit different sized hydrant nuts.In France
In
France , the hose and hydrants are linked withGuillemin symmetrical clutch "(raccord symétrique Guillemin)", which requires the rotation of 1/4 turn of a ring to be fastened. The ring is notched.The wrench is called "Guillemin wrench" ("clef Guillemin", IPA|/kle gijəm~ε/), but the firefighters call it "tricoise wrench" ("clef tricoise", IPA|/kle trikwaz/). The curved part applies on the ring, and the hooked part clutches a notch.
Big tricoise wrenches are placed in fire trucks, and are mainly used to fasten the big hoses, e.g. ∅110 mm hoses to feed the pumper tank from the hydrant (∅100 mm for the clutch). Small tricoise are made of
brass and hang at the fire belts; they are used to fasten the small hoses, e.g. ∅70mm to ∅22mm hoses (∅65mm to ∅20mm clutches).The shape is sometimes adapted so it can be used as a tool for other purposes; it is then called "polycoise wrench" ou "Deschamps wrench". These tools are used to
* 12mm female triangle wrench: opening thegas andelectricity standard boxes of EDF-GDF
* 15.6mm female triangle: opening the boxes of the fire hydrants;
* 5×5mm to 8×8mm square female wrenches: opening the doors without knob, the ventilation acceses and the closets containing firefighting equipment in some public locations;
* 12.5×12.5mm square female wrench: open thedry riser s;
*screwdriver : opening the bathroom and toilet doors;
* unfastening nuts with the 13, 17 and 19mm six-point wrenches.In the United States
The shape of a hydrant wrench is sometimes adapted so it can be used as a tool for other purposes such as:
* Storz and spanner hose couplings
* Rocker lug couplings
*Water meter shutoff valves
* Gas cock valves
* Pentagonal nuts
* Square nuts.
Wikimedia Foundation. 2010.
