6lb, 3 5/16" open end wrench. For fire hydrants?

[Bryan Burns]

Can anyone identify the maker and use of this large wrench? Bought it from an an estate sale and a worker thought it might be for fire hydrants. I googled fire hydrant wrenches and nothing like this showed up. (1/4" ignition wrench for scale)

 

[The Bean]

Based on the 1/4" wrench for scale, I would say that whatever it fits is bigger than any fire hydrant nut I ever saw.

 

[NUTTSGT]

Fire hydrant, doubt it. Highly doubt it.

Those are about 1" in size...

 

[ericm]

The hydrant at my house and the ones I have seen (mostly in CA) all have five sided nuts. The caps for the outlets have lugs on them., similar to the equipment I used as a wildland fire fighter. I have a wrench for mine that has a tang for the lugs and an opening for the nuts. The body of the wrench mates with two flats and the handle screws in to mate with a third, so it will work on nuts of different sizes. My hydrant's nuts are around 1".

 

[larry_g]

Cleanout plug wrench for plumbing fittings??

 

[Rc_Guy]

Cleanout plug wrench for plumbing fittings??

This is what I would guess it is

 

[Beerhippie]

I've been told that a pipe wrench works just fine on fire hydrants.

Just repeating what I've heard....

 

[Bannik254]

Dairy farm wrench probably.

 

[RTM]

Dairy farm wrench probably.

If that is a lightweight aluminum wrench, I agree with this statement. Tri clover made a bunch, used in Dairy plants, macro breweries, anywhere with 3+ inch pipes.

 

[NUTTSGT]

I've been told that a pipe wrench works just fine on fire hydrants.

Just repeating what I've heard....

Well, there's some truth to it.