Help identifying outdoor hydrant

My sister's house was built in 1972 (I think). It has this outdoor water hydrant on the back wall of her house, and I believe it's original to the house:





I'd like to know who made this hydrant so that I can replace the cartridge in it. I can't identify the cartridge and the nice man in the orange apron said "He wasn't sure.", but when pressed, conceded he didn't have a clue.

Can anyone in here identify this cartridge and tell me who made it? Thanks in advance.

that is just a standard sediment faucet. no "cartridge". you can easily rebuild this with new washers and o-rings.

thanks, Mike, but...

Thanks, Mike.

But, my other sister has the same kind of sediment faucet on her house just a few blocks away. So, I was wanting to get the "cartridge", or whatever you want to call it, from a faucet like this one so that between the two of them, they could have a spare. That way, if that faucet starts to leak on either one's house, I can replace it, and then rebuild the leaking one.

Would you have any idea who made this sediment faucet?