My other outdoor frost-free faucet is a Mansfield 4000 series, but I have a difficult time trying to identify this other one.

frost-free faucet

  • Do you have reason to believe it's a different make/model? Does a close up inspection of the part reveal any mfgr/model info? Why do you need to know, simple curiosity? Repair parts?
    – FreeMan
    Commented Jun 17, 2020 at 13:42
  • Either there are no markings or they have eroded. The overall construction looks visibly different from the other one, which I just posted a question about (diy.stackexchange.com/q/195440/104944). This document (prier.com/wp-content/uploads/2020/01/mansfield-stem.pdf) is how I determined that one's make & model. It's for future repair needs and for now mostly curiosity. I'm actually trying to fix the Mansfield. I dissembled this one trying to get some ideas but realized the difference.
    – Roc W.
    Commented Jun 17, 2020 at 14:43

1 Answer 1


Thanks to a YouTube video, this is likely some model of B&K Mueller QuarterMaster hydrants.

B&K Muller

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