How to Identify a 6-in Frost-Free Outdoor Faucet

How to Identify a 6-in Frost-Free Outdoor Faucet
How to Identify a 6-in Frost-Free Outdoor Faucet
How to Identify a 6-in Frost-Free Outdoor Faucet(plumbing101.i234.me) — You have a frost-free faucet (a sillcock or wall hydrant) about 6 in long, and you’re trying to find the brand and model. That helps you get the right replacement parts or stem kit. Here’s how to go about it.

frost free outdoor faucet identification guide

Q: What features help identify the faucet?

A: Key traits to note:

  • Does it have a vacuum breaker or anti-siphon on top behind the handle?
  • What is the length (thru-wall dimension) — 6 in, 8 in, etc.
  • The shape and markings on the stem (threads, square or round, number of threads).
  • The handle style (wheel, star, or lever). Some brands use unique handle designs.
  • Any logo or cast letters in the body (often “BK”, “M”, or brand name) as per the BK Products identification guide. :contentReference[oaicite:1]{index=1}

Q: Are there common brands with 6 in frost-free models?

A: Yes, many brands make 6-inch frost-proof faucets. Examples include:

  • Arrowhead Brass — their 6 in. lead-free anti-siphon models.
  • Plumber’s Choice — 6 in anti-siphon sillcocks. :contentReference[oaicite:3]{index=3}
  • ReliaBilt — they sell a 6-inch brass frost-resistant sillcock. :contentReference[oaicite:4]{index=4}
  • BK Products — many frost-proof faucets carry a “BK” or “M” triangle marking as part of their identification system. :contentReference[oaicite:5]{index=5}

Q: What measurement matters most?

A: The “stem length” or “inside stem measurement” matters a lot. BK’s identification guide shows different part numbers based on that measurement. Having that length tells suppliers which replacement stem fits your unit.

Q: How to find the replacement stem or kit?

A: Once you have brand clues and the stem length, you can:

  • Contact the brand with photos and ask for a stem or repair kit matching your spec.
  • Search for “6 in frost-free faucet stem kit ” or “6 in sillcock repair kit.”
  • Visit plumbing supply houses with the faucet part or measurements to match by eye.

Q: What to do now to proceed?

A: Steps to take now:

  1. Remove the handle and bonnet nut to expose the stem.
  2. Measure the stem length (tip to tip), count threads, and note thread type.
  3. Note any cast or stamped brand markings on the body (BK, M, arrow, etc.).
  4. Take clear photos and send them to specialty plumbing parts vendors or the faucet manufacturer.

For more about frost-free faucet identification, see this resource: BK Products Sillcock Identification Guide.

I’m Chris Mayer, writing for Plumbing 101.

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