Mansfield/Prier Outdoor Faucet Stem Replacement Issue

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PLUM4457

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I have a Manfield Series 300 outdoor faucet and need to replace the stem assemply. For whatever reason mine measures 12 7/8" and none of their matching products I can find are that length. They have an 11 7/8 and an 13 7/8, but not a 12 7/8. Any ideas on how to find a replacement? Pictures attached.
 

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I had thought the same thing, but the end of the "G Style" stem looks different than mine. Mine has the castle nut shaped washer on the end and the G style does not.
 
I had thought the same thing, but the end of the "G Style" stem looks different than mine. Mine has the castle nut shaped washer on the end and the G style does not.
Contact Prier directly.
 
Just based on the picture. Talking with Prier now (very responsive) and they are coming to the same conclusion as you, it is an old C-134. Here are the pics I just sent them (they asked exact same questions!)
 

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We quit putting in Mansfield hydrants. We got to many call backs on new hydrants dripping. Now I install
Woodford brand. Like them much better. I wonder what a stem assembly cost. I think I would replace
the hydrant.
 
Thank you for all your help! So, your talking about cutting the copper in the wall and replacing the entire thing? The Prier people confirmed it is an oldy and likely not available.
 
What’s wrong with the one you have ? If it’s just dripping you can replace the rubber parts.

If you replace it then you’ll need to access the other end of the valve. That’s in the wall or the basement/crawlspace, etc.
 

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