Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Whatever happened to the Honeywell MZV series zone valves?

GeosmanGeosman Member Posts: 7
Odd that as of March 2020 Honeywell stopped production of the MZV series zone valves, replacement cartridges and power heads. Does anyone out there know the reason or if there may be an alternate source?

Comments

  • hot_rodhot_rod Member Posts: 13,526
    e-bay
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • EdTheHeaterManEdTheHeaterMan Member Posts: 636
    edited July 23
    I believe the MVZ valves were made by a company called SPARCO some 20+ years ago. Honeywell purchased that company and continued to produce many of their products under the Honeywell Brand. If you want to keep the valves operating, you may need to look on auction sites like eBay or Craigslist
  • hot_rodhot_rod Member Posts: 13,526
    Wirsbo, Uponor also used them for awhile.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • GeosmanGeosman Member Posts: 7
    As did Burnham and likely a number of others. It's just odd that the supply simply dried up with no trace of replacement parts. I think I found the last from Supply House as well as from Amazon. Some on e-bay are also sold out one was asking 4X normal trade price.
  • ZmanZman Member Posts: 5,872
    Aren't the valves compatible with other powerheads?
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • EdTheHeaterManEdTheHeaterMan Member Posts: 636
    edited August 4
    @Geosman, does anyone know if this actuator will work? There are several adaptors included
    https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Uponor-A3023522-Product-Overview.pdf
  • hot_rodhot_rod Member Posts: 13,526
    I know the thread would work, it would depend on the pin stroke if a thermo-electric head would work. This is a Sparco on a Caleffi thermo-electric zone valve body.

    If the valve is old and sticky you could blow up the actuator. That was common with the HW, Sparco and Wirsbo when crappy water caused the valve pin to seize up.

    Might be worth replacing the entire valve?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
Sign In or Register to comment.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!