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Replacing Taco 219 with SharkBite Max 3/4" Spring Check-OK?

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Sam240
Sam240 Member Posts: 1
in Radiant Heating

Hey all,
I have a gas boiler hydronic baseboard system with a noisy Taco 219 flow-check (chattering). I’m planning to replace it and was considering using a SharkBite Max 3/4″ brass push-to-connect spring check valve (UR2016A) instead of another weighted Taco 219.

The goal is to prevent ghost flow/backflow, and the circulators handle the flow. Boiler temps are typical residential (<180°F).

Is a spring-check like this an acceptable substitute in this situation, or is there a reason to stick with a traditional Taco flow-check?
https://www.homedepot.com/p/SharkBite-Max-3-4-in-Brass-Push-to-Connect-Check-Valve-UR2016A/323675912

Appreciate any insight.

2026-01-08_11-14-13.png

Comments

  • HomerJSmith
    HomerJSmith Member Posts: 2,743
    edited January 8

    If you use Sharkbite, be sure and use the reamer on the inside and outside of the pipe. Clean the pipe well.

    Oh, and it is directional. So, install it right.

  • hot_rod
    hot_rod Member Posts: 27,056

    That seems like a high cracking pressure, being low lead it may be more for domestic water applications?

    Screenshot 2026-01-08 at 9.48.53 AM.png Screenshot 2026-01-08 at 9.49.06 AM.png

    Typical hydronic spring checks crack at .25- .50 psi. I believe the same for the internal circulator checks ICFs.

    A serviceable check is a handy feature, debris can cause them to leak through. Here is an option.

    Screenshot 2026-01-08 at 9.50.05 AM.png Screenshot 2026-01-08 at 9.49.50 AM.png
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    HomerJSmith
  • Intplm.
    Intplm. Member Posts: 2,906

    I would not use a regular directional check valve on a heating system. Ghost flow is a true phenomenon that occurs on hot water heating systems. By design a Flo-check or Flo-control valve will prevent ghost flow where a regular type check will not.

    It's best that you use the proper control.

  • hot_rod
    hot_rod Member Posts: 27,056

    Best to shop for a hydronic specific check.

    The pop or opening psi of the hydronic check is important especially with variable speed circulators. At low modulation/ gpm flows the check needs to be pushed open and held wide open to prevent chattering, turbulence, and possible cavitation, that is part of the reason for the low .25- .50 psi "pop".

    Swing checks don't have a place in hydronics as they depend on a backflow condition (pressure differential) to close. Although they work well for over-heat protection as they will leak across

    Screenshot 2025-07-05 at 7.48.31 AM.png
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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