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The McDonnell & Miller 172810 model is a head replacement for float type combo LWCO and pump controllers. This unit features manual reset and maximum differential settings suitable for steam applications.
This replacement mechanism provides reliability in steam heating applications, helping to prevent nuisance burner shutdowns.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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