McDonnell & Miller 339900 Valve Assembly and Gaskets R-410A While its primary function is

While its primary function is thermal and current overload protection

Does this model feature a soft seat

Its high-flow design minimizes pressure drop while providing a reliable shut-off for localized service

and 8201-5579

McDonnell & Miller 339900 Valve Assembly and Gaskets R-410A While its primary function isWhen you are maintaining a Series 25 A make up water feeder, the McDonnell & Miller 339900 (Model SA25A 6) is the exact float valve assembly required to restore proportional feed action. This technical kit includes both the precision engineered valve assembly and gaskets, ensuring a positive seal on the soft seat for reliable water level management in boiler receiver tanks. As a veteran grade replacement part, it is built to withstand a maximum water