McDonnell & Miller 157S-RL Controller Refrigerant this OEM flame sensor should

this OEM flame sensor should be inspected during annual maintenance for carbon buildup or cracked porcelain insulators

While the electrical specs (6-8

Use a material capable of withstanding 210

this specific part is designed with a 1/2-inch bore

McDonnell & Miller 157S-RL Controller Refrigerant this OEM flame sensor shouldThe McDonnell & Miller 157S RL (Part Number 176902) is a heavy duty combination low water cut off and pump controller designed explicitly for steam boilers with an integral water column. This model features alternate tappings including 1 2" NPT connections for gauge glass and tri cocks, providing versatile installation options for commercial and industrial applications. Built with a Monel bellows for superior corrosion resistance and a snap acting