McDonnell & Miller 61-HD Low Water Cut Off R-410A the 998-0510-98 kit typically includes

the 998-0510-98 kit typically includes the necessary seal (part no

Why is air venting critical in an F&T trap like the 15B2

Industrial-Grade Construction: Built to withstand high-temperature environments and thousands of cycles without diaphragm fatigue

and Armstrong R41093-001

making it suitable for outdoor and wash-down environments

McDonnell & Miller 61-HD Low Water Cut Off R-410A the 998-0510-98 kit typically includesThe McDonnell & Miller 61 HD (Part Number 140300) is a heavy duty mechanical low water cut off designed specifically for low pressure steam boiler applications. This head mechanism serves as a direct replacement component for Series 61 controllers, facilitating reliable burner circuit interruption when water levels drop below the safe line. Rated for a maximum steam pressure of 20 PSI, the 61 HD utilizes a high buoyancy float operated mechanism to