Skip to main content

Shipping nationwide to the USA + Canada

Shipping nationwide to the USA + Canada

About this part

The McDonnell & Miller 51-2 is a mechanical water feeder combined with a low water cut-off for steam boilers. It maintains proper boiler water level by feeding makeup water when required and interrupts burner operation on low water. The unit includes a Series 2 switch and is rated for boilers up to 40,000 sq ft.

  • For steam boilers up to 40,000 sq ft (3,716 m2)
  • 3/4in NPT feeder, discharge and steam boiler connections
  • Maximum water supply pressure 100 psi (6.9 bar)
  • Maximum boiler pressure 100 psi (6.9 bar)
  • Series 2 switch with 10.2 A full load at 120 VAC
  • 35.8 lb (16.2 kg) shipping weight

Specifications

Brand
Mcdonnell Miller
Part number
51-2
SKU
15498
Category
Boiler & Heating
Shipping weight
35.7 lb

Not sure it's the right part? Send us the old part number or a photo and we'll check.