Reliable Connections: Features dual 1/4" barb ports for a leak-proof seal with standard vacuum hoses

Precision Engineering: 1060 RPM speed is factory-tuned to minimize harmonic noise and cabinet vibration

provided it matches the manufacturer's specification for that elevation

and 97D series components

to prevent nuisance tripping and ensure accurate negative pressure sensing

McDonnell & Miller 53-2-HD Control R-22 Reliable Connections: Features dual 1/4"McDonnell & Miller?53 2 HD Mechanical Water Feeder and Low Water Cut Off for Low Pressure Steam and Hot Water Boilers with 75 PSI Max Vessel Pressure and Snap Acting SPDT Switch Head Mechanism Only (Part Number 137300) This item is not qualify for free shipping.