Mercoid 123-3 Series 123 Boiler Water Level Control Switch

Mercoid, 123-3, Series 123 Boiler Water Level Control SPST Mercury Switch, Opens On Increase

Water level control, cast iron chamber, SPST mercury switch, opens on increase.

Heavy Duty, Cast Iron Chamber

Designed for boiler applications, the Model 123 is primarily used for low water cut-off or feed-water control. Other applications include condensate tanks and deaerators. A special snap action switch mechanism eliminates frequent operation due to surging water level. A transparent cover provides convenient visible operation of the switch. Features a flanged chamber for easy clean out and replacement of float or switch mechanism without removing the unit from piping.

Product Applications

• Boiler Low Water Cut-Off
• Boiler Feed-Water Control
• Condensate Tanks
• Deaerators

• UL-Motor Controllers-CA
• UL-Motor Controllers-US
• CSA Approval