Dwyer Instruments 123-7000-153 Boiler Water Level Controller

The Series 123 & 125 Boiler Water Level Control is designed for boiler applications, the Model 123 is primarily used for low water cut-off or feed-water control. The 125 offers the same long lasting service with a direct action mercury switch movement that provides a close deadband where needed.

• Special snap action switch mechanism options eliminates frequent operation due to surging water level
• Transparent cover provides convenient visible operation of the switch
• Flanged chamber for easy clean out and replacement of float or switch mechanism without removing the unit from piping

• Additional Features 1: Manual Reset
• Cable Material: N/A
• Deadband: 1.5 in
• Electrical Connection: 1/2 in NPT female Conduit with Screw Terminal block
• Enclosure Ratings: General purpose
• Material Construction Option: N/A
• Materials, Wetted: 304 Stainless Steel, Brass, Carbon Steel, Iron
• Measurement Pressure Type: Gauge
• Media Compatibility: Alcohols, Compatible Liquids, Oils, Water
• Mounting Orientation: Vertical
• Operating Temperature, Max: 212° F
• Process Connection Size: 1/8 in
• Process Connection Type: NPT Female
• Process Temperature, Max: 365 °F
• Proof Pressure: Up to 150 psi
• Specific Gravity, Min: 0.88
• Switch Note: 12 A @ 120 Vac, 5 A @ 240 Vac, 0.5 A @ 125 Vdc resistive, 0.25 A @ 250 Vdc resistive
• Switch Rating: 30 VA: 0.14 A @ 220 Vac
• Switch Type: SPDT Snap
• Weight: 20 lb

Application

• Boiler low water cut-off
• Boiler feed-water control
• Condensate tanks
• Deaerators