Description
McDonnell & Miller 194 Combo Low Water Cut-Off and Pump Controllers for Steam Boilers
The McDonnell & Miller 194 is a reliable combination low water cut-off and pump controller designed for commercial and industrial low or high-pressure steam boilers. This device ensures consistent water level control within the boiler, regardless of operating pressure, safeguarding the system and optimizing performance.
Ideal for boilers of any steaming capacity, this unit integrates a water column with integral tappings suitable for gauge glass and tri-cock installations. Its magnetic repulsion technology eliminates the need for bellows, enhancing durability and reducing maintenance requirements.
Key Features
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Consistent Water Level Control
Maintains a stable and accurate boiler water level across all operating pressures. -
Versatile Application
Suitable for steam boilers of any capacity, from low to high pressure. -
Integrated Water Column
Features integral tappings designed for easy installation of gauge glasses and tri-cocks. -
No. 5 Switch Included
Provides reliable switching function for water level detection. -
Magnetic Repulsion Technology
Eliminates the need for fragile bellows, resulting in improved longevity and reliability.
Options
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Manual Reset Capability
Allows manual reset for added safety control if desired. -
7B Switch (Proportional Control)
Optional proportional control switch (0-135 ohm) to maintain constant boiler water level automatically. -
1-1/4" NPT Threaded Connections
Standard connection size for easy integration with existing systems. -
Maximum Operating Pressure
Rated for boilers operating up to 250 psi (17.6 kg/cm²). -
Robust Mounting
Equipped with a durable ten-bolt flange for secure installation.
Technical Specifications
| Specification | Details |
|---|---|
| Application | Steam Boilers |
| Device Type | Combination Low Water Cut-Off and Pump Controller |
| Switch Type | No. 5 Switch |
| Maximum Pressure | 250 psi (17.6 kg/cm²) |
| Reset Type | Automatic |
| Features | Includes integral water column |
| Connection Thread Size | 1-1/4" NPT |
| Mounting | Ten bolt flange |
| Dimensions (H x W x D) | 20-1/2" length x 6" width x 13-1/16" depth |
| Pilot Duty Rating | 345 VA |
| Connection Type | Threaded |
Summary
The McDonnell & Miller 194 Combo Low Water Cut-Off and Pump Controller offers dependable water level management for steam boilers in commercial and industrial settings. Its rugged construction, ease of installation, and precise control features make it an essential component for boiler safety and efficiency.
