McDonnell & Miller 334600 Fittings

The McDonnell & Miller 334600, also identified by model number MA559, is a specialized set of Quick Hook-Up Fittings engineered specifically for Series 67 Low Water Cut-Offs. These fittings are essential for technicians performing a boiler control replacement or streamlining the installation of float-type water level controls on steam boilers. By utilizing these NPT pipe fittings, contractors can achieve a direct, secure connection to the gauge glass tappings, facilitating reliable performance and reducing labor time during HVAC maintenance. Built with a robust design, the MA559 is compatible with models 67 and 67-G, and it can also be used to convert model 67-LQHU into a standard 67 configuration. This package provides the necessary steam boiler components to ensure precise liquid level control and prevent hazardous low-water conditions in both residential and commercial applications. The durable construction minimizes the risk of leaks at the gauge glass connection points, maintaining system integrity in demanding high-pressure environments.

• Optimized Compatibility: Designed explicitly for McDonnell & Miller Series 67 and 67-G low water cut-offs.
• Simplified Installation: Facilitates quick hook-up to the boiler's gauge glass tappings without complex piping adjustments.
• System Conversion: Enables the conversion of 67-LQHU models to the standard 67 series functionality.
• Durable Infrastructure: Heavy-duty materials withstand the thermal stresses inherent in steam boiler operations.

Common Questions Regarding the McDonnell & Miller 334600

Can I use these fittings on a Series 767 control?
No, the Series 767 is equipped with a 2-1/2-inch pipe tap opening in the body for direct boiler connection and does not require these quick hook-up fittings.

Are these fittings compatible with third-party low water cut-offs?
The MA559 is specifically engineered for McDonnell & Miller 67 Series; using them on non-specified brands may result in compatibility issues or improper water level readings.

Is this a complete replacement for the low water cut-off?
No, this SKU (334600) consists of the fitting set only and is intended as a replacement part or installation accessory for the control unit itself.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.