McDonnell & Miller 193-D-1 Replacement Casting

The McDonnell & Miller 193-D-1 Replacement Casting is a critical structural component engineered specifically for Series 193 combination low water cut-off and pump controllers. This high-grade casting provides the necessary housing for float-operated mechanisms used in commercial steam boiler applications. Designed with 1-inch NPT tappings, the 193-D-1 ensures a secure, leak-proof interface with equalizing piping, maintaining the integrity of the water column. As a veteran technician knows, using genuine McDonnell & Miller replacement parts is essential for sustaining the precise buoyancy and mechanical alignment required to trigger the No. 5 switch or proportional control signals. This rugged boiler water level control casting is built to withstand the thermal cycling and pressure demands of systems operating up to 150 psi. Whether you are performing a full rebuild or addressing a cracked housing, this casting facilitates the reliable performance of your pump controller, preventing catastrophic dry-fire conditions by ensuring accurate liquid level sensing within the water chamber.

• Direct OEM Compatibility: Precision-engineered for the McDonnell & Miller 193-D Series, ensuring exact alignment with internal float mechanisms.
• Durable Construction: Made from high-grade casting material to handle the high-pressure environment of industrial steam boilers.
• Standardized Tappings: Features 1-inch NPT connections for seamless integration into existing equalizing lines and blow-down valve setups.
• System Reliability: Restores the structural integrity of the low water cut-off, supporting 150 psi maximum operating pressure.

• What specific models does the 193-D-1 casting fit? It is designed as a replacement body for the 193-D variant of the Series 193 LWCO and pump controllers.
• Does this include the head mechanism or switches? No, this part is the casting (housing) only. Internal components like the float, rod, and switches must be transferred or purchased separately.
• Can this be used for Series 194 controllers? No, Series 194 units typically require different casting configurations to support higher pressure ratings. Always verify your specific model number before installation.

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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.