Conbraco 21-250-03 Bronze Water Gauge 1/2 Inch MNPT Extended Shank

The Conbraco 21-250-03 is a heavy-pattern bronze water gauge designed for accurate liquid level monitoring in boilers, hydronic systems, and other high-pressure applications. This model features an extended shank configuration with a 1-3/4 inch shank length, ideal for penetrating outer jackets or insulation. The gauge body is sold without glass and rod, allowing for custom glass length selection up to 72 inches.

Key Specifications:

• 1/2 inch male NPT threaded connection for standard piping systems
• Standard glass size: 5/8 inch OD x 12 inch length (glass sold separately)
• Extended shank design with 1-3/4 inch shank length
• Automatic ball check valves included to prevent fluid loss if glass breaks
• Rated for 200 psig at 400°F and 400 psig at 100°F
• Constructed from heavy-pattern ASTM-B584 bronze for superior strength and corrosion resistance
• Lead-free construction complies with Federal Public Law 111-380
• CRN registered (OF6616.5C)

Important Note: This gauge is sold without glass tube and rod assembly (indicated by the -03 suffix). Glass, rod, gaskets, and guard rods must be ordered separately to complete the installation. The extended shank design provides additional reach for applications requiring penetration through insulation or vessel walls.

Part of the Apollo/Conbraco 21-250 series, this gauge is engineered for demanding industrial applications where durability and safety are essential, including steam boilers, pressure vessels, and process systems requiring reliable liquid level indication.