Conbraco 20-150-00 Gauges

The Conbraco 20-150-00 is an industrial-grade rough bronze water gauge set designed for reliable liquid level monitoring in boiler and tank applications. Engineered with 1/2" NPT male connections and a 5/8" OD x 12" length standard glass, this assembly features automatic ball checks to prevent media loss in the event of glass breakage. The construction utilizes Teflon stem packing and EPDM glass seals to ensure leak-free performance under thermal cycling. Rated for 125 PSI at 350°F and up to 300 PSI at 100°F, this Apollo valves water gauge provides a robust solution for medium-pressure steam and hydraulic systems. An aluminum type wheel allows for precise manual shut-off, making it a staple for contractors requiring durable boiler sight glass hardware. The rough bronze finish offers excellent corrosion resistance, ensuring long-term service life in demanding mechanical rooms and industrial environments where clear visual level indication is critical.

Key Benefits for Technicians

• Automatic Ball Checks: Provides essential safety by stopping flow if the gauge glass fails under pressure.
• High-Temperature Seals: Integrated EPDM glass seals and Teflon packing withstand consistent thermal stress without degradation.
• Industrial Pressure Ratings: Rated for 300 PSI cold water pressure, making it versatile for both HVAC and process piping.
• Standardized Fit: The 1/2 inch NPT connection ensures compatibility with standard boiler taps and commercial tank ports.
• Durable Construction: Heavy-duty rough bronze body resists dezincification and mechanical fatigue.

Common Technical Questions

What is the purpose of the automatic ball checks in the Conbraco 20-150-00?
The ball checks act as internal safety valves. If the sight glass breaks, the pressure differential forces the stainless steel balls into the seats, preventing hot water or steam from escaping the vessel.

Can this water gauge be used for low-pressure steam applications?
Yes, the unit is rated for saturated steam up to 125 PSI at 350°F, making it suitable for most commercial low-pressure steam boiler systems.

Is the glass included with the gauge set?
This specific model is designed for use with 5/8" OD glass tubing. Technicians should verify the center-to-center distance to ensure the 12" length provided or required matches the installation footprint.

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.