Conbraco 20-253-00 Gauges

The Conbraco 20-253-00 is an industrial-grade rough bronze water gauge designed for reliable fluid level monitoring in commercial boiler and tank applications. Built with 3/4" NPT male connections and featuring a 3/4" OD x 16" length standard glass, this assembly utilizes automatic ball checks to prevent accidental media discharge in the event of glass breakage. The unit is engineered for high-temperature resilience, utilizing EPDM glass seals and durable Teflon stem packing to maintain a vacuum-tight seal under thermal cycling. The aluminum type wheel provides precise manual control, while the heavy-duty bronze body supports a pressure rating of 200 PSI @ 400F or 400 PSI @ 100F. This water level indicator is a standard-spec component for contractors requiring boiler sight glass replacement parts that meet strict ASME power boiler requirements for safety and durability in pressurized systems.

• Automatic Safety Shut-off: Integrated ball checks provide immediate protection against leaks if the gauge glass is compromised.
• High-Pressure Tolerance: Rated for 400 PSI at ambient temperatures, making it suitable for high-demand hydraulic and steam applications.
• Chemical Resistance: Equipped with Teflon stem packing and EPDM gaskets to resist degradation from common boiler chemicals.
• Direct Fit Compatibility: Standard 3/4 inch NPT threading ensures seamless integration into existing Conbraco 20 series manifold configurations.

Common Questions

What is the maximum operating temperature for the Conbraco 20-253-00?
This rough bronze gauge is rated for 200 PSI at a maximum temperature of 400F, ensuring stability in high-pressure saturated steam environments.

Does this unit prevent scalding or leaks if the glass breaks?
Yes, the automatic ball checks act as a safety check valve, seating immediately to stop the flow of hot water or steam if the sight glass fails.

Can I use different glass lengths with this gauge set?
The 20-253-00 is specifically configured for a 3/4" OD x 16" length glass; however, the offset pattern of the Apollo Conbraco valves allows for minor adjustments during installation to ensure proper alignment.

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.