Conbraco Industries 20-250-03 Water Gauge

The Conbraco 20-250-03 Water Gauge is a heavy pattern liquid level indicator engineered for the demanding environments of industrial boilers and storage tanks. This 1/2" MNPT water gauge set is constructed from rugged bronze, featuring an integrated automatic ball check system. These stainless steel balls are designed to seat immediately in the event of glass breakage, effectively sealing off the pressure and preventing hazardous fluid loss—a critical safety feature for high-pressure steam boiler sight glass applications. The EPDM glass seals and Teflon stem packing provide superior chemical resistance and a leak-proof seal even under significant thermal cycling. Rated for 400 PSI at 100°F and 200 PSI at 400°F, this Conbraco gauge cock is the industry standard for contractors requiring dependable boiler water level monitoring. The aluminum hand wheel ensures ergonomic operation and long-term durability in mechanical rooms.

Key Benefits for Contractors

• Enhanced Safety: The automatic ball checks provide an essential fail-safe, protecting personnel and equipment from scalding or flooding if the gauge glass fails.
• High-Temperature Durability: Equipped with Teflon packing and EPDM seals to maintain integrity across a wide temperature range up to 400°F.
• Industrial Spec Compliance: Heavy-duty bronze construction meets the rigorous requirements for process control systems and industrial tank level indicators.
• Easy Installation: Standard 1/2 inch NPT male connections allow for straightforward integration into existing piping manifolds.

Common Questions

What is the purpose of the automatic ball checks in this gauge?
The ball checks act as an internal safety shut-off. If the tubular glass breaks, the resulting pressure differential forces the balls against their seats, stopping the flow of steam or liquid.

Is this water gauge set compatible with 5/8" OD glass?
Yes, the Conbraco 20-250 series is specifically machined to accept standard 5/8" outside diameter sight glass tubes.

Can I use this model on a low-pressure steam boiler?
While rated for high-pressure industrial use (up to 200 PSI @ 400°F), this bronze water gauge is frequently used on low-pressure systems where a more robust, "heavy pattern" construction is preferred over standard duty models.

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.