Conbraco 25-501-03 Water Gauge

The Conbraco 25-501-03 Water Gauge set is a heavy-duty boiler sight glass valve engineered for critical liquid level monitoring in high-pressure steam and hydronic systems. Featuring 1/2 inch NPT male connections, these valves are cast from high-grade polished bronze to ensure structural integrity and long-term corrosion resistance in harsh boiler room environments. The assembly utilizes automatic ball checks as a standard safety feature to prevent fluid loss in the event of glass breakage. For high-temperature stability, the unit is fitted with PTFE with Hypalon stem packing and an EPDM glass seal, providing a reliable leak-proof interface. With a robust aluminum type wheel for manual operation, this gauge is rated for 400 PSI at 100°F and 200 PSI at 400°F. This makes it an essential component for technicians maintaining industrial boilers or storage tanks requiring ASME-compliant water level indicators.

• Automatic Ball Checks: Provides immediate shut-off if the gauge glass fails, enhancing mechanical room safety.
• High-Temperature Seals: The combination of PTFE, Hypalon, and EPDM ensures thermal expansion compatibility without compromising the pressure seal.
• Durable Bronze Construction: Designed to withstand steam boiler water treatment chemicals and minimize galvanic corrosion.
• Precision Aluminum Handwheel: Allows for positive shut-off and easy operation even when wearing heavy work gloves.

What is the maximum pressure rating for the Conbraco 25-501-03?
This 1/2 NPT water gauge is rated for a maximum working pressure of 400 PSI at ambient temperatures (100°F) and 200 PSI for saturated steam applications up to 400°F.

Are these valves compatible with standard 5/8 inch gauge glass?
Yes, the 25-501 series is designed to accommodate standard 5/8" OD glass tubing, which is the industry standard for most commercial liquid level gauges.

Can the ball checks be removed for low-pressure gravity systems?
While typically used for safety, if your specific application requires a free-flow gravity feed, ensure your local mechanical codes permit the use of non-ball check configurations before modification.

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.