Conbraco 25-502-00 Gauge

The Conbraco 25-502-00 Gauge is a professional-grade square pattern water gauge set designed for high-pressure boiler water level monitoring. Constructed from polished bronze, this unit features 1/2" NPT male connections and is supplied with a 5/8" OD x 12" length standard glass tube for clear visual interface tracking. Internally, the gauge is equipped with automatic ball checks to prevent hazardous fluid loss in the event of glass breakage, a critical safety feature for steam applications. The sealing system utilizes a PTFE with Hypalon stem packing and an EPDM glass seal, ensuring chemical compatibility and leak-free performance under varying thermal loads. Rated for 400 PSI at 100??F and 200 PSI at 400??F, this liquid level gauge is built for the rigors of industrial hydronic environments. The composite plastic type wheel provides ergonomic control while maintaining high-temperature durability, making it a standard choice for contractors requiring reliable Apollo 25-502-00 specifications.

• Safety Shut-off: Integrated automatic ball checks instantly restrict flow if the sight glass is compromised, protecting personnel and equipment.
• High-Temperature Durability: Rated for up to 400??F at 200 PSI, making it suitable for low to medium pressure steam boiler service.
• Superior Sealing: The combination of EPDM glass gaskets and PTFE/Hypalon packing offers excellent resilience against common boiler chemicals and thermal cycling.
• Rugged Construction: Heavy-duty polished bronze body resists corrosion and provides long-term structural integrity in demanding boiler rooms.

What is the purpose of the ball checks in the Conbraco 25-502-00?
The automatic ball checks are safety mechanisms that seat against the orifice if the glass breaks. This prevents the uncontrolled release of high-pressure steam or hot water, which is a standard requirement for many HVACR and industrial safety protocols.

Can this gauge be used for petroleum-based fluids?
While the bronze body and PTFE packing are highly resistant, the standard EPDM glass seal is generally not recommended for petroleum products. For oil-related service, a Viton seal swap is typically required to ensure compatibility.

How do I prevent the glass from breaking during installation?
Always ensure the top and bottom 1/2" MNPT fittings are perfectly aligned. Use the 5/8" OD glass as a guide and avoid any metal-to-glass contact. Hand-tighten the packing nuts and then apply a 1/2 turn with a wrench to avoid over-compressing the EPDM seals.

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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.