Conbraco 20-150-03 Valves

The Conbraco 20-150-03 is a professional-grade liquid level verification solution designed for rigorous HVAC and industrial boiler applications. Constructed with a robust rough bronze body, this 1/2 inch NPT water gauge valve set is engineered to handle demanding thermal cycles, featuring a performance rating of 125 PSI at 350??F and up to 300 PSI at 100??F. For technicians, the integration of automatic ball checks is a critical safety feature, designed to instantly check the flow and prevent fluid loss in the event of sight glass breakage. The Teflon stem packing and EPDM glass seal ensure high-integrity sealing against a variety of media, while the durable aluminum handwheel provides reliable manual actuation even in high-heat environments. This standard pattern bronze water gauge is a staple for contractors maintaining pressure vessels and steam systems where accurate, real-time level monitoring is non-negotiable.

• Automatic Safety Shutoff: The automatic ball checks provide a fail-safe against catastrophic leaks if the gauge glass fails.
• High-Temperature Durability: Rated for up to 350??F, making it ideal for saturated steam and high-temp fluid applications.
• Leak-Free Performance: Teflon stem packing minimizes maintenance requirements by providing a superior chemical and heat-resistant seal.
• Contractor Grade Materials: Features a rough bronze construction and aluminum type wheel for long-term survival in equipment rooms.

Is the glass included with the Conbraco 20-150-03?
Standard 20-150-03 sets are typically sold as the top and bottom valves only; 5/8" OD sight glass and guard rods must be sourced separately to fit your specific center-to-center dimensions.

What is the purpose of the automatic ball checks on this model?
The automatic ball checks are safety internals that seat automatically when a sudden pressure differential occurs (like a glass break), preventing the vessel from emptying through the gauge ports.

Can I use this valve for high-pressure steam boiler applications?
Yes, the 20-150 series is designed for liquid level verification on boilers, provided your operating parameters do not exceed 125 PSI at 350??F. Always verify your local boiler codes for water gauge requirements.

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.