Conbraco 37LF-201-01 Valve

The Conbraco 37LF-201-01 is a lead-free 1/2" vacuum relief valve engineered for heavy-duty commercial and residential water heating systems. This model is the direct replacement for 37-201-01, providing a seamless retrofit into existing piping layouts. Designed to automatically admit air into the supply system, it effectively prevents vacuum conditions that can lead to tank collapse or siphoning. It features a high 15 CFM venting capacity and is rated for a maximum pressure of 200 PSI at water temperatures up to 250°F. The all-bronze body construction ensures durability in high-demand HVACR environments. As a lead-free relief valve complying with low-lead mandates, it is ideal for potable water service in plumbing systems. Integrating this vacuum breaker into your water heater or tank prevents back-siphonage and potential equipment failure, maintaining system integrity under fluctuating pressure conditions.

• Direct Retrofit Compatibility: Engineered as a drop-in replacement for the legacy 37-201-01 model.
• Enhanced Safety: High 15 CFM capacity prevents negative pressure build-up and tank implosion.
• Rugged Construction: Bronze body and stainless steel springs provide reliability in 200 PSI wet-heat applications.
• Lead-Free Compliance: Safe for all potable water configurations and commercial water heater installs.
• Low Maintenance Design: Simple mechanical operation with a durable seat ensures longevity in high-temperature service.

Is the 37LF-201-01 compatible with older 37-201-01 installations?
Yes, this is the direct manufacturer replacement and uses the same 1/2" NPT connection and footprint.

What is the maximum operating temperature for this vacuum relief valve?
This valve is rated for continuous service in water systems up to 250°F (121°C).

Does this valve prevent backflow?
While it prevents back-siphonage caused by vacuums, it is specifically a relief valve designed to vent air and should be used alongside dedicated backflow preventers where code requires.

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.