Watts 0346044 Valve

The Watts 0346044 Steam Relief Valve is a high-capacity bronze safety valve precision-engineered for low-pressure steam heating boilers and industrial process equipment. As part of the Watts 415 Series, this 1-inch NPT valve is factory set at 15 PSI, providing a rated discharge capacity of 643 lbs/hr. This model, often cross-referenced as the 415-1-15, features a rugged bronze body and a stainless steel spring to ensure consistent performance in demanding environments up to 250°F. The integration of a non-stick PTFE disc-to-metal seat and a top-guided stem prevents sticking due to scale or corrosion, ensuring a tight shutoff after discharge. ASME Section IV certified, the 0346044 is the professional choice for contractors maintaining commercial steam boilers and overpressure protection for saturated steam systems.

Key Benefits for Technicians

• ASME Section IV Certified: Ensures compliance with strict safety codes for low-pressure steam vessels and heating boilers.
• Non-Stick PTFE Disc: Engineered to eliminate the common issue of seat-sticking, ensuring reliable lifting at the 15 PSI set point.
• High Discharge Capacity: Rated for 643 lbs/hr, making it suitable for larger commercial steam applications requiring rapid pressure relief.
• Corrosion Resistant: Features a high-grade bronze body and stainless steel internal components for longevity in high-heat, high-moisture environments.
• Direct OEM Replacement: Fully compatible with systems requiring parts 0346044, 415-1, or 415-1-15 for streamlined maintenance.

Common Questions

What is the difference between the Watts 415 and 315 series?
The Watts 415 series is designed for higher discharge capacities compared to the 315 series, making it the standard for larger commercial steam boilers where high-volume relief (lbs/hr) is critical for system safety.

Can this valve be used for water pressure relief?
No, the 0346044 is specifically set and ASME rated for steam service at 15 PSI. Using a steam-rated valve for water applications can result in inaccurate relief points and potential system damage.

Is the outlet size the same as the inlet?
Yes, this specific model features a 1" NPT female inlet and a 1" NPT female outlet, allowing for standard piping to discharge zones or manifold systems.

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.