Watts 740-2-40

The Watts 740-2-40 relief valve is a reliable safety device designed to protect boilers and hot water systems from dangerous pressure buildup. This 2" x 2 1/2" relief valve is rated for 40 psi, providing dependable venting to prevent overpressurization in residential and light commercial applications. With a capacity of 6,440 MBtu, the unit is built to handle demanding operation while maintaining precise relief performance. The model designation F384240 ensures compatibility with legacy installations, and the product formerly listed as 0384240 confirms ongoing availability for maintenance and replacements.

Key features

• Size: 2" x 2 1/2" connection for flexible installation
• Pressure rating: 40 psi release to safeguard equipment
• Capacity: 6,440 MBtu relief capacity for steady operation
• Model compatibility: F384240 (formerly 0384240) for easy replacements
• Durable construction: dependable Watts design for long service life

Ideal for new installations or replacements, the Watts 740-2-40 delivers quick installation, reliable shutoff when needed, and consistent performance across varying temperatures. Its robust design supports compliance with safety standards, giving homeowners and technicians confidence in long-term operation and peace of mind.