1/2" Union Sweat Mixing Valve, Lead-Free, 70-145 F

Honeywell AM-1 Series 1/2" Mixing Valve – Precision Temperature Regulation for Hot Water Systems

The Honeywell AM-1 Series Mixing Valve is designed to deliver reliable water temperature control in residential and light commercial hot water systems. Built to automatically blend hot and cold water, this valve ensures safe, consistent outlet temperatures—reducing the risk of scalding while increasing usable hot water volume.

Engineered for versatility, it supports both mixing and diverting functions and includes safety mechanisms that respond rapidly to cold water supply interruptions. With high-quality materials, lead-free certification, and internal components built for longevity, this valve is a dependable solution for maintaining temperature balance in plumbing systems.

Performance-Driven Features

• Dual Function Design – Functions as either a mixing or diverting valve based on system configuration
• Rapid Shutoff Response – Flow is reduced within seconds when cold water fails, preventing sudden temperature spikes
• Wide Operating Range – Handles up to 150 PSI and 212°F, suitable for high-demand hot water applications
• Low Minimum Flow Requirement – Operates reliably at flow rates as low as 0.5 GPM
• Corrosion-Resistant Build – Nickel-plated brass body and Teflon-coated internal components limit scale buildup and extend service life
• EPDM Seals and O-Rings – Provide excellent resistance to high temperatures and waterborne chemicals
• NSF 61 & ASSE 1017 Certified – Lead-free compliant and approved for use in potable water systems

Technical Specifications

• Valve Size: 1/2 inch
• Material: Nickel-plated brass with EPDM seals
• Maximum Pressure: 150 PSI
• Temperature Range: 60°F – 212°F
• Flow Requirements: Minimum 0.5 GPM
• Certifications: NSF 61, ASSE 1017

Installation Guidance

Professional installation is recommended for the Honeywell AM-1 Mixing Valve to ensure compliance with plumbing codes and to achieve optimal functionality. Proper alignment, sealing, and valve orientation are essential for system performance. Plumbers should verify cold water shutoff capability and adjust temperature settings according to the application requirements.

Contractor Insights

For Installers: The AM-1 series is ideal for water heater outlets, radiant heating loops, and fixture-specific installations where outlet temperatures must remain controlled. Its modular design supports easy service, while its field-adjustable temperature range offers flexibility across a variety of system designs.

For System Designers: This mixing valve supports code-compliant domestic hot water distribution and is suitable for integration with recirculating loops and point-of-source controls. Built-in fail-safes and durable construction make it a reliable choice for maintaining water safety and comfort across installations.

Upgrade Your Water System with Confidence

The Honeywell AM-1 Series Mixing Valve offers a precise, safe, and efficient solution for hot water delivery. Whether you're enhancing residential systems or designing plumbing for multifamily dwellings, this valve ensures user safety, reduces hot water waste, and simplifies maintenance. Choose the AM-1 for consistent temperature control backed by proven performance.