1/2" Brass Pressure Relief Valve for Pump, Lead-Free, Male x Female

Campbell 1/2-Inch Pressure Relief Valve – Brass, Lead-Free, 75 PSI

The Campbell 1/2" Pressure Relief Valve is engineered to protect potable water systems from excessive pressure buildup. Designed for safety and reliability, this valve automatically opens when pressure exceeds the set point—helping to maintain system integrity and avoid potential equipment failure or leaks.

Constructed from lead-free brass, this valve meets modern safety standards and is ideal for residential and light commercial systems. With a fixed pressure rating of 75 PSI, it is commonly used in water heaters, thermal expansion loops, and general plumbing applications requiring dependable pressure relief.

Product Highlights

• Certified Lead-Free Brass – Complies with low-lead requirements, safe for potable water use.
• Fixed 75 PSI Rating – Ideal for thermal expansion protection and overpressure relief in domestic systems.
• Corrosion-Resistant Construction – Brass body withstands harsh water conditions and maintains consistent performance over time.
• Compact 1/2" FNPT x MNPT Design – Designed for tight spaces and easy inline installation.
• Field Proven Reliability – Trusted in new installations and replacement scenarios across a range of applications.

Technical Specifications

• Body Material: Low-lead brass
• Inlet/Outlet Size: 1/2" FNPT x MNPT
• Relief Pressure: 75 PSI (non-adjustable)
• Application: Liquid bypass and thermal expansion
• Use Case: Residential and commercial water systems
• Warranty: Limited manufacturer warranty

Installation Guidance

While the valve is designed for simple installation, it’s recommended that a licensed professional complete the work to ensure code compliance and proper orientation for discharge. The relief outlet should always point toward a safe drain path and never be capped or obstructed.

For the Trade Professional

This relief valve is a staple component for maintaining safety in closed water systems. It offers consistent, maintenance-free operation with a brass body that resists corrosion. For plumbing contractors, it’s a reliable choice for safeguarding water heaters and pressure-sensitive installations.

For Skilled Installers and Maintenance Teams

Whether you’re performing routine maintenance or upgrading an older relief valve, this 1/2" model offers straightforward installation with confidence in performance. It’s a compact, cost-effective solution that supports compliance and long-term durability in the field.

Ensure System Safety with Trusted Components

Choose the Campbell 1/2-Inch Lead-Free Brass Pressure Relief Valve to meet job specs and code standards. It delivers the performance professionals expect—keeping your systems safe, compliant, and protected from pressure-related damage.