Brass Adjustable Pressure Relief Safety Valve | Water Systems

Brass Adjustable Pressure Relief Safety Valve

Keep your closed water systems operating safely and efficiently with this heavy-duty Brass Adjustable Pressure Relief Safety Valve. Engineered from high-quality copper/brass, this threaded male-connection valve is designed to automatically vent excess pressure before it can cause damage to pipes, boilers, water heaters, or any sealed plumbing system — giving you reliable protection and long-term peace of mind.

Why Choose This Pressure Relief Valve?

• Adjustable Pressure Setting: Easily fine-tune the release threshold to suit your specific system requirements, up to <850 kPa.
• Premium Brass/Copper Construction: Corrosion-resistant and built to last in demanding water system environments.
• Threaded Male Connection: Standard threaded fitting for straightforward, leak-free installation on most water systems.
• Automatic Overpressure Protection: Activates instantly when pressure exceeds the set limit, then reseats itself — no manual intervention required.
• Versatile Application: Ideal for closed-loop heating systems, water heaters, boilers, solar thermal systems, and hydraulic lines.
• Durable & Low Maintenance: Robust valve seat and spring mechanism ensure consistent, repeatable performance cycle after cycle.

Product Specifications

How It Works

The valve continuously monitors line pressure within your closed water system. When pressure rises above your pre-set threshold, the spring-loaded mechanism automatically opens to release excess pressure. Once the pressure drops back within the safe range, the valve reseats and seals — protecting your system without wasting water or requiring a manual reset.

Ideal For

• Residential & commercial water heaters
• Closed-loop hydronic heating systems
• Solar thermal collectors
• Boilers and pressure vessels
• Hydraulic and fluid transfer lines

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For guidance on safe plumbing and pressure system standards, refer to the U.S. Consumer Product Safety Commission (CPSC) for relevant safety requirements and best practices.

Learn more: Relief valve

Frequently Asked Questions

Q: What is an adjustable brass pressure relief valve used for?

A: A brass adjustable pressure relief valve is used to protect closed water systems — such as boilers, water heaters, and hydronic heating loops — from dangerously high pressure. When system pressure exceeds the pre-set limit (up to <850 kPa), the valve automatically opens to release the excess, then reseats once safe pressure is restored.

Q: How do I install this threaded male pressure relief valve?

A: This valve features a standard threaded male connection, making installation straightforward. Simply apply thread seal tape (PTFE tape) to the male threads and screw the valve into the corresponding female port on your water system. Always ensure the system is depressurized before installation, and test at operating pressure to confirm a proper seal.

Q: Can I adjust the pressure setting after installation?

A: Yes — this valve is fully adjustable. You can fine-tune the release pressure to match your specific system requirements without replacing the valve. Always depressurize the system before making adjustments, and verify the new setting with a pressure gauge once the system is back in operation.

Q: Is this valve suitable for both hot and cold water systems?

A: The brass/copper construction makes this valve well-suited for a range of closed water systems, including both heated and ambient-temperature circuits. Always verify that the valve's pressure and temperature ratings are compatible with your specific application before installation.