This premium vacuum relief valve features a durable brass body with a protective black polymer cap, designed for reliable pressure regulation in various plumbing and industrial applications. The robust construction combines a precision-machined brass base with threading for secure installation and a wide mushroom-style cap that enables optimal pressure relief performance. The valve helps prevent vacuum damage in water heaters, boilers, and other pressurized systems by automatically allowing air to enter when negative pressure occurs. Its straightforward design ensures consistent operation while the corrosion-resistant brass construction provides long-lasting durability. The threaded male connection allows for easy installation in standard plumbing configurations. This essential safety component helps maintain system integrity and prevent tank collapse by equalizing pressure differentials in your equipment.