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Flow test bleeder valves are essential tools for releasing trapped air and debris before taking static pressure readings during flow tests. At QRFS, our selection of brass bleed valves is designed for long-lasting operation, reliable performance, and easy use. Each product, in concert with quality pressure test caps and pressure gauges, helps ensure accurate flow tests.
Our bleeder valves are available in multiple sizes with NPT threads, plus we have quick-connect options. Whether you need a single-ball or double-ball valve, QRFS carries equipment that enables consistent pressure readings.
When conducting a flow test, a quality bleeder valve ensures excess air and debris are released safely. After bleeding is complete, closing the valve sends pressure to a mounted gauge (sold separately). These valves are durable, reliable, and designed for repeated use in harsh environments when assessing static pressure during tests of fire hydrants, hoses, and more.
At QRFS, you’ll find bleeder valves that integrate seamlessly with test caps and pressure gauges, giving you a complete solution for accurate flow testing. We also carry full flow testing kits and other parts to meet all your testing needs and scenarios.
Each product is backed by QRFS expertise and fast shipping. Explore our full line of flow test bleeder valves and ensure your fire protection equipment performs properly and stays in top condition.
What is a bleeder valve used for in fire protection testing?
A bleeder valve is used to release trapped air or debris before pressure reaches a gauge. This helps ensure more accurate readings and protects the gauge from sudden pressure surges. It’s commonly used during hydrant flow testing and system testing.
Why open a bleeder valve before applying pressure to a gauge?
Opening the bleeder valve first allows any trapped air or foreign matter to escape. This prevents inaccurate readings and reduces the risk of damaging the gauge. It also helps ensure smoother, more controlled pressure application.
What is the purpose of a bleeder port on a hydrant test setup?
The bleeder port allows pressure to be safely released between the hydrant test cap and the pressure gauge. This helps prevent trapped pressure from building up when the hydrant valve is closed. Using the bleeder port properly protects the gauge and improves safety during testing.
What’s the difference between a single- and double-ball bleeder valve?
A single-ball bleeder valve uses a single valve to control both bleeding and pressure flow to the gauge. A double-ball version separates these functions, with one valve for bleeding and another for controlling pressure to the gauge. This added control can improve safety and precision during testing.
How do bleeder valves help protect pressure gauges?
Bleeder valves prevent sudden pressure spikes and allow contaminants to be flushed out before reaching the gauge. This reduces wear and helps maintain gauge calibration accuracy over time. As a result, gauges tend to last longer and perform more reliably.
What is a quick disconnect fitting used for with a bleeder valve?
A quick-disconnect fitting allows the pressure gauge to be easily attached or removed from a pitot tube or a bleeder assembly. This speeds up setup and teardown during testing. It also helps reduce wear on the parts.
How do bleeder valves improve testing accuracy?
By removing trapped air and debris, bleeder valves help ensure that only water pressure reaches the gauge. This leads to more consistent and reliable readings. Accurate measurements are critical for evaluating system performance and compliance.