Relief Valves 101: How They Work and Are Tested

We’ve pulled together the best clips from The Boiling Point to give you a no-nonsense 101-level introduction to relief valves. Whether you’re new to boilers, brushing up on the basics, or managing valve maintenance — this is your go-to guide.

From how relief valves actually work to the difference between testing, repair, and “recertification” (spoiler: that’s not a real thing), this video is packed with essential knowledge for anyone working around steam, air receivers, or pressurized systems.

📕 Chapters:

0:00 - Intro: Relief Valves 101 & Why They Matter

0:11 - How a Spring-Loaded Relief Valve Works

1:13 - Ring Adjustments: Lift, Blowdown & Performance

2:35 - Set Pressure Tolerances & Testing Explained

3:38 - Spring Selection & VR Repair Requirements

4:57 - Manual Test Lever & Testing Frequency

6:18 - Repair vs Recertification: Clearing Up the Terms

7:03 - Test-Only vs Full Valve Repair Process

8:36 - How We Inspect, Test & Tag Relief Valves

10:34 - VR Stamping & Quality Control Explained

12:24 - Elastomeric O-Rings & Why Timely Repair Matters

13:22 - Importance of Using a VR Certified Shop

14:13 - Sizing of Relief Valves

👉 Need parts, repairs, or expert help?

Visit boilerwarehouse.com or contact our team for valve service you can trust.

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