Tag Archives: Valve Leakage

Warning: Hydrostatic Testing of Systems with Valves Containing Thermodiscs May Damage the Valves

Safety valves that contain a Thermodisc, such as the Consolidated 1811 series or the Consolidated 1700 series (Maxiflow), are designed for steam service only. If the valve is opened even slightly with water, it may, at minimum, damage the Thermodisc. … Continue reading

Posted in The Valve Expert, Troubleshooting, Valve Leakage | Tagged , , | Comments Off on Warning: Hydrostatic Testing of Systems with Valves Containing Thermodiscs May Damage the Valves

Answers to 3 Common Questions About Pressure Relief Valves

Your pressure relief valves are the best insurance you have against safety incidents in your plants and along your pipelines. We get a lot of questions from customers about how to select and operate pressure relief valves. Here are answers … Continue reading

Posted in The Valve Expert, Troubleshooting | Tagged , | Comments Off on Answers to 3 Common Questions About Pressure Relief Valves

How Often Should You Repair or Replace Pressure Relief Valves?

Your pressure relief valves are the most important pieces of safety equipment in your facility or along your pipeline system. There’s no margin for error. Your PRVs need to work — every time. So how do you know when you … Continue reading

Posted in Preventative Maintenance, The Valve Expert, Valve Leakage, Valve Standards | Tagged , , , , | Comments Off on How Often Should You Repair or Replace Pressure Relief Valves?

Why is My Valve Opening Early?

A question we commonly receive is why a valve appears to open, or actuate, earlier than expected. Often, we find that the valve is not, in fact, opening early. Rather, the perception that it is actuating early is due to … Continue reading

Posted in The Valve Expert | Tagged , | Leave a comment

7 Ways to Reduce Fugitive Emissions Along Your Pipeline

Reducing fugitive emissions, particularly methane, is a major priority in the fight against climate change. The EPA estimates that 45% of total methane emissions come from the production segment of the oil and natural gas industry, and earlier this year, … Continue reading

Posted in Industry News and Trends, The Valve Expert | Tagged , , | Leave a comment

Valve Leakage Tests Explained

All valves are inspected and tested by the manufacturer to ensure that they conform to the required valve leakage standards. In addition, optional testing can be requested by the purchaser, and regular testing is critical for ongoing valve maintenance and … Continue reading

Posted in Preventative Maintenance, The Valve Expert, Valve Leakage, Valve Standards | Tagged , , | Leave a comment

Why is My Valve Leaking?

Valve leakage is a common occurrence in industrial settings. Even valves labeled as “zero leakage,” or “bubble tight,” are not necessarily completely leakage-free. This article explores the types and common causes of valve leakage, and then provides information about industry … Continue reading

Posted in The Valve Expert, Troubleshooting, Valve Leakage, Valve Standards | Tagged , , , , | Leave a comment

API Standard 527

API Standard 527, from the American Petroleum Institute, describes seat tightness testing and the maximum acceptable leakage rates for pressure relief valves. The current version of the standard was reaffirmed in 2007. Scope API 527 covers seat tightness testing of … Continue reading

Posted in The Valve Expert, Valve Leakage, Valve Standards | Tagged , , , | Leave a comment

ANSI/FCI Standard 70-2

ANSI/FCI Standard 70-2, from the American National Standards Institute and the Fluid Controls Institute, defines leakage classifications specifically for control valves. Scope ANSI/FCI 70-2 is the industry standard for control valve leakage. Classifications ANSI/FCI 70-2 defines six classifications of control … Continue reading

Posted in The Valve Expert, Valve Leakage, Valve Standards | Tagged , , , , | Leave a comment

MSS Standard SP-61

MSS Standard SP-61, from the Manufacturers Standardization Society, establishes leakage allowances and provides guidance for testing valves typically used in “full open” and “full closed” service, such as check, isolation, and stop valves. It is not intended for use with … Continue reading

Posted in The Valve Expert, Valve Leakage, Valve Standards | Tagged , , , | Leave a comment