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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 Control valves, Valve Leakage, Valve Testing
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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 Pressure Relief Valves, Valve Leakage
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How Often Should Pressure Relief Valves Be Replaced?
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 Preventative Maintenance, Valve Leakage, Valve Testing, ValveKeep
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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
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
Control 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
Why Is My Valve Leaking? Types Of Valve Leakage and Symptoms
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 ANSI, API, MSS, Sizing and Selection, Valve Leakage
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API 527 Pressure Testing Standards Manual
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 API, API 527, Valve Leakage, Valve Testing
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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 ANSI, ANSI/FCI 70-2, FCI, Valve Leakage, Valve Standards
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MSS Standard SP-61 – Leakage Allowance
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 MSS, MSS SP-61, Valve Leakage, Valve Testing
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