Email: [email protected]
Add: #407 Rongxing Rd, Shanghai, China
Wechat: +86 199 2125 0077
WhatsApp: +86 185 1656 9221
thintank control valve manufacturer

Share optimized solutions, professional valve knowledge and industry news

Please enter the relevant terms or keywords you need to consult, and relevant articles will appear in the search results. If you can’t find the answer you need, please feel free to contact us and we will be happy to help. Or you can directly send an email to [email protected]

What Causes a Pressure Relief Valve to Fail

In cases of pressure relief valve failure or other pressure relief valves malfunctioning, the integrity of the system is compromised posing a serious risk. This article will explore the details of pressure relief valve failure, exploring how regular maintenance and understanding the valve's set pressure are essential for preventing downtime and sustaining a safe operational environment.
Table of Contents
    Add a header to begin generating the table of contents

    Pressure relief valves stand as crucial components in industrial setups when the system reaches maximum pressure, designed to maintain normal operating pressure and avoid the dangers of excess pressure generated by the system. The adjustment of pressure relief valves to the right set pressure is crucial for their proper functioning and preventing the system pressure from reaching its maximum. In cases of pressure relief valve failure or other pressure relief valves malfunctioning, the integrity of the system is compromised posing a serious risk. This article will explore the details of pressure relief valve failure, exploring how regular maintenance and understanding the valve’s set pressure are essential for preventing downtime and sustaining a safe operational environment.

    pressure relief valve
    pressure relief valve

    Signs of Pressure Relief Valve Failure

    Pressure relief valves play a pivotal role in maintaining the delicate balance of industrial systems, but their failure shows clear signs that require immediate attention attention.

    different type of relief valves
    different type of relief valves

    A. System Cannot Reach Pressure

    Possible Causes and Solutions

    If your system struggles to attain its designed pressure, potential issues with the pressure relief valve may be at play. Adjusting the valve to the correct set pressure should be a primary consideration.

    Changes in the plant design without Adjusting the pressure relief valves may lead to early releases. Adjusting the valve’s set pressure is vital to align with the system’s new normal operating pressure.

    B. System is Over Maximum Pressure

    Causes and Troubleshooting for Overpressure Situations

    If your system exceeds the maximum pressure, it indicates a potential functional failure of the pressure relief valves. Recalibrate pressure relief valves and investigate the system’s overall functionality and correct set pressure are key steps in troubleshooting.

    general design of a spring operated srv
    general design of a spring operated srv

    C. Pressure Relief Valve is Leaking or Has No Pressure

    1. Impact on System Efficiency

    pressure relief valve leaking can compromise system efficiency, leading to suboptimal production. Additionally, a pressure relief valve with no pressure may indicate issues like a plugged balance hole, a broken spring, or a loose fit.

    2. Common Causes and Solutions

    Causes of pressure relief valve leakage range from contaminants to misalignments. Regular maintenance, including thorough inspections and vigilant testing, is imperative to address these issues and maintain optimal valve performance.

    Troubleshooting and Maintenance

    A well-executed maintenance routine is the cornerstone of ensuring the longevity and reliability of pressure relief valves. Understanding the complexities of troubleshooting and proactive maintenance is crucial for sustaining optimal system performance.

    A. Importance of Regular Maintenance

    • Regular maintenance, including recalibrating pressure relief valves to their correct set pressure, is imperative for preventing pressure relief valve failure.
    • Systematic checks and adjustments uphold the valves’ ability to function properly, reducing the risk of issues like excess pressure and leaks.

    B. Testing and Inspection Procedures

    • Complete testing and inspection procedures, including pressure valve leakage checks, are vital components of preventative maintenance.
    • Recognizing the importance of safety relief valves, operators should implement testing protocols, ensuring these valves open at the correct set pressure to avert overpressure events.

    C. Recognizing Signs of Wear and Issues

    • Attentive inspection practices aim to identify signs of wear, such as worn valve stems or malfunctioning valve components, before they escalate.
    • Understanding the system pressure and normal operating pressure parameters is crucial for recognizing deviations that may signal potential issues.

    D. Addressing Common Problems with Pressure Relief Valves

    • Troubleshooting common problems involves a comprehensive approach, including assessing the maximum pressure, recalibrating valves with wrong set pressure, and addressing issues that lead to system overpressure.
    • By recognizing pressure relief valve failure as a symptom rather than the problem itself, maintenance efforts can be directed at the root causes, such as misalignments or wear, to prevent unplanned downtime.

    Implementing a proactive maintenance strategy, enriched with comprehensive testing and troubleshooting, ensures that pressure relief valves continue to function optimally, upholding the safety and efficiency of industrial systems.

    Understanding the Root Causes

    Exploring the root causes of pressure relief valve failure unveils the broader context that shapes the reliability and effectiveness of these crucial components within industrial systems. Recognizing the greater problems behind failures provides valuable insights into the longevity and optimal functioning of pressure relief valves.

    A. The Greater Problem Behind Pressure Relief Valve Failure

    • Pressure relief valve failure is often a symptom rather than the problem itself, necessitating a comprehensive investigation into the underlying issues.
    • Exploring causes like wrong set pressures, system overpressure, or valve misalignments allows for targeted solutions that address the core problems impacting valve performance.

    B. The Lifespan of Properly Maintained Pressure Relief Valves

    • When subjected to regular maintenance, including recalibration to the correct set pressure, pressure relief valves can have a lifespan of up to thirty years.
    • Understanding the factors influencing the longevity of these valves underscores the significance of proactive measures to ensure extended, trouble-free service.

    C. The Role of Preventative Maintenance in Valve Longevity

    • Preventative maintenance emerges as a pivotal factor in prolonging the lifespan of pressure relief valves, safeguarding against common issues such as excess pressure and valve leakage.
    • By addressing potential wear and issues before they escalate, preventative maintenance practices contribute significantly to sustaining the reliability and functionality of pressure relief valves.

    Appreciating the greater problems behind pressure relief valve failures reveals the path to enhanced valve longevity, highlighting the indispensable role of preventative maintenance in ensuring the continued safety and efficiency of industrial systems.

    Common Reasons for Pressure Relief Valve Issues

    A. Operating pressure set too close to the valve’s stamped set pressure

    • Operating pressure should ideally be 20% lower than the set pressure to ensure superior seat tightness.
    • A minimum gap of 10% between operating pressure and set pressure is recommended.

    B. System spikes above the allowable safe operating range

    • Pressure exceeding the maximum allowable working pressure hinders proper valve function.
    • Ensuring system pressures stay within the safe range is critical for optimal valve performance.

    C. Improperly supported outlet piping

    • Inadequate support for outlet piping places additional stress on the valve, hindering proper seating.
    • Properly supporting outlet piping is essential to prevent valve malfunction and potential leakage.

    D. Using the wrong valve for the application

    • Sizing and selecting the appropriate valve is crucial for effective functionality.
    • Mismatched valves can lead to operational issues, emphasizing the importance of selecting the right valve for specific applications.

    Recognizing these typical causes sheds light on potential challenges that may undermine the effectiveness of pressure relief valves in preserving the reliability and efficiency of industrial systems.

    Preventive Measures

    A. Maintaining a gap between operating pressure and set pressure

    • Ensure a substantial gap, ideally 20%, between operating pressure and the valve’s set pressure.
    • This practice enhances seat tightness and overall valve performance.

    B. Properly supporting outlet piping

    • Sufficient support for outlet piping is crucial to prevent undue stress on the valve.
    • Proper support ensures the valve functions optimally and minimizes the risk of malfunction.

    C. Sizing and selecting the right valve for the application

    • Accurate valve selection is essential for optimal system performance.
    • Mismatched valves can lead to operational challenges, emphasizing the importance of careful selection.

    D. Regular monitoring and condition assessment of all valves

    • Implement routine checks and assessments to identify potential issues before they escalate.
    • Regular monitoring ensures the longevity and reliability of all valves within the system.

    By adopting these preventive measures, industrial operators can proactively safeguard against pressure relief valve issues, contributing to enhanced system efficiency and prolonged valve lifespan.

    Control station and gas pipe line junction. Pipe , tank and valve.
    control station and gas pipe line junction. pipe , tank and valve.


    At THINKTANK, we emphasize the importance of selecting the right PRV for the application, along with proper installation, regular maintenance, and inspections to ensure reliable valve operation and prevent failures.

    Picture of Will Don

    Will Don

    After earning my bachelor's degree in mechanical engineering from Zhejiang Normal University in 2008, l was fortunate enough to begin my career with Siemens, Fisher, and YTC, focusing on control valve accessories. Over the past dozen years, l've poured my heart and energy into understanding technology and fluid solutions for control valves.
    Now, as the marketing director for THINKTANK, a trusted branch of the Taiwan STONE valve group, I can't help butf eel proud of how far we've come. Our knowledge isn't just reaching professionals like engineer and valve distributors; it's also inspiring the next generation of automation college students.
    l genuinely hope you're enjoying our articles and finding them helpful.Your thoughts, questions, and feedback mean the world to me, so please don't hesitate to reach out to marketing[at] Whether you're a seasoned expert or just curious about the field, I'm here to connect, share, and learn together.

    All Posts »

    I am the author of this article, and also the CEO and marketing director of THINKTANK, with 15 years of experience in the industrial valve industry. If you have any questions, you can contact me at any time.

    The Latest News
    3inch natural gas regulator a216wcb thinktank

    DN80 Natural Gas Regulator Manufactured in 2018

    Yesterday, we received an inquiry for the repair of a natural gas pressure regulator. Upon checking our records, we found that this valve was manufactured ...
    Read More
    training control valve

    Training Sessions on Control Valves

    Hello Everyone, I’m excited to share some news with you all directly from THINKTANK’s official website! Over the past few months, we’ve received a myriad ...
    Read More
    arctic lng 2 liquefaction trains

    Контрольные клапаны THINKTANK в проекте Arctic LNG-2

    В THINKTANK мы гордимся нашим вкладом в проект Arctic LNG-2, что является подтверждением нашей приверженности поставке высококачественных контрольных клапанов и регуляторов. Наше участие подчеркивает нашу ...
    Read More
    control valves

    THINKTANK Control Valves in Arctic LNG-2 Project

    At THINKTANK, we take immense pride in our contribution to the Arctic LNG-2 project, a testament to our commitment to delivering high-quality control valves and ...
    Read More
    dubai seawater desalination project

    Passion Like a Beam of Light

    Passion, like a beam of light,Illuminates every ordinary soulWho strives with earnest toil,Rendering life brilliantly meaningful,With not a moment spent in vain,Defining the essence of ...
    Read More
    dn25 pn16 wcb pcv (1)

    Pneumatic Single-Seat Globe Control Valves PCV DN25 PN16

    Read More
    heat shutdown on off valve

    Valvula shut off com atuador fusível

    A válvula shut-off com atuador fusível é um dispositivo utilizado para controlar automaticamente o fluxo de fluidos em tubulações, especialmente em situações de emergência ou ...
    Read More
    c95500 nickel aluminum bronze control valve factory thinktank

    Engineering Case Studies of C95500 Nickel Aluminum Bronze Control Valves

    In modern industry, the choice of control valves is critical for ensuring the reliability, efficiency, and safety of processes. As a leading manufacturer of C95500 ...
    Read More
    atex ped certificate

    Congratulations to THINKTANK Achieve ATEX and PED Certificates For Fusible Link Safety Valve and Breather Valve Series

    As the co-founder of THINKTANK, it is with a profound sense of pride and humble excitement that I share a milestone that marks a significant ...
    Read More

    Contact Us

    With expertise in valves and rich experience in the oil&gas, chemical industry, textile mills, power plants, and sugar mills. THINKTANK has become the premier manufacturer of next-generation precision control valves.

    With a customer base that includes over 42 of the world’s leading engineering&contractors and international valve brands, THINKTANK Valves offers cost-effective valves that help our customers achieve automated process control without paying high prices.

    Why are more and more international valve brands choosing THINKTANK for OEM service?

    Brand is reputation, which not only requires high valve technology, but also great comercial support and fast response after-sales service and delivery time. They will not gamble their brand on an unknown product

    Get An Instant Quote

    Joy Preview

    Focused on Control Valves & Self-Operated Pressure Regulators For Over 30 Years

    A Good Partner Is A Lasting And Effective Investment

    Get An Instant Quote

    Direct to Control Valve Factory With Competitive Price & Reliable Quality

    Joy Preview
    Joy Preview

    Get An Instant Quote

    Just leave your name, email, and simple message or requirements, We will contact you within 1 hour.

    WhatsApp: +86 185 1656 9221

    Skype ID: sowell85

    Wechat ID: +86 199 2125 0077

    × How can I help you?