Product Description
A Low Pressure Forward Acting Rupture Disc is a non-reclosing pressure relief device specifically designed to protect tanks, vessels, pipelines, and process systems from overpressure conditions at relatively low operating pressures. In a forward-acting design, the process pressure is applied to the concave side of the domed disc. When the system pressure reaches the predetermined burst pressure, the disc ruptures along a precision-scored pattern, providing instantaneous full-bore pressure relief.
Description
Low pressure forward acting rupture discs are commonly constructed as a multi-layer composite assembly consisting of:
- A metallic burst section or laser-scored top section
- A sealing membrane for leak-tight operation
- An optional vacuum or back-pressure support
The burst pressure is controlled through the disc geometry, material thickness, and precision laser scoring, ensuring accurate and repeatable opening performance even at very low pressure settings.
Key Features
- Suitable for very low burst pressures, often from a few millibars upward.
- Fast, instantaneous pressure relief response.
- Non-reclosing, fail-safe operation.
- High leak tightness compared to conventional relief valves.
- Available for gas, liquid, vapor, and two-phase flow applications.
- Corrosion-resistant construction using stainless steel, fluoropolymer, nickel alloys, or specialty materials.
- Optional vacuum supports for systems exposed to vacuum conditions.
- Typical operating ratio up to 80% of the marked burst pressure.
Working Principle
During normal operation, the rupture disc remains intact and seals the process. When pressure exceeds the rated burst pressure, tensile stresses in the disc material exceed its design limit, causing the disc to open along predetermined score lines and rapidly relieve excess pressure. Unlike safety relief valves, rupture discs do not reseal after activation and must be replaced after bursting.
Applications
- Atmospheric and low-pressure storage tanks
- Chemical and petrochemical plants
- Pharmaceutical process equipment
- Pressure vessels and reactors
- Heat exchangers
- Gas handling systems
- Protection of pressure relief valves from corrosive media
Technical Product Description
A Low Pressure Forward Acting Rupture Disc is a precision-engineered pressure relief device designed to provide reliable overpressure protection in low-pressure process systems. The forward-acting domed construction, combined with precision scoring technology, ensures accurate burst performance, rapid opening, excellent leak tightness, and dependable operation in gas, liquid, vapor, and two-phase applications. The disc is suitable for corrosive and non-corrosive service and can be supplied with vacuum support and burst indication options for enhanced process safety.
Exceptional Pressure Relief AccuracyThis forward acting rupture disc is designed to provide reliable and precise pressure relief, maintaining an accuracy of within 5% of the set burst pressure. The low-pressure set-points, ranging from 0.35 bar (5 psi) and above, make it ideal for processes requiring accurate, low-pressure protection with quick response and minimal risk of overpressure damage.
Versatile Compatibility and Corrosion ResistanceCompatible with gases, vapors, and liquids, this rupture disc excels in diverse industrial environments. Its high corrosion resistance-depending on the selected material-and special surface treatments such as polishing or passivation ensure a long service life, protecting your equipment and maintaining safety even in harsh chemical or temperature conditions.
Designed for Safety and Ease of InstallationThe rupture disc adopts a non-fragmenting, leak-tight, and bidirectional sealing design for optimal protection. Flexible installation in both flanged and threaded connections, along with optional accessories like vacuum supports and holders, streamlines setup and supports operational adaptability. Its non-automated, manual-grade operation ensures straightforward pressure safety control.
FAQ's of Low Pressure Forward Acting Rupture Disc:
Q: How is the burst pressure of the Low Pressure Forward Acting Rupture Disc determined?
A: The disc's burst pressure is set with a tolerance of 2 psig or 10% (whichever is greater) and is guaranteed within 5% accuracy of the set pressure, ensuring precise and reliable relief as per application specifications and compliance standards.
Q: What types of media are compatible with this rupture disc?
A: This rupture disc is compatible with gas, vapor, and liquid applications, making it suitable for a wide range of process industries-its corrosion resistance and material options further support broad chemical compatibility.
Q: When should this rupture disc be used in a process?
A: It should be applied in scenarios requiring consistent, low pressure protection, especially where overpressure risks exist-such as in pressure vessels, pipelines, or storage tanks. Its operation up to 80% of minimum burst pressure makes it highly effective for ongoing process safety.
Q: Where can the Low Pressure Rupture Disc be installed?
A: The disc can be installed at critical points within your system, including pipelines, reactor vessels, and pressure relief manifolds. Its design accommodates both flanged and threaded connections, offering flexibility for a range of industrial setups.
Q: What is the process for installing this rupture disc?
A: Installation involves securing the disc between flanges or threading it into place using the designated connection type. It is important to follow the manufacturer's guidelines to preserve disc integrity and prevent leaks; optional holders and vacuum supports can be used for enhanced installation stability.
Q: How does the non-fragmenting design benefit industrial operations?
A: The non-fragmenting design ensures that, upon activation, the disc opens cleanly without generating debris. This prevents downstream equipment damage and product contamination, supporting reliable and safe process operations.
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