Rupture Disc Reverse Dome Buckling Knife Type – High-Reliability Safety Rupture Disc

The Rupture Disc Reverse Dome Buckling Knife Type is a non-mechanical safety device designed to protect pressure systems from overpressure exceeding the specified pressure limit.

The product features a Reverse Dome Buckling Knife Type design and is installed and used with an FDC Standard Holder. It consists of a Control Disc and a Seal Disc, combined with a shear-actuated knife mechanism.

When the pressure in the system reaches the specified Set Pressure, the dome of the Rupture Disc inverts. This movement activates the knife-shaped structure of the Control Disc, causing the rupture disc to shear and open a pressure relief path.

With its wide media compatibility, maximum operating ratio of 90%, maximum temperature of 593°C, external impact resistance, precise rupture performance, and excellent reliability, the Reverse Dome Buckling Knife Type is suitable for a wide range of industrial overpressure protection applications.

What Is a Reverse Dome Buckling Knife Type Rupture Disc?

A Rupture Disc, also known as a Safety Rupture Disc, Bursting Disc, or Pressure Relief Disc, is a non-mechanical pressure safety device designed to protect pressure vessels, piping systems, and process equipment from excessive pressure.

Unlike mechanical pressure relief devices that use moving components, a Rupture Disc is manufactured with a predetermined rupture characteristic. When the system pressure reaches the specified Set Pressure, the disc ruptures and creates an opening to release excess pressure.

The Reverse Dome Buckling Knife Type uses a reverse dome structure combined with a knife-actuated shear mechanism to provide controlled rupture performance.

The product is designed to provide:

• High safety.

• Excellent reliability.

• Strong corrosion resistance.

• External impact resistance.

• Easy handling.

• Performance under back pressure.

• Performance under vacuum conditions.

• Performance under pressure pulsation.

• Wide operating temperature capability.

Reverse Dome Buckling Knife Type Design

The product features a:

Reverse Dome Buckling Knife Type

design.

The Rupture Disc is installed and used in an FDC Standard Holder.

The main components include:

• Control Disc

• Seal Disc

• Knife Structure

The Control Disc and Seal Disc work together to form the pressure protection assembly.

When the pressure acting on the Rupture Disc reaches the activation condition, the dome of the disc inverts or buckles. This reverse movement activates the knife-shaped structure of the Control Disc.

Knife-Activated Shear Mechanism

The knife-actuated shear mechanism is one of the key characteristics of this Rupture Disc design.

When the dome of the Rupture Disc inverts:

Reverse Dome → Buckling/Inversion → Knife Activation → Shearing → Rupture → Pressure Release

The knife-shaped Control Disc acts on the rupture structure and creates a shear-actuated rupture.

This mechanism allows the Rupture Disc to open according to its predetermined design when the system reaches the specified Set Pressure.

The combination of:

Control Disc + Seal Disc + Knife Structure

provides a controlled and reliable rupture mechanism.

Installation with FDC Standard Holder

The Reverse Dome Buckling Knife Type is designed to be:

Installed and Used in an FDC Standard Holder

The FDC Standard Holder securely positions the Rupture Disc within the pressure system and helps maintain the intended configuration of the Control Disc and Seal Disc.

Using the appropriate holder provides practical benefits such as:

• Accurate Rupture Disc positioning.

• Convenient installation.

• Easy replacement.

• Proper positioning of the Control Disc and Seal Disc.

• Support for the designed rupture mechanism.

The holder should be selected according to the Rupture Disc size, Set Pressure, connection standard, and operating conditions.

Key Features of Reverse Dome Buckling Knife Type Rupture Disc

1. Suitable for Various Process Media

One of the major advantages of the product is its compatibility with a wide range of industrial process media, including:

• Liquid

• Gas

• Steam

• Vapor

• Sludge

• Resin

This broad media compatibility makes the product suitable for consideration in various industrial systems, from liquid piping systems to gas, steam, vapor, sludge, and resin processing applications.

2. High Safety and Strong Corrosion Resistance

The Rupture Disc is designed to provide reliable overpressure protection while offering strong corrosion resistance.

Available material options include:

• Stainless Steel

• Hastelloy

• Monel

• Nickel

• Titanium

• Tantalum

• Duplex

• Special Alloy

• Aluminum

• Other materials available upon request.

Material selection should be based on the process medium, operating temperature, operating pressure, and corrosive characteristics of the operating environment.

3. Excellent Performance under Back Pressure, Vacuum, and Pulsation

The Reverse Dome Buckling Knife Type provides advantages in systems exposed to:

• Back Pressure

• Vacuum

• Pressure Pulsation

The product specification is:

Vacuum Support Required: No

No separate vacuum support is required according to the supplied product specifications.

4. Wide Operating Temperature Range

The maximum temperature rating of the product is:

593°C

This high-temperature capability makes the Rupture Disc suitable for consideration in various industrial applications involving:

• Steam.

• Vapor.

• Hot gas.

• Thermal processes.

• Chemical processes.

• High-temperature process equipment.

5. Maximum Operating Ratio up to 90%

The product provides a:

Maximum Operating Ratio: 90%

A high operating ratio allows the operating pressure to be maintained relatively close to the specified Set Pressure within appropriate design conditions.

Actual product selection should consider the relationship between operating pressure, Set Pressure, temperature, process medium, and dynamic pressure conditions.

6. Resistant to External Impact

The Reverse Dome Buckling Knife Type is designed to be:

Resistant to External Impact

This characteristic provides additional convenience during handling, transportation, and installation.

It can be beneficial for industrial applications where Rupture Disc handling and replacement are important operational considerations.

7. Easy Handling

The product is designed to facilitate:

• Handling.

• Installation.

• Replacement.

• Maintenance.

The use of an FDC Standard Holder also supports convenient installation and replacement of the Rupture Disc.

8. Precise Rupture Performance and Excellent Reliability

The Knife-Activated Shear mechanism, combined with the Control Disc and Seal Disc, is designed to provide controlled rupture performance.

The product features:

Precise Rupture Performance & Excellent Reliability

These characteristics are particularly important in industrial systems where reliable overpressure protection is a critical safety requirement.

9. Patented Product

The Reverse Dome Buckling Knife Type is a:

Patented Product

The design incorporates a knife-actuated rupture mechanism activated when the dome of the Rupture Disc inverts.

Technical Specifications

Set Pressure and Available Sizes

The Reverse Dome Buckling Knife Type is available with a:

Set Pressure range: 0.1–100 kg/cm²

Available sizes:

1/2"–36" (15A–900A)

This wide range of pressure settings and sizes allows the product to be considered for various industrial equipment and piping systems.

When selecting the appropriate Rupture Disc, the following parameters should be determined accurately:

1. Set Pressure

2. Operating Pressure

3. Design Pressure

4. Operating Temperature

5. Process Medium

6. Required Relief Capacity

7. Pipe/Equipment Size

8. Connection/Flange Standard

9. Back Pressure

10. Vacuum Conditions

11. Pressure Pulsation

12. Material

13. Holder Type

Other specifications are available upon request.

Available Process Media

The Reverse Dome Buckling Knife Type is designed for use with a wide range of process media.

Liquid

Suitable for industrial liquid systems requiring reliable overpressure protection.

Gas

Suitable for industrial gas systems, gas processing equipment, and gas piping systems.

Steam

Can be considered for suitable steam systems within the specified pressure and temperature limits.

Vapor

Suitable for vapor and process vapor applications, including high-temperature process systems.

Sludge

The ability to handle sludge expands the potential application range to systems involving fluids containing solids or higher-viscosity materials.

Resin

Can be considered for resin processing systems and applications involving specialized process media.

Industrial Applications

Oil & Gas Industry

The Reverse Dome Buckling Knife Type can be considered for:

• Gas processing systems.

• Pressure vessels.

• Piping systems.

• Process equipment.

• Storage equipment.

Chemical Industry

The availability of corrosion-resistant materials makes the product suitable for consideration in various chemical processing environments.

Petrochemical Industry

Suitable for consideration in process systems and petrochemical equipment requiring reliable overpressure protection.

Steam & Boiler Systems

Suitable for consideration in steam, boiler, and thermal process systems within the specified design conditions.

Pressure Vessels

The Rupture Disc can be used to protect pressure vessels from pressure exceeding the allowable limit.

Industrial Piping Systems

The product can be used in piping systems transporting:

• Liquid.

• Gas.

• Steam.

• Vapor.

• Sludge.

• Resin.

where overpressure protection is required.

Advantages of Reverse Dome Buckling Knife Type

The main advantages of the product include:

Wide Media Compatibility → High Safety → Strong Corrosion Resistance → Back Pressure Performance → Vacuum Performance → Pulsation Performance → No Vacuum Support → Temperature up to 593°C → Operating Ratio up to 90% → External Impact Resistance → Easy Handling → Precise Rupture Performance → Excellent Reliability → Patented Design.

In particular, the combination of:

Control Disc + Seal Disc + Knife Structure

with the Reverse Dome Buckling Mechanism creates the distinctive knife-actuated shear rupture mechanism of this product.

How to Select the Right Rupture Disc

To select the correct Reverse Dome Buckling Knife Type for your pressure system, the following information should be provided:

• Process Medium

• Set Pressure

• Operating Pressure

• Design Pressure

• Operating Temperature

• Required Relief Capacity

• Pipe/Equipment Size

• Flange/Connection Standard

• Back Pressure

• Vacuum Conditions

• Pressure Pulsation

• Material Requirements

• FDC Standard Holder Configuration

Providing complete system information helps ensure that the selected Rupture Disc is properly matched to the actual operating conditions.

Buy Reverse Dome Buckling Knife Type Rupture Disc in Vietnam

The Rupture Disc Reverse Dome Buckling Knife Type is an overpressure protection solution featuring a Reverse Dome Buckling Knife design, Control Disc + Seal Disc construction, and a Knife-Activated Shear mechanism.

Key specifications include:

• Set Pressure: 0.1–100 kg/cm²

• Size: 1/2"–36" (15A–900A)

• Maximum Temperature: 593°C

• Maximum Operating Ratio: 90%

• Vacuum Support Required: No

• Gas/Vapor Service: Yes

• Liquid Service: Yes

• Suitable for Liquid, Gas, Steam, Vapor, Sludge, and Resin

• Precise Rupture Performance

• Excellent Reliability

• External Impact Resistance

• Patented Product

The product is suitable for consideration in applications including Oil & Gas, Chemical, Petrochemical, Steam Systems, Boiler Systems, Pressure Vessels, Process Equipment, and Industrial Piping Systems.

TheGioiVan.net provides Rupture Disc, Safety Rupture Disc, Bursting Disc, and industrial overpressure protection solutions for a wide range of industrial applications.

For proper product selection, please provide the Process Medium, Set Pressure, Operating Pressure, Operating Temperature, pipe/equipment size, Back Pressure, and connection standard.

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