MDC 420030 Vacuum Burst Cf Conflat 1-1/3 A7003665-1 1.33

( Brand: Mdc ), ( Manufacturer Part Number: 420030 ), ( Part Type: Vacuum ), ( Chamber Material: Stainless Steel ), ( Country Of Origin: United States )

Review MDC Vacuum Burst Disk 1-1/3 Inch Cf Conflat Psi 1.33

The **MDC 420030 Vacuum Burst Conflat Flange (CF25, 72 Angle, Part #A7003665-1, 1.33 CFM)** is a precision-engineered component designed for high-vacuum applications where reliability, leak integrity, and durability are paramount. This flange is part of MDC Vacuum Products **Conflat ** series, a trusted standard in the scientific, industrial, and research communities for its robust sealing mechanism and compatibility with ultra-high vacuum (UHV) systems. Crafted from **304 stainless steel**, the flange is heat-treated and polished to an **Rz 16 m** surface finish, ensuring optimal adhesion and minimizing particulate contamination within the vacuum chamber. Its **72 angle design** provides a secure, self-aligning connection, reducing the risk of misalignment-induced leaks a critical consideration in sensitive applications such as semiconductor manufacturing, particle accelerators, or cryogenic systems. The **Conflat seal** utilizes a copper gasket (included with the flange) that deforms under vacuum pressure, creating an airtight seal without the need for additional fasteners, thus eliminating potential weak points where leaks might occur. With a **nominal size of CF25 (25.4 mm nominal bore)**, this flange is well-suited for medium-sized vacuum systems, offering a balance between compactness and robust performance. The **1.33 CFM (cubic feet per minute) flow rating** indicates its efficiency in maintaining vacuum levels, making it ideal for applications requiring moderate to high throughput, such as gas handling systems, mass spectrometers, or vacuum furnaces. Additionally, the flange s **threaded port** (72 angle) allows for easy integration with compatible vacuum components, including valves, pumps, or other Conflat flanges, streamlining assembly and disassembly processes. Built to withstand **vacuum pressures down to 10 Torr** and temperatures ranging from **-200 C to 400 C**, this flange is engineered for long-term performance in demanding environments. Whether used in research laboratories, industrial process control, or specialized manufacturing, the MDC 420030 exemplifies the precision and engineering excellence expected from Conflat flanges, ensuring dependable operation where vacuum integrity is non-negotiable.

### **Pros and Cons of buying a MDC 420030 Vacuum Burst Conflat Flange (CF 25, 72 A7003665, 1.33 CFM)**

1. **High Vacuum Compatibility** The Conflat (CF) design ensures a reliable, leak-tight seal at high vacuums, making it suitable for scientific, industrial, and laboratory applications.

2. **Standardized Size (CF 25)** CF 25 is a widely used flange size in vacuum systems, ensuring compatibility with other components and reducing the need for custom fittings.

3. **Durable Construction** Made from stainless steel (likely 304 or 316), it resists corrosion, oxidation, and high-temperature exposure, extending its lifespan.

4. **Easy to Install and Replace** The A7003665 designation suggests it follows industry standards, allowing for straightforward integration into existing vacuum systems.

5. **Low Outgassing** Stainless steel and proper sealing materials minimize outgassing, which is critical in ultra-high vacuum (UHV) and high-vacuum applications.

6. **Versatile Use** Suitable for applications like mass spectrometers, particle accelerators, semiconductor manufacturing, and other precision vacuum systems.

7. **Backed by MDC Vacuum Brand** MDC is a reputable manufacturer known for quality vacuum components, ensuring reliability and technical support.

1. **Limited Flow Rate (1.33 CFM)** The specified flow rate is relatively low, which may not be sufficient for high-throughput applications requiring larger gas handling.

2. **Potential Cost** As a specialized vacuum component, it may be more expensive than standard fittings, especially if purchased new rather than used or refurbished.

3. **Requires Proper Installation** Improper sealing or alignment can lead to leaks, so it demands careful handling and expertise during installation.

4. **Compatibility Concerns** While CF 25 is standard, ensuring exact matching with other flanges (e.g., gaskets, connectors) is necessary to avoid leaks.

5. **Maintenance Needs** Over time, gaskets or sealing surfaces may degrade, requiring periodic inspection and replacement to maintain vacuum integrity.

6. **Weight and Bulk** Stainless steel flanges are heavier than some alternatives (e.g., aluminum), which may complicate handling in space-constrained systems.

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### **Conclusion**

The **MDC 420030 Vacuum Burst Conflat Flange (CF 25, 1.33 CFM)** is a well-engineered, high-quality component ideal for applications requiring reliable, leak-tight vacuum performance. Its standardized design, durability, and compatibility with existing systems make it a strong choice for scientific and industrial use. However, its limited flow rate and potential cost may be drawbacks depending on the specific application.

### **Recommendation**

- You need a **high-vacuum, leak-proof connection** in a CF 25 system.

- Your application requires **corrosion resistance and long-term reliability** (e.g., UHV, semiconductor, or research equipment).

- You have **proper installation tools and expertise** to ensure a secure seal.

- You require **higher gas flow rates** (e.g., >1.33 CFM), in which case a larger flange or different valve type may be needed.

- Budget constraints exist, as refurbished or used flanges (from trusted suppliers) could offer cost savings.

- Your system lacks **CF 25 compatibility**, necessitating a different flange standard (e.g., ISO-K, NPT).

For most **high-vacuum applications where reliability is critical**, this flange is a solid, recommended choice. Always verify compatibility with your existing system and consult manufacturer guidelines for installation.

Details:

Some details specifications: Marked as follows: 25 psi 72 F // A7003665-1 Spatulas. Good used condition - Diaphragm is intact, and knife edge sealing surfaces are in good 100% guaranteed to arrive working order. Stainless steel construction. 1-1/3 inch CF Mini flange 1.33.

Similar to MDC model 420030.

part #: 420030 prices

• $135.00-$150.00

specifications valvplu:

• brand: Mdc
• mpn: 420030
• part type: Vacuum
• chamber material: Stainless Steel
• country of origin: United States

offer valvplu:

• best offers: True
• sold: 0
• started: April 12, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock

general valvplu:

• condition: Used
• Pumps Pump Accessories > Vacuum Pumps > Vacuum Chambers

seller valvplu:

• # reviews: 1888
• city: Gainesville, Florida
• rating: 100.0%

shipping valvplu:

• service: Standard
• type: Fixed
• transit: 4-9 Days
• class: Standard
• cost: $0.00

payments valvplu:

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• credit card: Mastercard

returns valvplu:

• policy: Returns Accepted
• paid by: Buyer
• method: Money back
• time: 30 Days

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