NOR CAL High Vacuum Foreline Sieve Trap KF40 TRAPFCT-4-1502-NWB

( Brand: Nor Cal ), ( Manufacturer Part Number: FCT-4-1502-NWB ), ( Part Type: Vacuum Trap ), ( Valve Operation: Foreline Trap )

Review NOR CAL Fct-4-1502-nwb High Vacuum Foreline Metal Sieve Trap

The **NOR FCT-4-1502-NWB NOR-CAL KF40 High Vacuum Foreline Trap/Sieve Trap** is a precision-engineered component designed to enhance the efficiency and reliability of high-vacuum systems, particularly those utilizing cryogenic cooling or cold traps. This robust trap combines advanced thermal management with a specialized sieve design to effectively capture and isolate contaminants, ensuring optimal performance in applications such as mass spectrometry, thin-film deposition, surface science research, and semiconductor manufacturing. Constructed from high-purity stainless steel, the trap is built to withstand the rigorous demands of high-vacuum environments, offering exceptional durability and resistance to corrosion, even when exposed to aggressive chemical vapors or residual gases. The **KF40** flange connection ensures a secure, leak-tight interface with minimal dead volume, allowing for seamless integration into existing vacuum systems while maintaining high vacuum integrity.

At the core of its functionality lies the **sieve trap mechanism**, which features a precisely engineered internal structure designed to maximize surface area for efficient condensation and adsorption of unwanted particles. When paired with a cryogenic cooling source, such as liquid nitrogen or a dedicated cold head, the trap rapidly cools the internal surfaces, enabling it to trap and retain volatile organic compounds (VOCs), hydrocarbons, water vapor, and other gaseous contaminants before they can enter sensitive downstream components. This dual-purpose design acting as both a **foreline trap** and a **sieve trap** eliminates the need for separate trapping stages, streamlining system layout and reducing complexity. The trap s **NWB (non-welded) construction** further simplifies maintenance and servicing, as components can be disassembled and cleaned without the need for specialized welding equipment, thereby extending the operational lifespan of the system.

The **FCT-4-1502-NWB** is particularly well-suited for applications requiring high-purity vacuum conditions, such as electron microscopy, ion implantation, or ultra-high-vacuum (UHV) processes, where even trace amounts of contaminants can compromise results. Its compact yet sturdy design allows for flexible installation in tight spaces, while the **KF40 standard** ensures compatibility with a wide range of vacuum pumps, valves, and other peripherals. Additionally, the trap s efficient thermal conductivity and rapid cooling response minimize the risk of frost buildup or ice formation, which can otherwise obstruct flow and degrade vacuum performance. Whether used in research laboratories, industrial manufacturing, or specialized testing facilities, this trap delivers superior contamination control, prolonging the life of vacuum systems and ensuring consistent, high-quality performance under demanding conditions.

**Pros and Cons of buying a NOR FCT-4-1502-NWB (Foreline Cold Trap) and NOR-CAL KF40 High Vacuum Sieve Trap**

### **NOR FCT-4-1502-NWB (Foreline Cold Trap)**

- **Effective Condensation:** Designed to trap and condense volatile organic compounds (VOCs) and other gases in foreline systems, improving vacuum performance and reducing contamination.

- **Durability:** Made with stainless steel and high-quality materials, ensuring long-term reliability in laboratory environments.

- **Compatibility:** Fits standard KF40 flanges, making it easy to integrate into existing vacuum systems.

- **Reduces Pump Oil Contamination:** Helps prevent backstreaming of pump oil into the vacuum chamber, extending the life of pumps and reducing maintenance.

- **Cost-Effective:** Compared to some high-end alternatives, this trap offers a balance between performance and affordability.

- **Maintenance Requirements:** Requires periodic cleaning or replacement of the cold trap element, which can be time-consuming.

- **Cooling Dependency:** Performance relies on proper cooling (typically with liquid nitrogen or dry ice), adding operational complexity.

- **Limited Flow Rate:** May not be optimal for high-throughput systems where large volumes of gas need to be processed quickly.

- **Potential Leaks:** Improper installation or sealing can lead to leaks, compromising vacuum integrity.

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### **NOR-CAL KF40 High Vacuum Sieve Trap**

- **High Vacuum Compatibility:** Designed for use in ultra-high vacuum (UHV) and high-vacuum applications, ensuring minimal outgassing and contamination.

- **Efficient Particle Trapping:** The sieve design effectively filters out particulate matter, protecting downstream components like pumps and chambers.

- **Durable Construction:** Stainless steel construction ensures resistance to corrosion and prolonged use.

- **Easy Installation:** Standard KF40 flange connection simplifies integration into existing setups.

- **Reduces System Contamination:** Helps maintain clean vacuum environments, which is critical in sensitive applications like semiconductor manufacturing or surface science research.

- **Cost:** More expensive than basic foreline traps, which may be a consideration for budget-sensitive labs.

- **Maintenance Needs:** Requires regular cleaning or replacement of sieve elements to maintain efficiency.

- **Potential Clogging:** If not properly maintained, the sieve can become clogged, reducing flow and requiring frequent servicing.

- **Limited to Specific Applications:** While excellent for high-vacuum systems, it may not be necessary for lower-vacuum applications, making it an unnecessary investment in some cases.

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### **Conclusion**

Both the **NOR FCT-4-1502-NWB foreline cold trap** and the **NOR-CAL KF40 sieve trap** are valuable components for vacuum systems, but their suitability depends on the specific application.

- You need a cost-effective solution for foreline condensation in moderate-vacuum applications.

- Your system requires protection against pump oil backstreaming.

- You are working with volatile compounds that need to be trapped before reaching the pump.

- You operate in ultra-high or high-vacuum environments where particulate contamination is a critical concern.

- Your system demands long-term reliability and minimal outgassing.

- You are willing to invest in a premium component for sensitive applications like semiconductor processing or surface science.

For most **general laboratory or industrial vacuum applications**, the **FCT-4-1502-NWB** may be sufficient. However, if your work involves **high-vacuum or ultra-clean environments**, the **NOR-CAL KF40 sieve trap** is the better choice despite its higher cost.

- **For standard vacuum systems (e.g., chemical synthesis, basic material processing):** Purchase the **NOR FCT-4-1502-NWB** foreline cold trap. It provides excellent value while addressing common contamination issues.

- **For high-vacuum or ultra-clean applications (e.g., thin-film deposition, UHV chambers):** Invest in the **NOR-CAL KF40 sieve trap** to ensure optimal performance and system longevity.

- **If budget allows:** Consider pairing both traps in a system where foreline protection and high-vacuum filtration are required (e.g., a multi-stage vacuum setup). This dual approach maximizes contamination control across different pressure ranges.

Details:

Model: FCT-4-1502-NWB KF40 / NW40 flanges. Contains internal stainless mesh/sieve filter. Used surplus condition. Sold as shown.

Helium leak checked. Nor-Cal Products high vacuum foreline trap / metal sieve. Removed from industrial/lab environment.

part #: fct41502 prices

• $233.99-$899.00

specifications valvesplumbing:

• brand: Nor Cal
• mpn: Fct-4-1502-nwb
• part type: Vacuum Trap
• valve operation: Foreline Trap

seller valvesplumbing:

• rating: 100.0%
• city: Truckee, California
• # reviews: 8

returns valvesplumbing:

• policy: No Returns

shipping valvesplumbing:

• class: Standard
• service: USPS Ground Advantage
• transit: 7-11 Days
• carrier: USPS
• type: Calculated
• cost: $12.13

payments valvesplumbing:

• wallet: Google-pay
• other
• credit card: Mastercard

general valvesplumbing:

• condition: Used
• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds

offer valvesplumbing:

• sold: 0
• quantity: 1
• started: May 7, 2026
• best offers: True
• options: Ship-to-home
• availability: In Stock

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