Siemens Maxum II FPD Column Inlet/Flame Arrester 0.25ID 2020128-702

Overview: Where Column Effluent Meets Detector Safety

The Siemens Maxum II FPD Column Inlet/Flame Arrester, part number 2020128-702, is a combined fitting that both delivers column effluent into the Flame Photometric Detector (FPD) combustion chamber and provides flame-arresting protection at the 0.25-inch inside diameter connection point. Positioned at the critical junction between the separation column and the FPD’s combustion zone, this fitting performs a dual mechanical and safety role that is central to safe, reliable FPD operation on the Siemens Maxum Edition II process gas chromatograph.

As an independent specialized supplier of Siemens Maxum Edition II analyzer spare parts, Seven Star LLC sources and supplies the FPD Column Inlet/Flame Arrester 2020128-702 to refineries, gas plants, and petrochemical complexes across Oman and the wider GCC. Because this fitting sits directly in the FPD’s flame safety path, Seven Star LLC helps maintenance teams keep the correct genuine component in stock for FPD detector servicing.

Working Principle: Combined Flow Delivery and Flame Protection

As column effluent exits the separation column, it must be delivered cleanly into the FPD’s combustion chamber, where sample components are combusted in a hydrogen-rich flame to generate the characteristic sulfur-emission light the detector measures. The 0.25-inch ID column inlet path is sized to maintain proper gas flow and minimize dead volume that could otherwise broaden or distort chromatographic peaks arriving at the detector. Because the FPD is an explosion-proof device with a combustion flame active at the inlet, the integrated flame arrester geometry within this fitting quenches any flashback that might otherwise propagate back up the column inlet path, protecting the upstream oven and column environment from flame intrusion.

This dual-function design reflects the reality that any fitting positioned at a flame-adjacent gas entry point on an explosion-protected detector must satisfy both analytical performance requirements (clean, low-dead-volume flow) and safety requirements (reliable flame quenching) simultaneously, which is why Siemens specifies this fitting as a defined part number rather than leaving it to generic tubing and fitting selection.

Engineering Design of the Column Inlet/Flame Arrester

The 2020128-702 fitting is machined to the 0.25-inch ID dimension specified for the FPD column inlet path, with internal flame-arresting geometry integrated directly into the fitting body rather than requiring a separate in-line arrester component. This integration simplifies the FPD’s inlet plumbing while ensuring the flame-arresting function is positioned precisely where Siemens’ safety design intends it.

Because the FPD is explosion-proof equipment with mandatory safety systems, Siemens documentation is explicit that maintenance work on this detector must follow all instructions and warnings without compromise, and the analyzer must be de-energized and cooled with the flame extinguished before any FPD servicing, including replacement of this column inlet/flame arrester fitting.

Key Features

The FPD Column Inlet/Flame Arrester 2020128-702 combines flow delivery and safety protection in a single fitting. Key characteristics include:

• 0.25-inch ID column inlet path sized for clean, low-dead-volume delivery of column effluent to the FPD.
• Integrated flame-arresting geometry protecting the upstream oven and column environment from flashback.
• Combines two functions – flow delivery and flame safety – in a single defined Siemens part.
• Precision-machined to maintain both chromatographic peak integrity and detector safety certification.
• Genuine Siemens Maxum II part number for correct fit and safety compliance.

Industrial Applications

This fitting is used wherever a Maxum Edition II analyzer is configured with a Flame Photometric Detector for sulfur-selective analysis, including natural gas sulfur specification testing, refinery sulfur recovery unit monitoring, and petrochemical process streams sensitive to trace sulfur content. Given its dual role in analytical performance and detector safety, it is typically replaced as part of scheduled FPD maintenance and safety inspection intervals.

Seven Star LLC supports refinery instrumentation teams, gas processing operators, and petrochemical maintenance departments across Oman, Muscat, Sohar, and the broader GCC region with sourcing of this and other Maxum Edition II FPD hardware, helping analyzer houses maintain both measurement continuity and process safety compliance.

Technical Specifications

The table below summarizes the core specifications of the Siemens Maxum II FPD Column Inlet/Flame Arrester as supplied by Seven Star LLC.

Call To Action

Seven Star LLC is a dedicated supplier of Siemens Maxum Edition II process gas chromatograph spare parts and FPD detector hardware throughout Oman and the GCC. To request a formal B2B quotation, verify current stock availability, or confirm compatibility of the FPD Column Inlet/Flame Arrester 2020128-702 with your specific Maxum II configuration, contact our instrumentation sourcing team today.