Brand: Siemens

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

Name: Siemens Maxum II FPD Column Inlet Arrester 2020128-702
Brand: Siemens

Description

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.

Parameter	Specification
Model / Part Number	Column Inlet/Flame Arrester, FPD, 0.25 ID, P/N 2020128-702
Function	Column effluent delivery and integrated flame arresting
Inside Diameter	0.25 inch
Compatible Detector	Flame Photometric Detector (FPD)
Target Platform	Siemens Maxum Edition II Process Gas Chromatograph
Safety Note	FPD is an explosion-proof device; safety systems must not be compromised during service
Hardware Condition	New, genuine Siemens part number

Why Choose Seven Star LLC for FPD Flame-Path Hardware Sourcing

A fitting that sits directly in an explosion-proof detector’s flame path is not a place to improvise with generic tubing and fittings – the 0.25-inch ID and integrated flame-arresting geometry are both precisely specified by Siemens, and a substitute part that gets either dimension wrong risks either degraded chromatographic peak shape or a compromised flame-arresting function. Seven Star LLC verifies the exact inside diameter and safety specification against the customer’s FPD configuration before this part ships, and flags Siemens’ explicit safety requirement that the analyzer be de-energized and the flame extinguished before any FPD servicing. We also help refinery and gas plant instrumentation teams across Oman plan this fitting into scheduled FPD maintenance and safety inspection intervals, and coordinate delivery across Muscat, Sohar, and the broader GCC around those planned service windows.

Request a Quote for Siemens Maxum II FPD Column Inlet/Flame Arrester 0.25ID 2020128-702

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 availability and lead time, or confirm compatibility of the FPD Column Inlet/Flame Arrester 2020128-702 with your specific Maxum II configuration, contact our instrumentation sourcing team today.

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About brand

Most Siemens automation parts are bought by article number, the string beginning 6ES7, 6AV2 or 6GK5 printed on every module. Founded in 1847 and headquartered in Munich, Siemens builds the SIMATIC controllers, SCALANCE networks and SINAMICS drives that plant engineers meet on almost every site. Seven Star LLC, an independent supplier, lists Siemens PLC and I/O modules, HMI panels, industrial Ethernet switches, drives, protection relays, temperature transmitters and gas analyzer spare parts for projects in Oman and the GCC.

Siemens product families on this page

Controller hardware covers the SIMATIC S7-1200 (CPU 1214C with SM 1223 signal modules) and the S7-1500 (CPU 1515-2 PN), with ET 200SP and ET 200M distributed I/O and their IM 155-6 and IM 153-2 interface modules. Operator panels include the KTP700 Basic and TP700 Comfort. SCALANCE XC208 managed switches handle industrial Ethernet. Drives are represented by the SINAMICS G120C compact inverter and the G120X for pumps and fans. From the power side come the SIPROTEC 7SJ85 feeder protection relay and SIVACON S8 switchboards, and from process instrumentation the SITRANS TH320 head-mounted temperature transmitter.

Where Siemens equipment is used

SIMATIC controllers and ET 200 I/O run packaged units, skids and whole process lines in water treatment, oil and gas, cement, food and manufacturing plants. SINAMICS drives control pumps, fans and conveyors, SCALANCE switches form the control network, and SIPROTEC relays protect medium voltage feeders and motors.

Ordering Siemens parts: what we need

Send the complete article number, the functional status or version printed on the module and, for CPUs, the firmware version your project was written for. For drives add power, supply voltage, filter option and fieldbus version. For SIPROTEC relays the long order number or product code is required, because it fixes the hardware and function package. A nameplate photo answers most of these points at once.

Frequently Asked Questions

What two functions does this fitting combine?

It delivers column effluent into the FPD combustion chamber through a 0.25-inch ID path while also providing integrated flame-arresting protection at that same connection point.

Why is a flame arrester needed at the column inlet?

Because the FPD combusts sample components in a hydrogen-rich flame, the integrated arrester quenches any flashback before it can propagate back up the column inlet path into the oven and column environment.

Why is the inside diameter specified at 0.25 inch?

The 0.25-inch ID is sized to maintain proper gas flow and minimize dead volume that could otherwise broaden or distort chromatographic peaks arriving at the detector.

What precautions apply when replacing this fitting?

Because the FPD is explosion-proof equipment, the analyzer must be de-energized and cooled with the flame extinguished before any servicing, following Siemens' documented FPD maintenance procedure.

Does Seven Star LLC supply this part across the GCC?

Yes, Seven Star LLC sources and supplies the Siemens Maxum II FPD Column Inlet/Flame Arrester 2020128-702 to refinery, gas processing, and petrochemical customers across Oman and the wider GCC region.

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