Frequently Asked Questions
General & Application
What types of polymers can your filter systems handle?
Our systems are designed for a wide range of polymers including PET, PBT, Nylon (PA6, PA66), Polypropylene (PP), Polycarbonate (PC), and high-viscosity engineering plastics.
What is the maximum operating viscosity your system supports?
We offer customized solutions capable of handling viscosities ranging from low-viscosity monomers up to 50,000+ cP for high-melt-strength applications.
Can your system operate continuously without production shutdowns?
Yes. Our LAF design allows for 100% continuous operation; one filter set while the other is cleaned or changed over without interrupting the process line.
What filtration fineness (micron rating) do you offer?
We provide filter elements ranging from 5 µm to 100 µm, with specialized options for gel removal and sub-micron absolute ratings depending on your product quality requirements.
Do you offer both batch and continuous filtration solutions?
Yes. We supply inline systems for batch processing as well as fully automated systems for continuous polymerization and extrusion lines.
What are the typical throughput capacities?
Our modular systems scale from pilot plant capacities (<100 kg/h) to mid-large-scale production lines exceeding 6,000 kg/h.
Can the system handle recycled or post-consumer polymer (PCR) directly?
Based on the contamination level and particle size our heavy-duty candle filter model may be able to handle PCR melt but process should be consulted first. Consult your process here.
Is your system suitable for high-temperature applications?
Yes. Our housings and internals are rated for temperatures up to 310°C (590°F), suitable for high-temperature polymer melts.
Technical Design & Components
What type of filter media do you use?
We utilize sintered metal fiber (non-woven), sintered mesh plates, and pleated wire mesh candles, selected based on dirt-holding capacity and differential pressure requirements.
What is the difference between candle filters and flat screen filters?
Candle filters offer a larger surface area for high-throughput, low-differential pressure applications, while flat screen filters are compact and ideal for space-constrained installations or fast and frequent filter recplacement tasks.
Do your systems include automatic backflushing capabilities?
Not for now. But FLUX is allocating a significant share of its resources to R&D, and within the backflush filter segment the company is pursuing advanced technology initiatives. These initiatives form part of a five‑year development roadmap that extends well beyond conventional backflush filter capabilities.
What type of switch-over valves are used?
We use patented and unique (rheologically optimized) valves designed for shortest residence time, smoothest flow path and free from dead spots and ensure seamless, leak-free transfer between filter sets.
How do you minimize residence time and degradation?
FLUX places a stronger emphasis on technological advancement than any other company in its field. Our advanced CFD infrastructure and team of BSc, MSc and PhD level fluid and polymer engineers enable precise flow‑path optimization, elimination of dead zones, and reduced thermal degradation in heat‑sensitive polymers.
What materials of construction are available?
Standard construction is nitride steel, stainless steel, with options for Hastelloy, Inconel, and specialized coatings for corrosive monomers or high-chloride environments.
Are your pressure items code-compliant?
Yes. All filter barrels are designed and stamped according to ASME Section VIII, PED (2014/68/EU), and other relevant regional pressure codes.
How is the system heated?
FLUX provides integrated electric heating cage and a fully monolithic oil‑jacketed heating design to ensure precise and uniform temperature control across the entire filter housing and valve block. Unlike conventional systems that circulate oil through isolated channels, our monolithic oil jacket places the thermal medium in direct contact with all heating surfaces, delivering superior temperature homogeneity and improved process stability.
Do I need an external oil heater?
No. FLUX integrates both the electric heating system and the oil reservoir into a single monolithic body. This eliminates the need for any external oil supply, circulation, or transfer equipment. Our design operates with a remarkably low oil volume, supporting sustainability goals while maintaining superior thermal performance. FLUX uses 44% less chemical fluid compared to equivalent competing systems, reducing both environmental impact and operating costs.
What time is needed for start-up heating?
Thanks to its additional booster‑heater elements, FLUX delivers the fastest heat‑up performance in the entire segment, ensuring rapid start‑up, reduced downtime, and superior thermal responsiveness. That variates between 1.5-6hrs based on system size.
Do I need to cover FLUX with heat insulation?
No. FLUX compact desing includes 360° all‑round insulation.
What do I need additionally to install FLUX into our polymer line?
You need to connect polymer inlet/outlet and power supply. Additionally you need proper size vertical lifting equipment. However in case of your need we can offer you our service for installation, supervision, start-up, and performance optimization. For your installation request please fill our contact form, our aftersales team will contact you in 48 hours.
What is the size of FLUX?
Size differs depends on your process requirements, and we invite you to benefit from our free consultation service here. Regardless of configuration, FLUX’s compact design architecture consistently delivers the smallest footprint, lowest weight, and minimal chemical consumption in its class.
What differentiates FLUX from other candle filters?
FLUX stands apart through a combination of engineering depth and genuine innovation. Plug-in start-up, modular inlet/outlet connection architecture, unique valve design, CFD proofed ultra‑short flow path free from dead zones, monolithic oil‑heating system, unmatched thermal uniformity and efficiency, fastest heat‑up performance in the segment, highly effective filtering item, exceptionally compact design—resulting in the smallest footprint, lowest weight, and minimal chemical consumption in its class. With 360° all‑round insulation and numerous operational conveniences, FLUX sets a performance benchmark far beyond conventional candle filter systems.
Operations & Maintenance
Is the system delivered with heating oil?
No. The FLUX LAF System is shipped without any chemical fluids. The heating oil must be supplied and filled by the user in accordance with the instructions provided in the user manual.
How long do filter elements typically last?
Element lifetime depends on several process parameters, including contamination load, contaminant type, particle size distribution, filtration fineness, filter‑layer structure, and the available filtration area.
How quickly can I switch over from one filter set to the other?
Valve switch‑over time depends on the system size and the required ventilation period. Please note that ventilation refers to filling an empty filter set with polymer, and its duration is directly related to the internal volume that must be filled. In practice, manual systems can be switched over in under five minutes, while automated systems achieve significantly shorter times.
Is special training required to operate the system?
Our systems feature intuitive HMI controls and automated sequences. We provide comprehensive on-site commissioning and operator training as part of the installation.
How do I know when to change the filter elements?
The system monitors differential pressure (ΔP) in real-time and triggers automatic alerts or switch-overs the valves when the preset limit is reached.
How do i extract the filter set from the body?
A properly sized lifting or crane system is required for safe extraction. Thanks to several advanced design features, the filter set can be released and removed with exceptional ease, ensuring a smooth and efficient handling process.
Can I clean and reuse the filter elements?
Depending on the media type, our sintered or wire mesh metal elements can be cleaned via different cleaning processes such as hydrolysis, pyrolysis, pressurized washing, ultrasonic baths, TGA or fluidized bed ovens and reused multiple times, lowering OPEX.
How difficult to remove replaceable parts?
Our design engineers prioritize operational simplicity above all else. Thanks to the modular architecture, all replaceable components are positioned behind easily removable access covers, ensuring fast, safe, and efficient maintenance..
What kind of spare parts do you recommend stocking?
We recommend keeping a set of seal kits, one full set of filter elements, critical valve elements, heaters and pressure/temperature sensors on site to minimize unplanned downtime.
Do you offer remote monitoring or IIoT connectivity?
Yes. Our control systems can be integrated into your plant DCS/SCADA via OPC-UA, Modbus, or Ethernet/IP for remote diagnostics and predictive maintenance.
Does your control system support recipe calls from a library?
Yes. Our control system includes an advanced recipe‑management module equipped with multiple high‑technology features designed to streamline and simplify your process operations.
Commercial & Support
Do you provide custom-engineered solutions?
Yes. Every system is made-to-order based on your specific polymer rheology, throughput, footprint, and filtration goals.
What is the typical lead time for a new system?
Standard LAF systems typically ship within 12–16 weeks; complex, highly customized units may require 20–24 weeks.
Do you offer global installation and commissioning support?
Yes. Our field service engineers are available worldwide for installation supervision, start-up, and performance optimization. For your supervision request please fill our contact form, our aftersales team will contact you in 48 hours.
What warranty do you offer?
We provide a standard 12-month warranty on materials and workmanship, with extended warranty and service contracts available.
How does your system help reduce waste and improve sustainability?
By extending element life, enabling element cleaning, and reducing off-spec product during change-overs, our systems significantly lower solid waste and energy consumption.
How do I request a quote or technical consultation?
Simply fill the quote request form here with your process data (viscosity, throughput, temperature) or reach our sales team; we typically provide a preliminary layout and budgetary quote within 48 hours.
Revision: 12 December 2025