Magnetic filter with manual or semi-automatic cleaning (FM)

In brief

• The magnetic filter with manual or semi-automatic cleaning (FM) treats liquid or pasty products that flow through magnetic bars inside a magnetic housing.
• It is used in food processing, the chemical and pharmaceutical industries, oil and lubricant treatment, and ceramic and enamel production.
• It has removable flanges, withstands high pressures, is CIP/SIP compatible and is available with neodymium or samarium-cobalt bars.

food processing, permanent magnet, separation

• Applications
• Operating principles
• Recommendations for use
• General specifications
• Case studies

Applications

The FM magnetic filter is used in several sectors:

• Food processing industry: removal of ferrous contaminants from jams, purées, sauces, liquid chocolate and dairy products.
• Chemical and pharmaceutical industry: purification of liquid solutions, suspensions and emulsified powders.
• Oil and lubricant treatment: separation of metal particles from cutting oils and industrial fluids.
• Ceramic and enamel production: removal of iron particles from liquid ceramic slips.

Operating principles

Operating principle of our FM magnetic filters:

• The contaminated liquid or pasty product enters the magnetic housing and flows through a set of high-intensity magnetic bars.
• Attraction of ferrous particles: contaminants are captured on the magnetic tubes.
• Discharge of the purified product: the filtered liquid exits free of metal impurities.
• Manual version: contaminants are removed by simply sliding them off the magnetic tubes.
• Semi-automatic version: withdrawing the magnetic cores allows the captured particles to be discharged automatically.

Recommendations for use

Advice from our Lenoir-Mec experts:

• Check the position of the magnetic filter to optimise contaminant retention
• Schedule regular cleaning to maintain optimal efficiency
• Choose the right type of magnetic bars: neodymium for maximum strength, samarium-cobalt for high temperatures
• Combine the magnetic filter with a metal detector for complete process protection

General specifications

Specifications of Lenoir-Mec FM magnetic filters:

• Removable flanges for easy integration into pipelines.
• Withstands high pressures and compatible with CIP/SIP cleaning.
• Stainless steel construction compliant with food and pharmaceutical industry standards.
• High-performance magnets: neodymium bars (up to 12 000 Gauss) or samarium-cobalt bars (resistant up to 300°C).
• Available options: double-wall version for products sensitive to temperature variations.

Advantages

• High filtration efficiency
• Easy, adaptable installation
• Easy maintenance: quick and simple cleaning

Services

• Industrial commissioning assistance
• Spare parts stock
• Fast after-sales service response
• Installed base monitoring and periodic performance checks

Frequently asked questions

How does the FM magnetic filter work?

The liquid or pasty product enters the magnetic housing and flows through a set of high-intensity magnetic bars, which capture the ferrous particles. The purified product exits free of metal impurities.

What is the difference between the manual and semi-automatic versions of the FM?

In the manual version, contaminants are removed by simply sliding them off the magnetic tubes. In the semi-automatic version, withdrawing the magnetic cores allows the captured particles to be discharged automatically.

What types of magnets are available for the FM filter?

The bars are made of neodymium, up to 12 000 Gauss, for maximum strength, or samarium-cobalt, resistant up to 300 °C, for high temperatures.

Is the FM filter suitable for food processing and pharmaceuticals?

Yes, its stainless steel construction complies with food and pharmaceutical industry standards, and it is compatible with CIP/SIP cleaning. For example, it removes ferrous contaminants from jams, purées, sauces, liquid chocolate and dairy products.

How is the FM filter integrated into an installation?

It has removable flanges for easy integration into pipelines and withstands high pressures. A double-wall version is available as an option for products sensitive to temperature variations.

Technical data

Dimensions in mm

Model	DN	A1/A2	H1/H2	L	Number of bars	Cleaning type	Operating pressure	Weight (kg)	Flow rate, fluid (l/s)	Flow rate, medium (l/s)	Flow rate, paste (l/s)
FM 5P	50/65	154/206	300/330	350	5	Semi-auto	5	30	4 à 8	3 à 7	2 à 5
FM 6P	80	160/206	350/380	350	6	Semi-auto	5	40	8 à 10	7 à 8	5 à 7
FM 7P	100/125	180/216	350/380	350	7	Semi-auto	5	60	10 à 45	8 à 27	7 à 18
FM 9P	150/200	240/290	450/480	480	9	Manuel	5	80	45 à 80	27 à 49	18 à 33
FM 11P	250				11	Manuel	5	140	80 à 120	49 à 74	33 à 49
FM 15P	300				15	Manuel	5	210	120 à 140	74 à 85	49 à 57