Sinterflo® Sintered

Stainless Steel Filter Elements

Porvair Filtration Group manufacture a range of high quality, industry standard equipment sterilisation and processing filters. Our steam filters are available in a selection of grades to meet the particular requirements demanded throughout the production process.

Culinary Steam

Porvair supply a range of filters for the production of particulate free culinary steam for critical applications that come in direct contact with food, beverages, pharmaceuticals or product contact surfaces. These filters exceed the 3A Sanitary Standards 609-03, constructed to remove more than 95% of 2 micron particles.

Process Steam

Porvair’s process steam filters are used where clean, dry steam is critical for plant performance and continuous operation, but where there is no direct contact with the manufactured product.

Porvair’s Sinterflo® stainless steel filter elements are available in high quality 316L sintered metal fibre, metal mesh and sintered metal powder media. Our elements have an exceptional dirt holding capacity and are designed to withstand demanding temperature and pressure conditions.

All components used in the construction of our elements are FDA approved to 21CFR, manufactured according to DIN EN ISO 9001 and meet or exceed the latest EC Directives for Food Contact.

Features and Benefits

  • Sinterflo® stainless steel elements
    The Sinterflo® range of filter elements are constructed in stainless steel 316L as standard. These filters are available in a cylindrical element configuration (giving 0.05m2 (0.55ft2) of active filtration area per 10” length) and pleated element configuration (giving 0.13m2 (1.40ft2) of filtration area).
  • Robustness of design
    Our high quality stainless steel Sinterflo® F Fibre, Sinterflo® M Mesh and Sinterflo® P Powder cartridges have a fully welded construction ensuring an excellent resistance to high temperature environments.
  • High tensile strength
    The method of construction and materials used guarantees cartridge integrity allowing for a typical operation in steam from -51°C (-60°F) to 204°C (400°F), seal dependant, and up to 5bar (72psi) differential pressure in normal flow direction.


Sterilisation, particulate entrainment and purification using filtered steam is used throughout the production process in applications such as:

  • Sterile Packaging
    For the sterilisation of product packaging for the food, beverage and pharmaceutical industries
  • Pharmaceuticals
    Used in the purification of product and manufacturing equipment and the prevention of contaminants.
  • Breweries
    For bottling lines, sterilising equipment, removing pipe-scale and prevention of fouling of valves and injectors.
  • Dairies
    For the sterilisation of process equipment and direct/indirect thermal processing of foodstuffs.
  • Food and Beverages
    For bottling and canning processes.
  • Chemical Production
    For the removal of bacteria and contaminants in fermentation and sanitisation processes in fermentors and bioreactors.

Materials of Manufacture

316L stainless steel as standard.

Cartridge Dimensions

Diameter*: 66mm (2.6") as standard.
Lengths*: 125mm (5"), 250mm (10" ), 498mm (20"), 745mm (30") and 1012mm (40").

*Other diameters and non-standard lengths available on request.

Effective Filtration Area (per 10" length)

Pleated element: 0.13m2 (1.40ft2)
Cylindrical element: 0.05m2 (0.54ft2)

Gaskets and O-Rings

EPDM as standard. Nitrile, PTFE, Silicone, Viton® and PTFE coated Viton® available on request or by process selection.

Maximum Differential Pressure* (all lengths)

Normal flow direction: up to 5bar (72psi)
Reverse flow direction: up to 3bar (44psi)

Stainless Steel Media Grades

Stainless Steel Grades Micron Rating (μm) (micron code) Liquids (μm) (99.9% efficiency) Gases (μm) (99.9% efficiency)
Sinterflo® F Stainless Steel Media Grades
F3 3 (0003) 3* 1
F5 5 (0005) 5* 1.5
F10 10 (0010) 10* 3
F15 15 (0015) 15* 4
F20 20 (0020) 20* 6
F30 30 (0030) 30* 8
F40 40 (0040) 40* 11
F60 60 (0060) 60* 16
Sinterflo® M Stainless Steel Media Grades
M3 3 (0003) 10** 2
M5 5 (0005) 18** 13
M10 10 (0010) 25** 18
M15 15 (0015) 35** 25
M25 25 (0025) 30** 20
M30 30 (0030) 40** 30
M35 35 (0035) 50** 45
M70 70 (0070) 75** 60
Stainless Steel Grades Micron Rating (μm) (micron code) Liquids (μm) (99.9% efficiency) Gases (μm) (99.9% efficiency)
Sinterflo® F Stainless Steel Media Grades
S10 6 (0006) 6* 0.7
S20 10 (0010) 10* 0.8
S30 15 (0015) 15* 4
S36 25 (0025) 25* 5
S40 30 (0030) 30* 6
S41 40 (0040) 40* 8
S50 60 (0060) 60* 15

Available Downloads

RR Retention Rating
MT Maximum temperature recommended of a working product in degrees centigrade
MoC Primary material of construction
MoC Primary material of construction
MP Maximum working pressure of housing in bar
Brand Manufacturing brand name supplying the product
FE Filter efficiency
Q Quality assurances and certificates validating this product