Polypropylene Guard Filters for Clear, Bright Beverages

The Trapfil™ filter from Porvair Filtration Group has been specifically developed for the retention of diatomite and polyvinylpolypyrrolidone (PVPP) particles. It is manufactured from materials which are 100% FDA (Food and Drug Administration) approved and fully welded for strength and integrity.

Features and Benefits

  • Backflushing
    High strength construction of the Trapfil™ cartridge enables repeated backflushing without loss of integrity.
  • Chemical regeneration
  • Suitable for steam and hot water sanitisation
  • Guaranteed removal ratings
    Trapfil™ cartridges are validated using the recognised industry standard modified OSU-F2 single pass test to Beta 5000 (99.98% efficiency)

Materials of Manufacture

Filter media: Polypropylene
Support layers: Polypropylene
Inner core: Polypropylene
Outer support: Polypropylene
End fittings: Polypropylene
Support ring: Stainless steel

Gaskets and O-Rings

Ethylene Propylene, PTFE encapsulated, Silicone, Viton, Nitrile or Polypropylene felt.

Maximum Differential Pressure

Normal flow direction at:
20°C (68°F): 6.0bar (87psi)
80°C (176°F): 4.0bar (58psi)
100°C (212°F): 3.0bar (43psi)
Reverse flow direction at:
20°C (68°F): 2.1bar (30psi)
80°C (176°F): 1.0bar (15psi)
100°C (212°F): 0.5bar (7psi)

Operating Temperature

Maximum continuous: 80°C (140°F)

Integrity Testing

Trapfil™ filter cartridges are batch tested for integrity using the Bubble Point Test. Procedural details are available from Porvair.

Effective Filtration Area

Up to 0.6m2 per 250mm module.


Trapfil™ cartridges are suitable for the guard filtration of a wide range of beverages, to enable the economic removal of diatomite and PVPP particles.

  • Stabilisation
    For the removal of coarse and fine PVPP powder used in the beer and wine stabilisation processes.
  • Clarification
    For the removal of kieselguhr powder used in the beer and wine clarification processes.

Clean Water Flow Rates

  • Typical clean water flow rate:
    A 254mm (10”) Trapfil™ single cartridge exhibits the flow-ΔP characteristics indicated below, for solutions with a viscosity of 1 centipoise.
  • Other solutions:
    For solutions with a viscosity of greater than 1 centipoise, multiply the indicated differential pressure by the viscosity in centipoise.


Product Attributes
RR 5, 10, 15μ absolute rated Beta 5000
MT80 ̊C
MoC Polypropylene and st/steel support ring
MDP 6 bar @20 ̊C
SA 0.53m2
Brand Porvair
Q FDA 21CFR EC directive for food contact
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