STC/4Q™ Air Vent Filter – Flow Rates up to 8000m³/hr

STC/4Q™ Air Vent Filter – Flow Rates up to 8000m³/hr


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Suitable for all vessel types including concrete, plastic and stainless steel.

Water, Oil and Gas Industry Vessels with high velocity sterile venting demands. Centre vacuum and pressure relief valve termination allowing straight through relief with negligible resistance across the system.

The STC/4Q HEPA filter is manufactured under a patented process and has been engineered to provide absolute microbiological protection with an even higher flow rate against a low pressure drop.

The STC/4Q filter is certified in accordance with BS EN 1822 (H14) and tested against BS 3928.

20 year life span painted finish over 316 stainless steel available for gas and oil industries





STC/4Q™ Air Vent Filter – Flow Rates up to 8000m³/hr
Stainless Steel
Filter Media
Specially formulated Hydrophobic Microglass water repellent paper to BS 2823.
Operating Temperature:
Up to 120°C for short periods. RH Conditions: 100% RH Environment (no free moisture).
Pressure Integrity:
3 Kpa min. Differential pressure in both flow modes.
TSE Free Manufacture:
The Foramaflow filter system is completely TSE Free (Transmissible Spongiform Encephalopathy) in accordance with the Food Hygiene, pharmaceutical and the MHRA industry standards, this includes all of our primary packaging.
Flow Rate:
8000m³/hr (1108 L/min) at a pressure drop of 120Pa = 12mm wg
HEPA filter >H14 - BS EN 1822. Tested against BS 3928
All fitting types with any size greater than 8" (200mm)
Country of origin United Kingdom. HS number 84213925