JW Winco GN 7404 Two-Way Breathable Membranes

JW Winco's GN 7404 two-way breathable membranes prevent dirt, water and oil from entering or leaving a system.

September 13, 2019
JW Winco, Inc., A Ganter Company
Jw Winco Gn7404 Membrane
Winco Logo 2016 4c Large

With a pore size of 1.2 µm, oleophobic and hydrophobic membranes GN 7404 from JW Winco provide reliable aeration and ventilation.

  • Does not allow dirt particles, droplets of oil or water to pass through membrane
  • Dirt and moisture are kept away from inside of housing, and lubricants such as oils cannot escape
  • Protected against mechanical stress by protective sieve made of stainless steel
  • Should be installed in vertical surfaces so that no liquids can collect on membrane, which could impair pressure balance
  • Nominal differential pressure P1 to P2 of 1 bar (14.5 psi)
  • Maximum air flow, depending on diameter, is up to 34 l/min (
  • Retains function up to external pressure differential of 2 bar (29 psi) or internal pressure differential of up to 10 bar (145 psi)
  • Maximum operating temperature is 100 C (212 F)
  • Membranes made of nylon fleece impregnated with acrylic copolymer
  • Porosity remains unchanged and can range between 0.2 and 10 µm if desired
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