JW Winco GN 7404 Two-Way Breathable Membranes

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