Screw-Fit Vents

Donaldson Screw-Fit enclosure protection vents provide protection from particles, water, oils, and liquids while allowing pressure and temperature equalization. 

Screw-Fit vents extend the life of the enclosure and improve reliability because they:

• Prevent the passage of harmful particles and liquids into the device
• Allow for constant pressure equalization during altitude and temperature fluctuations

Key Features & Benefits

• Robust design provides maximum protection from harsh environments
• Hydrophobic vent meets water repellency ratings up to IP69K
• Oleophobic vent meets oil repellency ratings up to 8
• Provides dust and liquid protection while equalizing pressure
• Screw-Fit design integrates easily into your device for quick assembly
• Secure vent cap design will not separate from the body during installation or application
• Durable automotive-grade glass-filled PBT plastic provides high strength and resistance to harsh environment

Test Specification

• DIN40050.9: Degree of Protection (IP-Code); Protection against water and dust
• ASTM B117-09: Salt Spray Resistance - 100 hours spray at elevated temperature and pressure
• ASTM G155-05: UV resistance - 10 days extreme exposure
• IEC 60068-2-78: High Temperature and RH - 10 days exposure
• ASTM E96-10: Water Vapor Transmission Rate - Desiccant method
• Temperature resistance: 48 hours at -45°C and 48 hours at 80°C
• IEC 60068-2-10: Antimicrobial activity grade 2b
• UL 94: Flammability of Plastic Housing – V-0 Rated

Handling & Specification

• Clean mounting surface and area where Screw-Fit vent will be installed to remove any contamination
• Allow surface to dry after cleaning
• Ideal location for installation is on a flat, vertical surface on an exterior housing wall. This location will prevent any liquids from collecting
• Insert the Screw-Fit vent into the housing with the threads aligned properly and screw into the housing
• After ensuring that the vent is threaded properly, tighten the vent to 0.6 - 1.0 Nm (5-10 in-lb)
• Optional hex nut (P516960) is available for M12x1.5 Screw-Fit vents
• Chamfer recommended for optimal O-Ring seal when wall thickness is suitable