Name: Waterproof Vent Valve & Breather Plug
Brand: BROLERN

Waterproof Vent Valve & Breather Plug

Custom to drawing or sample

Uniform pore distribution

Export packing

Manufactured in Shanghai by BROLERN with matched in-house tooling. Ratings, materials and dimensions are listed in the specification below — other geometries are available on request.

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A waterproof vent valve lets an enclosure equalise pressure with the air around it while stopping water, oil and dust from getting in. BROLERN makes the porous element by sintering the chosen material, then applies a hydrophobic and oleophobic treatment to the target ingress rating, so gas moves through the micro-pores freely and liquid droplets and particles are held back.

The same element family covers disc, column and threaded forms - common threaded sizes are M6, M8, M12, G1/8" and NPT1/8". Reference ingress ratings run IP65 to IP68, and air flow is tuned by pore size and element thickness. Housings can be supplied with an injection-moulded rim, adhesive backing or a threaded shell for line assembly.

Key specifications

Attribute	Detail
Material	PE / PP / PTFE / stainless steel / bronze (selected per medium and environment)
Process	Sintered porous element, then hydrophobic / oleophobic treatment to the required ingress rating; optional rim, adhesive backing or threaded housing
Filtration rating	0.5-100 um
Size range	Disc / column / threaded; diameter 3-50 mm (common 6, 8, 10, 12, 20 mm); thickness or height 2-10 mm; threads M6/M8/M12, G1/8", NPT1/8"; reference IP65-IP68; air flow per pore size & thickness
Applications	Enclosures, sensors, batteries, lamps, automotive & outdoor electronics, breather plugs, threaded vent valves M6/M12
Customization	Material + pore size + housing (rim / adhesive / thread) to drawing or sample