We can customize our vent caps for special applications. Below are examples of a few of the customizations we have done.
SCREEN MESH
In our smaller vent caps under 3 inches, the screen meshes we use are 24 mesh or finer to exclude insects such as mosquitoes. The mesh is plastic so it it non-corroding, however there are different choice of material available. Conventionally we use polypropylene for its physical rigidity but Nylon and Polyester are also viable alternatives. Here is a chemical resistance chart comparing the three materials side-by-side.
VENT CAP WITH FINE SCREEN. Due to a local ordinance this customer wanted an 8 inch vent cap with 31 mesh screen (600 micron) instead of the perforated PVC sheet.
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LOW PROFILE VENT CAP WITH FLANGE MOUNT for large tanks. Screen is perforated PVC with 1/8″ holes – 40% open area. This unit is a low profile with oeveral height only 6 inches.
TALL VENT CAP made to our customer’s specifications. The intent was to prevent sloshing in vehicles.
VENT CAP with a built-in check valve to control air flow in one direction.
VENT CAP with a custom machined flange on our CNC machine. (Braylock mounting-hole pattern).