| 摘要 |
A retrofit mosquito screen cap attachment denies access to mosquitoes from entering a vent pipe connected to a subterranean septic or other fluid filled tank. It includes a mosquito screen pre-attached to a cap insertable over the one or more vertical open faces of the horizontal portion. The lower opening on the vertical downpipe is simply attached atop the open vent pipe. Preferably the pipe joint is made of PVC which is also the typical material of the vent pipe. A rigid PVC mosquito screening is used, which is bonded or sealed to the retrofit cap covering the pipe joint section. A robust material as opposed to a softer fabric screen is preferable to keep out bats or the beaks of birds attracted to hovering mosquitoes near the openings. The vertical orientation of the two vent holes helps keep debris from accumulating to clog the screened openings. |
