First-flush device
(Redirected from First flush)
The purpose of a first-flush device or first flush diverter is to prevent the entry of debris and toxins into the storage/distribution system of a rainwater catchment system.
First flush devices on Appropedia pages[edit | edit source]
- Rainwater catchment at Isla Urbana #First Flushes
- Rainwater harvesting#First flush systems
- Old Growth Cellar rainwater catchment #First flush bucket
- Ersson rainwater harvest and purification #Roofwashers
- WaterPod FBD Rainwater Purification #Description of Final Project
- Daycare rainwater catchment system#The First Flush Sediment Trap
- And all of those linked below in the gallery.
Examples of first flush systems[edit | edit source]
- Various First Flush Systems
-
Rainwater catchment at Isla Urbana
208 liter first flush with floating ball -
Practical Action Rainwater Harvesting
a) the tipping gutter first flush system and b) the floating ball first flush system. -
Old Growth Cellar
15 gallon first flush tank with side drilled. -
Ersson's roofwasher
a hollow ball which, when filled by the initial flow of water, seats itself onto a rubber gasket. -
Waterpod Rainwater Filtering
See 2) Ball Valve 3) First Flush -
Parras Mexico Daycare Rainwater
The first flush is caught by 4" pipe with a floating ball. -
HSU Chiapas Rainwater
Old design that leaked replaced by next image. -
HSU Chiapas Rainwater
New design that use two parallel lengths of pipe. -
CCAT Rainwater
First flush with clear pipe. -
Zane Middle School rainwater catchment
First flush using a small pickle barrel. -
CCAT greenhouse rainwater catchment
First flush using a long black pipe. -
Loleta Elementary rainwater
First flush using a small section in a long white PVC pipe. -
Sanctuary rainwater
First flush using a blue 20 gal barrel. -
Las Malvinas rainwater 2014
First flush using a large white pipe.
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Links[edit | edit source]
- First Flush Calculations
- Saferain - Alternative to the Roof Washer
