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<Gallery caption="Various First Flush Systems"> | <Gallery caption="Various First Flush Systems"> | ||
File:First Flush.jpg| [[Rainwater catchment at Isla Urbana]]<br /> 208 liter first flush with floating ball | |||
File:RWH7.jpg|[[Original:Rainwater_harvesting#First flush systems|Practical Action Rainwater Harvesting]] <br> a) the tipping gutter first flush system and b) the floating ball first flush system. | File:RWH7.jpg|[[Original:Rainwater_harvesting#First flush systems|Practical Action Rainwater Harvesting]] <br> a) the tipping gutter first flush system and b) the floating ball first flush system. | ||
File:Firstflushassembly.JPG|[[Old Growth Cellar rainwater catchment #First flush bucket|Old Growth Cellar]] <br> 15 gallon first flush tank with side drilled. | File:Firstflushassembly.JPG|[[Old Growth Cellar rainwater catchment #First flush bucket|Old Growth Cellar]] <br> 15 gallon first flush tank with side drilled. |
Revision as of 15:43, 24 September 2010
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
- Rainwater catchment at Isla Urbana #First Flushes
- Original:Rainwater_harvesting#First flush systems
- Old Growth Cellar rainwater catchment #First flush bucket
- Original:Ersson rainwater harvest and purification #Roofwashers
- WaterPod FBD Rainwater Purification #Description of Final Project
- Daycare rainwater catchment system#The First Flush Sediment Trap
Examples of 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.
Links
- First Flush Calculations
- Saferain - Alternative to the Roof Washer