Filtration Products
Design Guide
The Intelligent Use of Water.
®
Introduction to Landscape
Filtration
Water Sources and Flow
The reduction of clean fresh water sources available for irrigation presents a demanding challenge. Water supplies are less
stable now than in years past and using reclaimed or other
lower quality water sources is becoming more the norm.
Irrigation systems can become clogged with dirt, debris
and other contaminants pulled in from a water source.
Nozzles, rotors, valves and other equipment can become
The use of alternative water supplies creates a
need to remove contaminants such as algae,
sand, silt, pollen, bugs, scale, rust, mussels,
suspended solids and microbiological growth
from water before it can be used for irrigation.
Rain Bird Filter Products
Rain Bird Corporation’s commitment to the Intelligent
Use of Water® has led us to develop ltration products
capable of maximizing use of changing water supplies.
Rain Bird oers products such as pump suction screens,
automatic self-cleaning screen lters, disc lters, centrifugal sand separators, and sand media.
Our products are regularly used in irrigation appli-
wells, irrigation ponds and other water sources.
Algae Asian Clams Fish Zebra Mussels Sticks/Leaves Sand/Silt
Water Sample Analysis
Send us a one liter sample of water and we'll run a test for total suspended solids
(TSS). The test helps us determine an appropriate filter size for the application.
•
•
Sample(s) should be labeled properly.
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Contents
Introduction to Landscape Filtration .......... 1
Water Sources and Flow .........................................1
Rain Bird Filter Products ........................................1
Filtration Layout for Landscape Irrigation ..........3
Filter Options Guide ................................................4
Rain Bird Filtration Products ....................... 5
Controllers ................................................................5
Disc Filters .................................................................5
Filtration Products Design Guide
HDF-Series .................................................................5
Hydraulic Suction Scanning Filters ...................... 6
G-Series ......................................................................6
I+ Series ......................................................................6
Pump Suction Screen .............................................7
PSS-Series ..................................................................7
Centrifugal Sand Separator ...................................7
CS-Series ....................................................................7
Sand Media Filter ......................................................7
SM-Series ....................................................................7
Filter Selection Guidelines .......................... 8
De-Rating Filters Based on Water Quality ..........9
Additional Tips And Considerations ....................9
...................................10
For more filtration information, please call 877-648-9532 or email filters@rainbird.com
www.rainbird.com
www.rainbird.com 2
Filtration Layout for Landscape Irrigation
Dirty water can come from potable and reclaimed water, lakes, ponds, streams, rivers, surface water, wells and reservoirs.
6
PRIMARY FILTERPRIMARY FILTERPRE-FILTER
6
SM-SERIES
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Filtration Products Design Guide
Filter Options Guide
It's important to choose the right filtration for each application.
High water quality will assure that your irrigation system functions at
optimum levels.
Filtration Options
Filter Type
Automatic
Hydraulic
Suction
Scanning
Screen Filter
Disc Filters
Automatic
Electric
Suction
Scanning
Screen Filter
Sand Media
Centrifugal
Sand
Separator
Pump Suction
Screen
Particulate
Removal
Very High:
Flush water
volume is low
fast (4 to 20 sec.)
Very High:
Discs provide
Very High:
Flush water
volume is low
fast (6 to 20 sec.)
Very High:
Flush water volume
time can be very
high - as much as
10 min or more.
High:
Batch or
continuous
Low: (high for large
particles) - prevents
debris from
entering pump
Degree of
Filtration
40-1000μ
50-400μ
40-1000μ
75μ (Multi
Media to
10μ) Flow
Sensitive*
Captures
down to 75μ
level. Cannot
sensitive*
12 Mesh
(1,680μ)
Economic
Size
500 - 7250+
GPM (136.4 -
1977.5 m
50 - 800+ GPM
(13.6 – 218.2
500 - 7250+
GPM (136.4 -
1977.5 m
954.6 m
10 - 8300 GPM
1091 m
3
/hr)
3
m
/hr)
3
/hr)
50 - 3500+
GPM (13.6 -
3
/hr)
(2.7 - 2264
3
m
/hr)
200 - 4000
GPM (54.5 -
3
/hr)
Installation /
Operation
Easy, automatic
operation does
not interrupt
during rinse cycle.
Easy, dual canister
(or more) are
required for
uninterrupted
operation.
Easy, automatic
operation does not
interrupt system
cycle.
Dual tanks (or
more) are required
for uninterrupted
operation.
Easy, Suitable for
full- time operation.
Easy, Suitable for
full- time operation.
Maintenance
Low Best
Low Best
Higher Better
Requires
periodic media
changes
Low to high,
dependent on
water quality
and manual vs
auto purge.
Low Best
Total Cost of
Ownership
Better
Better
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Rain Bird Filtration Products
centrifugal sand separators. Products are regularly used
reclaimed water from reservoirs, rivers, wells, irrigation
ponds and other water sources.
Controllers
ability. Our uniquely designed systems allow cleaning
tem. The controllers are designed to automatically initi-
or manual activation.
Disc Filters
HDF-Series
• Perfect for 50 - 800 GPM (15.6 - 218.2 m
applications
• Ideal for both surface and well water containing both
organic and inorganic materials
• Patented anti-clogging device reduces backwash
frequency and duration
• Polypropylene manifolds eliminate corrosion and rust
concerns.
• Pre-assembled and pre-wired, requiring only inlet and
outlet connections.
• Easy to maintain
3
/hr) and higher
-
-
Anti-Clogging Device
from the disc a high percentage of particles suspended in water.
Achieving the optimal performance results in water savings and low
maintenance.
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Hydraulic Suction Scanning
Filtration Products Design Guide
Filters
Powered by line water pressure, simple Rain Bird
ential pressure, preset time or manually. Filtration
surface debris is removed until every square inch is
100% clean.
G-Series
• Perfect for 2” to 6” (DN 50 to DN 150)
applications
• Polyester powder coated carbon steel and
Stainless Steel options
• Space saving vertical conguration
• Eective hydraulically powered backwash
• Low backush volume
Customization Options
-
Rain Bird’s complete line of filtration systems can be
customized with manifolds and filter connections
to fit existing piping.
I-Series
• Perfect for 4” to 14” (DN 100 to DN 350)
applications
• Polyester powder coated carbon steel and
Stainless Steel options
• Horizontal Conguration
• Eective hydraulically powered backwash
• Low backush volume
Filtration is the single most effective way to increase irrigation system
performance and minimize maintenance caused by dirty water.
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Pump Suction Screen
Centrifugal Sand Separator
PSS-Series
Attaches to intake line to remove gross
• •
solids from the water source
Powered by line water pressure
•
Self cleaning, fully automatic operation
•
Made of galvanized steel
•
CS-Series
Prevents damage to system pumps and equipment caused from clogging
Centrifugal separation of abrasive sand, rock, grit
•
and other inorganic contaminants
•
75µ (200 mesh)
•
Simple operation (no electricity required)
•
Manual purge operation (automatic purge
•
optional)
Sand Media Filter
SM-Series
• Ecient sub 100 micron ltration solution
• Fully Automatic
• Available in Coated Carbon Steel and
Stainless Steel
• Skid mounted and Ground Mounted designs
• Multi-Media upgrade options for ner and
specic ltration needs
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Filtration Products Design Guide
Filter Selection Guidelines
Select a water filter based on the specific
requirements of the application.
1.
•
mentous applications.
•
debris.
2. Micron Requirements for the Application
Rule of Thumb:
possible micron requirement.
Drip tape (80µ)
»
Emitters (100µ)
»
Micro-sprinklers (130µ)
»
Micro jets (130µ)
»
Impact sprinklers (300µ)
»
Spray heads (200µ)
»
Valves (130µ)
»
Drip irrigation (100µ)
»
Gear & rotor (200µ)
»
Golf Rotors (300μ)
»
Mussel & clam control (40-80µ),
»
very special – consult Rain Bird
3. Amount of Suspended Solids in Water
Rule of Thumb: Design a system that can
accommodate worst-case conditions if the
water quality changes.
Water Quality
4. Line size (in inches)
Design for existing or planned line size.
»
5. Flow rate minimum and maximum GPM
Rule of Thumb:
-
6. Physical Space Available
7. Minimum/Maximum Operating Pressure (PSI)
than the system is expected to require.
Choose vertical or horizontal orientation to
»
accommodate service clearance requirements.
»
rated pressure for operation.
NOTE:
-
anism is engaged. System pressure is necessary to
Filter Types
Type
HDF Disc Filters 50 / 3.4
G-Series Filters
I and E-Series Filters
Sand Media
* Depending on application requirements
NOTE: If minimum operating pressures are not
available, please consult your Rain Bird representative.
Min Pressure
(PSI / Bar)
40 / 2.7
40 / 2.7
40 / 2.7
Max Pressure
(PSI / Bar)
140 / 9.5
150 / 10.2
150 / 10.2
80-150 / 5.4-10.2*
Quality TSS Example
GOOD < 20 mg/L (ppm) Well Water N/A
AVG. < 40 mg/L (ppm) Clear Lake Water 0.85
POOR < 80 mg/L (ppm) River Water 0.50
BAD < 110 mg/L (ppm) Brown or green water
(mud or heavy algae)
For water quality values above 110 ppm, please consult factory for
custom recommendations.
For example: A 6" filter rated for 1000 GPM with 100 micron with “good” quality water should be sized to accommodate 500 GPM. of “poor” quality water.
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De-rating
Multiplier
0.35
For filter sizing and selection
assistance, call us at 877-648-9532 or
send an email to filters@rainbird.com
De-Rating Filters Based on Water
Quality
Rule of Thumb: Well water contains inorganic
debris such as sand, while pond or surface
water contains largely organic matter such as
algae and leaves. The water source and debris
load must be taken into consideration when
particle loading it can handle. This will vary somewhat
depending on the size of the particles in the water and
the concentration of those particles at various sizes.
A review of the water’s PSA or TSS determine the solids
level and de-rating required. Particle size, concentration
and total volume will dictate the solids reduction that
can be achieved with any given screen size.
Additional Tips And
Considerations
Operating Pressure
The inlet pressure should never drop below the rec-
•
ommended minimum discharge PSI.
•
operating pressure to allow for a pressure drop when
pressure).
Higher inlet pressures than the recommended mini-
•
mum helps guarantee ideal rinsing conditions.
A pressure gauge should be installed on the inlet port
•
rinse cycle.
Reverse Osmosis (R/O) Water and High Chloride
content water sources
• Filtration of R/O water sources requires special consid-
eration. Standard construction materials (including SS)
typically require upgrading. Additionally, high chloride
content water sources can attack standard construction materials (including SS) and typically require
upgrading as well. Water tests including Chloride and
Free Chlorine levels are recommended to ensure
proper materials are used.
Controlled Outlet Valves
A Controlled Outlet Valve (COV for short) is a valve
•
minimum pressure required for both the rinse cycle
and downstream consumption.
•
that Rain Bird sells is listed on the Tech Spec sheet.
The valve can be actuated by any of several methods
hydraulically, electrically or pneumatically.
Bypass Manifolds
A manual bypass is recommended for applications
•
The valve is normally a manually actuated valve,
•
is always recommended when installing a by-pass
series unit.
•
automatic by-pass will also be isolated during servicing. Note: inlet and outlet isolation valves are also
required for manual bypass mode.
Opening Flush Valve to Atmosphere
The drain line connected to the rinse valve should be
•
attached, according to the following conditions:
In all cases, the drain lines or header (4" or greater)
•
must be drained to atmosphere with no restriction.
The addition of back pressure on the rinse valve drain
A 4" line should be utilized after the ball valve.
•
Piping run should preferably not exceed 30 feet.
•
Piping should not include more than two (2) 90°
•
elbows.
Piping should be installed level or pitch down to avoid
•
Piping should never discharge below water level in a
•
body of water.
The open end of piping should be securely mounted
•
-
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Filamentous
Micron/Mesh
• Micron:
• Mesh: Number of holes per one inch length of screen
Filtration Products Design Guide
Particle Size Analysis (PSA)
A particle size measurement that determines the size
range, and/or the average, or mean size of the particles in
a water sample. The particle size can have considerable
Particle Size Distribution (PSD)
-
A measurement designed to determine the size and
range of particles of a material.
Parts Per Million (PPM)
This is a way of expressing the concentration of something in water. So parts per million or ppm means out of
a million in the water. One ppm is equivalent to 1 milligram per liter of water (mg/l).
Mesh/Micron Conversion
Mesh Micron Inch Mesh Micron Inch
4 5205 0.2030 80 177 0.0070
8 2487 0.0970 100 149 0.0059
10 1923 0.0750 120 125 0.0049
14 1307 0.0510 140 105 0.0041
16 1000 0.0394 170 88 0.0035
20 840 0.0331 200 74 0.0029
25 710 0.0280 230 62 0.0024
30 590 0.0232 270 53 0.0021
35 500 0.0197 325 44 0.0017
40 420 0.0165 400 37 0.0015
45 350 0.0138 550 25 0.0009
50 297 0.0117 800 15 0.0006
60 250 0.0098 1250 10 0.0004
70 210 0.0083 ***** 5 0.00002
out). It is measured in pounds per square inch (PSI).
Total Suspended Solids (TSS)
quality parameter used for example to assess the quality
of source water.
Types of Filter Screens Available
Stainless Steel Screen options
Woven on
PVC Support
Screen Patterns
Hydraulic Collapse D.P. 300 PSI 300 PSI
Temp Rating 150 °F 300 °F
Material St/St 316L St/St 316L
Multi-layered
Sintered
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The Intelligent Use of Water.
LEADERSHIP • EDUCATION • PARTNERSHIPS • PRODUCTS
™
At Rain Bird, we believe it is our responsibility to
develop products and technologies that use water
eciently. Our commitment also extends to
education, training and services for our industry
and our communities.
The need to conserve water has never been greater.
We want to do even more, and with your help, we
can. Visit www.rainbird.com for more information
about The Intelligent Use of Water.
™
Rain Bird Corporation
6991 East Southpoint Road
Tucson AZ 85756
USA
Tel.: (520) 741-6100
Fax: (520) 806-5678
Rain Bird Corporation
970 W. Sierra Madre
Azusa, CA 91702
USA
Tel.: (626) 963-9311
Filter Support
U.S. and Canada only
1+ 877-648-9532
lters@rainbird.com
For more filtration information, please call 877-648-9532 or email filters@rainbird.com
www.rainbird.com
® Registered Trademark of Rain Bird Corporation
© 2020 Rain Bird Corporation 5/20
D40957 18MY20
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