Rain Bird DAS-075 I ASVF User manual

ASVF Anti-siphon Valve
Operation Manual
DAS-075 I ASVF 3/4”
DAS-100 I ASVF 1”

2
ASVF Anti-siphon Valve Operation Manual
Anti-Siphon Valves for Backflow Prevention
How to Select the Right Valve Size
Assembly of Sprinkler Valves to Pipe
For use with allstandard sprinkler controllers with 24 volt
ACoutput. The DAS I ASVF valves are diaphragm anti-
siphon valves withflowcontrol and atmospheric vacuum
breaker.
NOTE: TheseRainBirdvalves aredesigned forusewith
staticwaterpressures ofa MAXIMUM of 150PSI. Forhigher
pressures, apressureregulatorshouldbe installed. These
valvesarefor outdoor watering use only.
Fordirty watersystems-usingwells,lakes, ditches, etc.for
yourwatersupply, be suretoinstalla 100 mesh (orfiner)
wirefilter or screenfilterbefore theelectricvalves.For use in
coldwaterlessthan 110°F(43.3°C), applications only.
The valve size (3/4” or 1”) is determined by the water
flow (measured in gallons per minute, or GPM) of the
main line or the sprinkler circuit.
3/4” VALVES: 13 GPM or less.
1” VALVES: 14 GPM or more.
1“valves and pipes allow longer runs and more sprinkler
heads per circuit, as well as potentially reducing the total
number of valves required.
A sprinkler system is made up of one or more groups of
sprinklers(called circuits) each operated by its own con-
trol valve. Study the illustrations and follow the instruc-
tions for proper assembly.
1. Before connecting and testing the assembly, thor-
oughly flush the main line to prevent debris from
damaging the valves.
2. Onthe inlet side of the control valve, use galvanized
steel pipeor thick-walled, Schedule 40 PVC, white
plastic pipe, asthis pipe is under constant pressure.
Onthe outlet side of the control valve, thin-walled
PVC pipe or flexible polyethylene pipe may used.
3. To assure a watertight connection, use only one to
two turns of Teflon tape on the threaded valve-to-
pipeconnections. DO NOT USE PIPE SOLVENT OR PIPE
DOPE. THIS MAY DAMAGE THE VALVE. DO NOT OVER-
TIGHTEN. Screw adapters into place finger tight.
Tighten adapters one to two additional turns.
4. Install a master shutoff valve before all electric valves,
sothat the water can be conveniently turned off if a
valve needs servicing.
5. When grouping valves, allow sufficient spacing
between valves to unscrew the valve from the pipe
(about6 inches).
The DAS/ASVF models meetor exceed mostbuilding code requirements for
connecting a sprinkler system to a city water supply.
These valvesprevent the possibility of back siphoning of water from sprinkler
lines into the drinking water.
The anti-siphon valves must be installed at least 6 inches above the highest
sprinkler or elevated piping in the circuit to meet most codes, (SeeDiagram
1.)(Consult local buildingcode.)
CAUTION: Donot usethis anti-siphonvalveasamainlinebackflow device,nor
asamastervalve. It isnot designednor approved tobeunderconstantwater
pressureon both sides of valve.Thisvalvemustbeoperated continuously for
morethan twelve (12)hours.Do notinstallany othervalves down stream. If
installedincorrectly with constantpressureon both sidesof valve, itispossible
thevalve will failor burst.
±6"
±6"
Inlet
Outlet to
Sprinklers
Wires to
Controller
Test this
connection for
water tightness
before attaching
outlet pipe.
The valve
must be
mounted at
least 6”above
the highest
sprinkler on
the circuit.
1

Valve Operation
Connection, Testing and Wiring These Valves
Your Rain Bird valve offers two features with which you
shouldbecomefamiliar.
FLOW CONTROL: This feature allows you to control the
amount of water going to your sprinklers. To allow more
water through the valve, turn the black knob counter-
clockwise UNTIL RESISTANCE IS FELT. This is fully open
position.
To reduce the amount of water, turn the black knob
clockwise. If you keep turning, you can turn the valve all
the way off. In this case, the valve will not open.
MANUAL CONTROL: This allows you to override your
automatic controller and turn your sprinklers on AT THE
VALVE . The valve can be turned on manually with the
external bleed screw or with the internal solenoid bleed.
The solenoid (block cylinder with wires) is wired to your
controller andturns the valve off and on electronically.
Tooperate manually with the internal bleed, turn the
solenoid 1/4 turn counter-clockwise; this opens the valve.
The sprinklers will continue to run until you turn the
solenoid back in the clockwise direction (snugly), butdo
not over-tighten.
Toturn on (open) the valve with the external bleed, turn
the external bleed screw counter-clockwise, 1/2 turn.
Water will exit the external bleed while the valve is on. To
turnoff the valve, turn the external bleedscrew clockwise
until snug. Do not over-tighten.
TOOPERATE YOUR VALVE ELECTRONICALLY, BE SURE THE
SOLENOIDIS TURNED ALL THE WAY TOTHE CLOCKWISE
POSITION.
1. Shut off the water main or the master shutoff valve
and connect the valve or valve assembly to the main
supplypipe. Be sure the water lines are flushed and
clean.
2. Test the pipe and valve connections for water tight-
nessas follows:
A. Turn the flow control clockwise (down) to off
before turningon the water supply.
B. Tumon the waterand check for leaks.
3. Now completethe hookup by connecting the outlet
pipes from the valves to the sprinklers.
4. Set flow control adjustment before making wiring
connections.
5. WIRE CONNECTIONS (Diagram 2). Use 18 gauge
wire to connect the wires to the controller. Wiring
that is to be buried alongside the pipes should be
APPROVED forUNDERGROUND use. For all splices, use
water tight connectors. (Do not exceed 600 ft.)
6. Each valvehas two wires. Either one may be used as
the “HOT” wire which is connected directly to a sta-
tion output terminal in the controller. The other wire
is“COMMON” and may be joined to the common
wires of other valves with one wire running to the
commonterminal of the controller. Check operation
using the controller.
6. Do not connect the outlet side (piping to sprinkler
heads) withoutfirst testing for leaks. If the outlet side
is connected andthere is a leak, the pipe would have
tobe cut in order to tighten the connection.
3
Common
Wire Hot Wires
Common ControllerTerminals
Valve
Solenoid
2

Repair Kits
Two types of repair kits are
available (Diagram 3).
1. SRK-ASV Solenoid
Replacement Kit.The
SRK-ASV will replace a
defective solenoidon models
DAS-075/ASVF and
DAS-100/ASVF.
2. DRK-ASV Diaphragm
Replacement Kit.The DRKASV
will replace a defective
diaphragm on models
DAS-075/ASVF and
DAS-1OO/ASVF.
For technical assistance call us at
1-800-RAIN-BIRD. Diaphragm
Replacement
Kit (DRK-ASV)
Solenoid
Replacement
Kit (SRK-ASV)
Part#
170277
3
4

Symptom Solution
Water Won’t Shut
Off (seeping or full
flow)
1. Incorrect controller setting (check length of run time)
2. Loose solenoid (should be tight)
3. Loose bleed screw - check and tighten (finger tight only)
4a. Diaphragm filter clogged. Use manual, external bleed to flush valve. If this does not improve
operation, remove top of valve (6 screws). Remove diaphragm and inspect filter for debris.
(Check 4b at the same time.) Clean diaphragm filter and reassemble valve.
4b. Diaphragm/valve seat fouled or damaged. Remove diaphragm and inspect diaphragm and
valve seat for damage or debris. Clean or replace diaphragm and reassemble valve.
Valve Won’t Turn On
Manually
1. Flow control turned off. Check by turning black knob counterclockwise until encountering
resistance. Do not force beyond point of resistance. Turn knob back clockwise, approximately
one half turn.
2. Water supply off at meter or system control shut-off. (Check this first by manually bleeding the
valve with either bleed screw or by turning solenoid counterclockwise).
3. Blocked ports. If valve will turn on with manual, external bleed screw but NOT by turning the
solenoid for internal bleed, remove the solenoid (rod check solenoid cavity for debris. Visually
check small square hole at edge of cavity and carefully run a straightened wire through the
center round hole to clear tube of possible debris. Take care not to scratch sides of center port
tube as any change in size can affect valve operation.
Valves Won’t Turn
On Electronically
(with controller)
1. Controller settings incorrect. Check programming, start times, run times and day schedules.
2. If none of the valves are working, check the common (ground) wire for a tight connection or
damage. If only one or part of the valves do not work, check wiring for damage (staples, nails,
cracks) between controller and valve location.
3. Check all of reasons in Section B.
4. Faulty solenoid. Turn off water supply. Switch solenoid with one from a nearby operational
valve. If original valve works with second solenoid, replace original solenoid. (Install water-
tight wire connections on all valves at this time to avoid future solenoid shorts and/or failures.)
5. Controller not supplying power to valve(s). Check fuse. If blown, replace fuse with same size.
(Do not change sizes. A different size fuse will damage controller during operation and will void
the warranty.) If fuse is OK, either use a volt/ohm meter to check controller output (24 VAC)
at each terminal screw (station/valve connection) OR disconnect an operating solenoid from a
valve and take it to the controller. Attach one wire to the “C” terminal (common/ground) and
attach the other wire to the station which is not working. Activate the controller in manual
start. The solenoid should click (pull the plunger up into the solenoid tube) and it may hum.
If nothing happens, (and the controller is still under warranty) you should either return your
controller to the store or call your installer. If it’s no longer under warranty, you will need to
purchase a new controller. Be sure to install water-tight connectors on your wiring and a surge
protector (if you live in areas highly prone to lightning). This will help to avoid future problems.
Troubleshooting Guide
5

6
Approved Valve Group Installation Using PVC Pipe and Fittings
4
To Sprinklers
PVC Pipe
Connecting pipe
from water source
To backyard
control valves
Diaphragm Automatic
Anti-Siphon control valves
Install valves at least
6” above the highest
sprinkler
Service
Line to
House
To
Control
Valves
Shuto
Valve
Compression
Tee Water Meter Service
Line
from
Street
Connecting pipe
and ttings to be the
same size as the
largest control valve
in the group

7
4
To Sprinklers
PVC Pipe
Connecting pipe
from water source
To backyard
control valves
Diaphragm Automatic
Anti-Siphon control valves
Install valves at least
6” above the highest
sprinkler
Service
Line to
House
To
Control
Valves
Shuto
Valve
Compression
Tee Water Meter Service
Line
from
Street
Connecting pipe
and ttings to be the
same size as the
largest control valve
in the group

®Registered trademark of Rain Bird Corporation.
© 2011 Rain Bird Corporation 7/11 P/N 170278
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