Control Valve

can i add sprinkler control valves downstream of antisiphon valve?

I've seen two conflicting answers in plumbing books. One is to never install valves downstream of an antisiphon valve to avoid potential damage of antisiphon valve. Other is to add control valves for each circuit downstream of one antisiphon valve. which is correct?

Yes you can. Otherwise, you would need an individual antisiphon for each zone. Many times your antisiphon valve will have an irrigation-type valve prefabricated just up stream from the antisiphon to keep pressure off of the antisiphon when your sprinklers are not running (i.e. Irritrol 2713 valve). This upstream valve is known as a master valve and would likely be a good idea to add as well.

Discover Control Valve On eBay Below:

Smc Control Block w Valves VQ1101N 5 CB Used 77129
Smc Control Block w Valves VQ1101N 5 CB Used 77129
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Parker Flow Control Valve FM6F 20HW Used 74438
Parker Flow Control Valve FM6F 20HW Used 74438
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Mac Control Block w Valves Block994 Used 79994
Mac Control Block w Valves Block994 Used 79994
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New GE WS01F01281 Valve Control Nor D SEALED BOX
New GE WS01F01281 Valve Control Nor D SEALED BOX
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Numatics Control Block w Valves Block997 Used 79997
Numatics Control Block w Valves Block997 Used 79997
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Numatics Control Block w Valves Block996 Used 79996
Numatics Control Block w Valves Block996 Used 79996
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Numatics Control Block w Valves Block995 Used 79995
Numatics Control Block w Valves Block995 Used 79995
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Parker Directional Control Valve D3ML4HN 80497 10 Used 80172
Parker Directional Control Valve D3ML4HN 80497 10 Used 80172
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Numatics Control Block w Valves Block011 Used 80011
Numatics Control Block w Valves Block011 Used 80011
$300.00
Numatics Control Block w Valves Block010 Used 80010
Numatics Control Block w Valves Block010 Used 80010
$300.00
Numatics Control Block w Valve Block007 Used 80007
Numatics Control Block w Valve Block007 Used 80007
$599.00
Numatics Control Block w Valves Block006 Used 80006
Numatics Control Block w Valves Block006 Used 80006
$699.00
Numatics Control Block w Valves Block003 Used 80003
Numatics Control Block w Valves Block003 Used 80003
$400.00
Numatics Control Block w Valves Block004 Used 80004
Numatics Control Block w Valves Block004 Used 80004
$400.00
Numatics Control Block w Valves Block005 Used 80005
Numatics Control Block w Valves Block005 Used 80005
$400.00
Numatics Control Block w Valves Block001 Used 80001
Numatics Control Block w Valves Block001 Used 80001
$599.00
Numatics Control Block w Valves Block002 Used 80002
Numatics Control Block w Valves Block002 Used 80002
$400.00
Numatics Control Block w Valves Block000 Used 80000
Numatics Control Block w Valves Block000 Used 80000
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Numatics Control Block w Valves Block999 Used 79999
Numatics Control Block w Valves Block999 Used 79999
$600.00
Numatics Control Block w Valves Block014 Used 80014
Numatics Control Block w Valves Block014 Used 80014
$300.00
Numatics Control Block w Valves Block015 Used 80015
Numatics Control Block w Valves Block015 Used 80015
$300.00
Numatics Control Block w Valves Block036 Used 80036
Numatics Control Block w Valves Block036 Used 80036
$500.00
Numatics Control Block w Valves Block998 Used 79998
Numatics Control Block w Valves Block998 Used 79998
$599.00
Numatics Control Block w Valves Block018 Used 80018
Numatics Control Block w Valves Block018 Used 80018
$599.00
Numatics Control Block w Valves Block027 Used 80027
Numatics Control Block w Valves Block027 Used 80027
$300.00
Numatics Control Block w Valves Block016 Used 80016
Numatics Control Block w Valves Block016 Used 80016
$599.00
Numatics Control Block w Valves Block028 Used 80028
Numatics Control Block w Valves Block028 Used 80028
$599.00
Numatics Control Block w Valves Block031 Used 80031
Numatics Control Block w Valves Block031 Used 80031
$599.00
Numatics Control Block w Valves Block034 Used 80034
Numatics Control Block w Valves Block034 Used 80034
$599.00
Numatics Control Block w Valves Block035 Used 80035
Numatics Control Block w Valves Block035 Used 80035
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Dickey John 464210430B Driver Valve for DJICS2000 Control
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Mead Fluid Dynamics M 10 Control Valve 4 Way 1 8 Dura Matic NEW
Mead Fluid Dynamics M 10 Control Valve 4 Way 1 8 Dura Matic NEW
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Red Valve Control Pinch Valve Series 5200
Red Valve Control Pinch Valve Series 5200
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Lot of 16 Festo One way flow control valve GRLA 1 8 PK 4 B 151167 1631A9
Lot of 16 Festo One way flow control valve GRLA 1 8 PK 4 B 151167 1631A9
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Vickers Directional Control Valve DG4V32CMWB40 Used 74480
Vickers Directional Control Valve DG4V32CMWB40 Used 74480
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Rexroth Directional Control Valve 4WE10E32 CG24N9K4V Used 74458
Rexroth Directional Control Valve 4WE10E32 CG24N9K4V Used 74458
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Parker 350B Flow Control Valve  32500419 Flow Control Valve
Parker 350B Flow Control Valve 32500419 Flow Control Valve
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Vickers 680920 Directional Control Valve Assembly Used
Vickers 680920 Directional Control Valve Assembly Used
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NACHI SS G03 C6 R C115 E10 WET TYPE SOLENOID DIRECTIONAL CONTROL VALVE G100
NACHI SS G03 C6 R C115 E10 WET TYPE SOLENOID DIRECTIONAL CONTROL VALVE G100
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