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.

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Fisher 2Y7124 35072 Control Valve Trim 2V7124 seat
Fisher 2Y7124 35072 Control Valve Trim 2V7124 seat
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Fisher 23A4938X012 Control Valve Trim Seat
Fisher 23A4938X012 Control Valve Trim Seat
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BOSCH DIRECTIONAL CONTROL VALVE 9810231279 081WV06P1V1020KE 115 60 NEW
BOSCH DIRECTIONAL CONTROL VALVE 9810231279 081WV06P1V1020KE 115 60 NEW
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JOHNSON CONTROLS V 3000 8012 Pneumatic Valve Actuator 3 to 13 Spring
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HPM Directional Control Valve Pilot Valve 6438C 22 01 Main Valve 6438 PH 21 E 06
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MAC 6633A 000 PM 501DA DIRECTIONAL CONTROL VALVE WITH 2 PME 501DAAG USED J3
MAC 6633A 000 PM 501DA DIRECTIONAL CONTROL VALVE WITH 2 PME 501DAAG USED J3
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Penn Warm Air Temp Control Type 518B Model 1000 Range 100 350F 4 Capillary
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Parker Hannifin Hydraulic Pressure Flow Control Check Valve PCK 1220 S pck1220 s
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Prince LS 3000 1 Directional Control Valve Logsplitter 4 Ways 3 Positions Spr
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PARKER B713BB549A Solenoid Air Control Valve 1 2 In 24VDC
PARKER B713BB549A Solenoid Air Control Valve 1 2 In 24VDC
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4 125 Fisher ED Flanged CI Control Valve 667 Size 45 Actuator NEW Z44 1941
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JOHNSON CONTROLS V 3000 8003 Pneumatic Valve Actuator 3 to 13 Spring
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Daikin Solenoid Controlled Valve KSO G02 2BA 10 N Used WARRANTY
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Rexroth Solenoid Controlled Relief Valve
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NACHI DM G06 C6 10 DIRECTIONAL VALVE MADE IN JAPAN FLOW CONTROL VALVES
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NEW MARK CONTROLS LGE1490551 STEEL COUPLING SLEEVE D488805
NEW MARK CONTROLS LGE1490551 STEEL COUPLING SLEEVE D488805
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Tokimec Vickers Directional Control Valve DG4V 3 2C M P2 T 7 50 Used WARRANTY
Tokimec Vickers Directional Control Valve DG4V 3 2C M P2 T 7 50 Used WARRANTY
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