6.3 ANTI-SIPHON VALVE INSTALLATION:
Operating pressure when used with DIG anti-siphon valves: 20-120 PSI
(1.4 to 10.5 bar)
Recommended operating pressure: 20-80 PSI (1.4 to 5.5 bar)
The 720A, 740A and the 760A controllers can be installed on top of DIG’s 3/4”
and 1” anti-siphon valves with model S305 DC solenoids.
NOTE: Wrap all fittings with Teflon tape. Do not use pipe cement on the
valve as this will damage the valve and void the warranty. Make sure when
wrapping fittings with Teflon tape that no excess gets into the internal
assembly. Tighten the fittings with a wrench, but do not over tighten
.
WARNING:
Make sure the anti-siphon valves are installed at least 6
inches higher than the highest sprinkler head on the system or back-
drainage may occur.
1. Flush main line until water runs clear before installation.
2. Shut off main water supply.
3. Make a manifold and install up to six anti-siphon valves with an attached
7X0A series controller to the PVC pipe manifold using 3/4” PVC male
adapters (Figure J) or 3/4” schedule 80 nipple.
4. Mount the controller using the solenoid mounting and connect the wires:
refer to section 4.1 on page 3 for wire connection steps.
5. Test each valve via the controller: refer to section 10.1 on page 27 for how
to perform a manual run.
NOTE:
The arrow on the
anti-siphon valve body
indicates the direction
of water flow.
7
FIGURE J
