Starting a Drip System from an Anti-Siphon Valve, Riser, Faucet, and Inline Valve

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by Stuart Spaulding —
CLIA Certified Landscape Irrigation Auditor Training & Communications Manager at DIG Corp.

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Starting a Drip Irrigation System from an Anti-siphon Valve

Materials needed:

1          ¾” Anti-Siphon Valve (manual or electric)

1          DIG #D54 pressure regulating filter

1          ¾” PVC elbow or TEE (Slip x Thread)

1          DIG #D48 PVC to Poly compression adapter

Teflon tape

PVC Glue

1. Wrap the male threads of the #D54 with 4 to 5 layers of Teflon tape in a clockwise direction
2. Install the PVC elbow (or TEE) on to the male threads on the filter outlet. The arrow on the filter/regulator body points towards the outlet.  Turn the fitting clockwise until hand tight.  Take care not to cross-thread the fitting.
3. Install the filter/regulator on to the anti-siphon valve by turning the inlet clockwise into the anti-siphon valve outlet. Turn the filter/regulator clockwise until hand tight.
4. Glue the #D48 adapter into the PVC fitting using the PVC cement. Apply a thin layer of glue to the inside of the fitting and the outside of the #D54 and push the adapter into the elbow and hold for 10 seconds.
5. Uncoil the ½” poly tubing and connect the end to the compression side of the #D48 adapter by forcing it into the fitting while moving the tubing from side to side.

 

Starting a Drip System from a Sprinkler Riser

Materials Needed:

1          DIG #DSR (Riser Conversion Assembly)

Or

1          DIG #Q59 Conversion Elbow

1          DIG #D57A Screen Filter (Optional)

1          DIG #D46 Pre-Set Pressure Regulator

1          DIG #C38 Swivel TEE

Installation

• No tools are needed for this installation.
• No Teflon tape should be applied to the threads.
• All the components screw on to each other until “hand tight”.
• Make sure the washers are in place in the female fittings or the connections may leak.

 

1. Unscrew and remove the existing sprinkler nozzle.
2. If necessary, flush out the riser by opening & closing the system valve.
3. Install the #Q59 elbow by turning it clockwise on to the male threads on top of the riser.
4. (Optional) Install the #D57A filter on to the elbow by turning the female threads clockwise onto the male threads of the regulator.
5. Install the #D46 pressure regulator by turning it clockwise onto the male threads of the filter (or elbow).
6. Install the #C38 TEE (or #C34 adapter) by turning it clockwise on to the male threads of the pressure regulator.
7. Connect one end of the ½” poly tubing to the swivel TEE by forcing the end into the compression fitting while moving it from side to side.

 

 

Starting a Drip Irrigation System from an Outdoor Faucet

Installing the Head Assembly

 

Materials Needed:

1          DIG #D52 “Y” splitter (Optional)

1          DIG #EVO100 Hose End Timer (Optional)

1          DIG #D45 Backflow Preventer

1          DIG #D57A Screen Filter

1          DIG #D46 Pressure Regulator (pre-set @ 25 psi.)

1          DIG #C34 Swivel adapter

1          DIG #B35 (1/2” poly tubing or DIG starter kit)

• No tools are needed for this installation.
• No Teflon tape should be applied to the threads.
• All the components screw on to each other until “hand tight”.
• Make sure the washers are in place in the female fittings or the connections may leak.
• Some installers may need to use pliers for final tightening, but do not overtighten.

 

Installation

1. Install the Y splitter onto the faucet by turning the female threads clockwise onto the faucet.
2. Install the timer (optional) onto the splitter by turning the female threads clockwise onto the male threads until hand tight.
3. Install the #D45 backflow preventer onto the timer by turning the female threads clockwise onto the male threads of the timer.
4. Install the #D57A screen filter onto the backflow preventer by turning the female threads of the filter clockwise onto the backflow preventer. This is a swivel connection so the filter can be turned without loosening the inlet fitting.
5. Install the #D46 pressure regulator onto the filter by turning the female threads clockwise onto the male threads of the filter.
6. Uncoil the ½” poly tubing and connect one end to the #C34 swivel adapter by forcing the end into the compression side of the fitting while moving the tubing from side-to-side.

 

Starting a Drip Irrigation System from an Electric In-Line Valve

 

Materials needed:

1          ¾” In-Line Valve (AC or DC)

1          DIG #D54 pressure regulating filter

1          ¾” PVC elbow or TEE (Slip x Thread)

1          DIG #D48 PVC to Poly compression adapter

1          Coil of ½” (.700” OD) Poly Tubing

Teflon tape

PVC Glue

 

1. Wrap the male threads of the #D54 with 4 to 5 layers of Teflon tape in a clockwise direction
2. Install the PVC elbow (or TEE) on to the male threads on the filter outlet. The arrow on the filter/regulator body points towards the outlet.  Turn the fitting clockwise until hand tight.  Take care not to cross-thread the fitting.
3. Install the filter/regulator on to the in-line valve by turning the inlet clockwise into the anti-siphon valve outlet. Turn the filter/regulator clockwise until hand tight.
4. Glue the #D48 adapter into the PVC fitting using the PVC cement. Apply a thin layer of glue to the inside of the fitting and the outside of the #D54 and push the adapter into the elbow and hold for 10 seconds.
5. Uncoil the ½” poly tubing and connect the end to the compression side of the #D48 adapter by forcing it into the fitting while moving the tubing from side to side.