Everything You Need to Know About Sprinkler Nozzles
May 20th 2026
The Irritrol 700 Series 1.5" UltraFlow Valve is a commercial-grade irrigation solution engineered specifically to tackle the problem of pressure degradation in high-volume systems. Unlike traditional valves that force water to make sharp, pressure-killing turns, the UltraFlow features a unique straight-through flow path. This innovative design drastically reduces friction loss, ensuring your downstream sprinklers or large-scale drip irrigation mainlines receive the pressure they need to perform flawlessly.
Built for rugged environments, this AC-powered valve features a glass-reinforced nylon body and a heavy-duty Buna-N diaphragm. It excels in challenging setups—from clean municipal water to debris-heavy ponds and canals—thanks to its self-cleaning 150-mesh filter screen. Furthermore, its specialized slow-closing design actively prevents the damaging effects of water hammer, protecting your PVC pipes and expensive system components from sudden pressure spikes.
Detailed specifications for commercial system planning.
| Specification | Details |
|---|---|
| Valve Configuration | Straight-Through In-Line (Underground / Valve Box) |
| Operating Flow Range | 0.1 to 150 Gallons Per Minute (GPM) |
| Operating Pressure Range | 10 to 150 PSI |
| Inlet / Outlet Size | 1 1/2" Female Pipe Thread (FPT) |
| Solenoid Power | 24 VAC (Electric) |
| Additional Features | Internal Bleed, Flow Control, Slow-Closing Design |
Follow these steps to safely plumb and wire your commercial UltraFlow valve.
Step 1: Plumb the Connections
Using Teflon tape (never liquid pipe dope), thread 1.5" male PVC adapters into the inlet and outlet. Ensure the flow arrows on the valve body point in the direction of the water moving toward your irrigation zone.
Step 2: Connect the Wiring
Run direct burial wire from your 24V AC controller into the valve box. Connect one solenoid wire to your common wire, and the other to the designated station wire. Secure all connections tightly with waterproof wire nuts.
Step 3: Flush the System
Before fully sealing the system, use the internal manual bleed lever to open the valve and flush out any PVC shavings, dirt, or construction debris from the mainline.
Step 4: Adjust Flow Control
Activate the zone using your timer. Turn the top flow control dial to fine-tune the water output, preventing over-pressurization of your downstream sprinklers or drip components.
What is the advantage of the UltraFlow straight-through design?
The straight-through flow path drastically reduces internal friction. This prevents the severe pressure drops common in standard globe valves, ensuring maximum water pressure reaches your downstream irrigation components.
Can the Irritrol 700 Series handle dirty pond water?
Yes, the UltraFlow valve is excellent for dirty water applications. It features a built-in, self-cleaning 150-mesh filter screen that prevents sediment, algae, and grit from clogging the internal diaphragm ports.
What does the "slow-closing design" do?
The slow-closing mechanism deliberately delays the valve shutting completely off. This prevents water hammer, which is a destructive shockwave that occurs when fast-moving water is abruptly stopped, potentially shattering PVC pipes.
Is this a battery-operated or hardwired valve?
The Irritrol 700 Series comes with a standard 24V AC solenoid. It must be hardwired to an indoor or outdoor AC-powered irrigation controller and will not work with battery-operated DC timers.
Why is mid-May the right time to upgrade to an UltraFlow valve?
As mid-May arrives and summer watering ramps up, neighborhood water pressure often drops due to high demand. Installing the low-friction UltraFlow valve now ensures your system squeezes every drop of available pressure out of the municipal line.
If you noticed your rotors or large drip zones struggling to pop up or reach their full radius last summer, upgrading to this straight-through design before the extreme heat hits is a highly effective solution.
Before purchasing, please verify your system requirements:
Ensure a professional, commercial-grade installation with these essential accessories:
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