The NDS Filter/Pressure Regulator Unit (SKU: FPR17) is a compact, all-in-one sprinkler-to-drip conversion fitting designed to thread directly onto a standard 1/2" MPT riser — replacing virtually any pop-up spray head from any major manufacturer. In one simple swap, you eliminate the high-output spray head and gain a properly filtered, pressure-regulated starting point for a drip irrigation zone.
At the heart of this unit is a built-in 30 PSI pressure regulator that steps your system pressure down to drip-compatible levels, protecting emitters and dripline from pressure fluctuations that cause uneven watering or premature failure. A removable 150-mesh screen filter catches particulates before they reach your emitters, keeping the system running cleanly without a separate inline filter. The unit passes up to 300 GPH and accepts up to 60 PSI at the inlet.
Two Smart Loc™ swivel outlets on the universal adapter connect to multiple sizes of poly tubing and dripline. The outlets rotate a full 360°, preventing kinking or bending as you route tubing in any direction. An included end cap lets you close off one outlet if your layout only requires a single run. The filter/regulator body and adapter are constructed of ABS; the filter screen and mesh are polypropylene for corrosion resistance.
This unit is the same component at the core of DripWorks' full Sprinkler-to-Drip Conversion Kits. If you're converting multiple heads, you can also pair it with our poly tubing and drip emitters to build out each zone affordably head by head.
| Specification | Details |
|---|---|
| DripWorks SKU | FPR17 |
| Manufacturer Part Number | NDS FR2 17-710 |
| Inlet Size & Thread | 1/2" FPT (Female Pipe Thread) — installs on 1/2" MPT riser |
| Outlets | Two Smart Loc™ swivel outlets (360° rotation) for poly tubing & dripline of multiple sizes |
| End Cap | Included — closes off one outlet when single-line layout is preferred |
| Regulated Output Pressure | 30 PSI |
| Maximum Inlet Pressure | 60 PSI |
| Flow Rate | 300 GPH (max) |
| Filter Mesh Size | 150 Mesh (removable screen) |
| Body / Adapter Material | ABS |
| Filter & Mesh Material | Polypropylene |
| Compatibility | Replaces all major manufacturers' 1/2" spray heads |
| Brand | NDS |
What does this unit replace?
The FPR17 screws directly onto any standard 1/2" MPT (male pipe thread) riser and is designed to replace virtually any pop-up spray head from any major manufacturer — Hunter, Rain Bird, Orbit, Toro, and others. Once installed, it serves as the starting point for a drip irrigation zone fed from that riser position.
Does this work with 3/4" risers?
No — this unit has a 1/2" FPT inlet and is designed for 1/2" risers. If your riser is 3/4", you can use a 3/4" x 1/2" threaded reducing coupler and a 1/2" riser nipple to adapt down before installing this unit.
Why do I need a pressure regulator for drip irrigation?
Most residential irrigation systems run at 40–80 PSI — far too high for drip emitters, which are designed to operate at 15–30 PSI. Without regulation, excess pressure can pop emitters off tubing, cause uneven flow rates, and dramatically shorten the life of your drip components. The built-in 30 PSI regulator in this unit brings the pressure down to the ideal range for drip without any additional hardware.
Why is there a built-in filter if my main line is already filtered?
Even if you have a filter at your backflow preventer or main line, particulates can accumulate inside the lateral pipe between zones. The 150-mesh screen filter in this unit provides a final line of defense right before the water enters your drip tubing, catching any fine sediment or debris that could clog your emitters. The filter is removable for easy cleaning.
What kind of tubing connects to the Smart Loc™ outlets?
The Smart Loc™ swivel outlets accept a range of poly tubing and dripline sizes. From those outlets you can run standard 1/2" poly tubing as a supply line, then branch off to drip emitters or 1/4" soaker dripline for individual plants. The outlets rotate 360° to allow routing in any direction without kinking.
Can I use both outlets at the same time?
Yes. Both Smart Loc™ swivel outlets can be active simultaneously, allowing you to run drip lines in two directions from the same riser. This is especially useful when converting a sprinkler head located in the center of a bed — you can send tubing left and right from a single connection point. If you only need one outlet, use the included end cap to seal the other.
Does this unit work with an existing irrigation timer or controller?
Yes. This conversion unit doesn't change how your irrigation zones are controlled. Your existing timer or controller and zone valves continue to operate as before — you're simply replacing the spray head at each riser with this drip-ready fitting instead.
Is this the same as the kits DripWorks sells for full zone conversions?
This unit is the core filtration and regulation component used in DripWorks' full sprinkler-to-drip conversion kits. If you need to convert an entire zone from scratch and want all the tubing, emitters, and fittings included, those kits are the most convenient option. The FPR17 is ideal if you're building a custom setup head by head or replacing a single conversion unit.
Before you install, verify the following:
Pair this filter/regulator unit with these essential components for a complete drip zone:
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