The K-Rain RN200-ADJ is a fully adjustable rotary nozzle designed for medium-flow irrigation zones, delivering water across a throw radius of 16 to 19 feet with an arc that adjusts continuously from 80° to 360° — entirely by hand, with no tools needed. This means a single nozzle SKU covers every arc shape in that distance range, from tight corner wedges to full-circle coverage, simplifying your parts inventory and speeding up installation and adjustments in the field.
Like all K-Rain fully adjustable rotary nozzles, the RN200-ADJ uses multiple stream technology that produces larger water droplets at a slower application rate than conventional fixed spray nozzles. This low precipitation rate reduces surface runoff and improves soil absorption — particularly useful on slopes, compacted soils, or clay-heavy ground. K-Rain rates these nozzles at up to 30% less water usage compared to standard sprays, and they are a recognized water conservation component eligible for rebates and incentives in many areas. The nozzle also features a patented radius adjustment (flow control) that allows you to reduce the throw distance by up to 30% without changing nozzles, a double pop-up system for superior dirt tolerance, and viscous dampening that helps maintain consistent rotation speed across varying pressures. Matched precipitation rates across all arc settings and distances ensure uniform water distribution throughout the zone.
The RN200-ADJ has a female thread (FPT) inlet and is a direct replacement for any existing female thread nozzle on a pop-up spray body. To connect it to a 1/2" MPT pipe connection, use the POPNA adapter. K-Rain also offers this nozzle in two other distance ranges — a low-flow model for shorter distances and a high-flow model for larger zones. Browse all options in our rotary nozzle category, or pair this nozzle with a compatible pop-up spray body.
This product qualifies for a rebate through certain Bay Area water districts. Click here to see if your local water district is participating.
| Specification | Details |
|---|---|
| SKU | MKRR20 |
| Manufacturer Part No. | RN200-ADJ |
| Flow Category | Medium Flow |
| Throw Radius | 16' to 19' (radius reducible up to 30% via patented flow control) |
| Adjustable Arc | 80° to 360° |
| Flow Rate | 0.40 – 1.49 GPM (varies with arc angle and pressure) |
| Recommended Operating Pressure | 40 PSI |
| Operating Pressure Range | 25 – 50 PSI |
| Inlet Type | Female Thread (FPT) – replaces all female thread nozzles |
| Arc Adjustment | Hand-adjustable, no tools needed; adjustable wet or dry; visual left start & right stop |
| Pop-Up System | Double pop-up – superior dirt tolerance |
| Precipitation Rate | Low; matched across all arc settings and distances |
| Stream Technology | Multiple streams – improved wind resistance; large droplets |
| Dampening | Viscous dampening – consistent rotation speed across varying pressures and flow rates |
| Filter | Large built-in filter – prolongs product life |
| Available Distance Models | 13'–15' (Low Flow), 16'–19' (Medium Flow), 20'–30' (High Flow) |
| Rebate Eligible | Yes – select Bay Area water districts and other local conservation programs |
| Brand | K-Rain Manufacturing |
What does "fully adjustable" mean on the RN200-ADJ?
The arc can be set to any angle between 80° and 360° — continuously, without stopping at preset increments. You simply rotate the adjustment collar by hand to align the visual left-start and right-stop markers with your desired coverage area. The arc can be adjusted whether the system is running (wet) or off (dry), making it easy to dial in coverage during or after installation.
How does this nozzle differ from a standard fixed spray nozzle?
A conventional spray nozzle releases water in a fast-moving fan pattern that can cause misting, wind drift, and runoff — especially on slopes or compacted soils. The RN200-ADJ uses multiple rotating streams that apply water slowly with larger droplets. This lower precipitation rate gives soil more time to absorb water, reducing runoff. K-Rain rates this nozzle at up to 30% less water usage compared to standard spray heads under comparable conditions.
What spray body does this nozzle fit?
The RN200-ADJ has a female thread (FPT) inlet and is a direct replacement for any existing female thread nozzle on a standard pop-up spray body. To mount it on a 1/2" MPT (male pipe thread) connection, use the POPNA adapter. Browse compatible spray bodies at DripWorks.
What is the recommended operating pressure?
K-Rain recommends operating the RN200-ADJ at 40 PSI, with an acceptable operating range of 25–50 PSI. If your system pressure exceeds 50 PSI, use a pressure regulator to bring it within range and protect the nozzle.
Can I reduce the throw radius without changing nozzles?
Yes. The RN200-ADJ includes a patented radius adjustment (flow control) that allows you to reduce the throw distance by up to 30% from its maximum. This is useful for trimming coverage back from hardscapes, fences, or building foundations without needing a different nozzle.
What is the difference between the three RN model sizes?
All three models share the same fully adjustable 80°–360° arc, no-tool adjustment, and design features. They differ in throw distance and flow rate: the low-flow model covers 13'–15', the RN200-ADJ (medium flow) covers 16'–19', and the high-flow model covers 20'–30'. For best results, use only one model size per zone so that precipitation rates match across all heads.
Is this nozzle eligible for water conservation rebates?
Yes. K-Rain fully adjustable rotary nozzles are recognized water conservation components eligible for rebates and incentives in many areas. Bay Area customers can check eligibility at the BAWSCA Droplet Portal. Check with your local water district for other available programs.
Why does rotation speed stay consistent even when pressure fluctuates?
The nozzle uses viscous dampening technology, which helps maintain a consistent application speed across varying flow rates and pressures. This contributes to uniform water distribution even when pressure conditions differ across zones in the same system.
Will I need to adjust my irrigation run times when switching to this nozzle?
Yes. Because the RN200-ADJ has a lower precipitation rate than conventional spray nozzles, zones will need longer run times to deliver the same depth of water. If you are using a smart controller, look for a rotary nozzle or MP Rotator precipitation rate setting to ensure accurate scheduling. Browse irrigation timers and controllers at DripWorks.
Before you install, verify the following:
Pair the RN200-ADJ with these components for a complete, properly functioning sprinkler system:
Mar 17th 2026
Mar 16th 2026
Mar 12th 2026
Mar 11th 2026
