The Antelco Vari-Rotor Sprinkler (sold in a 5-pack) is a compact, full-circle mini sprinkler engineered for precise, adjustable irrigation in garden beds, container groupings, nurseries, and horticultural applications. Where standard fixed-output sprinklers force you to run separate zones, the Vari-Rotor's built-in adjustment valve lets you dial coverage from a tight spot watering down to 0 feet all the way out to a full 25-foot diameter — without changing nozzles or hardware. Flow is similarly adjustable, ranging from 0 to 35 GPH at the turn of a knob.
Designed around Antelco's proven 'C' Frame construction, the Vari-Rotor features a full-flow flipper suspended between two bearings for reliable rotation and excellent distribution uniformity across the entire wetted area. The frame and base are UV-stabilized acetal for long outdoor life, and the nozzle is color-coded black (0.06" max orifice) for easy identification. The 10-32 UNF threaded base installs directly into 1/4" supply tubing, mainline polyethylene tubing, rigid risers and EZ stakes, or a 1/2" threaded adapter — giving you maximum flexibility in how and where you deploy these sprinklers.
| Specification | Details |
|---|---|
| SKU | MVRS-5 |
| Manufacturer Part No. | 20205 (Antelco) |
| Pack Quantity | 5 sprinklers per pack |
| Pattern | Full Circle Only |
| Nozzle Size & Color | 0.06" Max – Black |
| Flow Range | 0 – 35 GPH (adjustable via built-in valve) |
| Pressure Range | 15 – 30 PSI |
| Coverage Diameter | 0 – 25 feet (adjustable) |
| Thread Connection | 10-32 UNF |
| Compatible Fittings | Rigid Risers, EZ Stakes, 1/4" tubing, mainline tubing, 1/2" threaded adapters |
| Frame Material | UV-Stabilized Acetal |
| Base Material | Acetal |
| Flipper Material | Nylon |
| Frame Design | 'C' Frame – full-flow flipper suspended between two bearings |
| Testing | Independently tested by Center for Irrigation Technology, California State University, Fresno |
| Brand | Antelco |
What is the Vari-Rotor Sprinkler used for?
The Vari-Rotor is designed for micro-irrigation in garden beds, container plant groupings, landscapes, and nurseries. Its adjustable built-in valve makes it ideal for areas with mixed plant types or changing water needs — you can reduce output for drought-tolerant plants or open it up fully for thirstier specimens, all without changing hardware.
What is the coverage area?
The Vari-Rotor covers a full-circle pattern with a diameter that is continuously adjustable from 0 to 25 feet, depending on how far the built-in valve is opened and the operating pressure (15–30 PSI). At 30 PSI fully open, maximum diameter is approximately 27 feet.
What's the difference between the Vari-Rotor and the standard Rotor Spray?
The standard Rotor Spray comes in six fixed nozzle sizes (color-coded 0.035" to 0.08") with no in-line adjustment. You select the nozzle for the fixed output you need. The Vari-Rotor uses a single 0.06" max nozzle with a built-in knob valve that lets you dial flow and coverage from zero to maximum at any time — no tools, no nozzle swaps. Choose the standard Rotor Spray when you want predictable, fixed performance across a uniform zone; choose the Vari-Rotor when coverage needs vary or you want one sprinkler to serve multiple scenarios.
How does the Vari-Rotor connect to my irrigation system?
The base has a 10-32 UNF thread, which is the standard micro-irrigation thread used across Antelco and most other micro-sprinkler systems. It threads directly into 1/4" supply tubing, mainline poly tubing, rigid risers or EZ stakes, or a 1/2" threaded adapter. No special tools required.
What operating pressure does this sprinkler require?
The Vari-Rotor is designed to operate between 15 and 30 PSI, making it compatible with most low-pressure drip and micro-irrigation systems. If your supply pressure is higher than 30 PSI, use an inline pressure regulator to bring the system into range and protect the sprinkler from over-pressurization.
Does this sprinkler work with a timer?
Yes. The Vari-Rotor works with any irrigation timer that operates your supply line — battery-powered hose timers, AC-powered multi-zone controllers, or solar timers. Because this is a micro-irrigation-scale sprinkler, it pairs especially well with low-flow timers and valves.
Does it shut off completely?
Yes. The built-in valve adjusts from fully open (max flow and coverage) down to completely closed (zero flow), so individual sprinklers can be shut off without affecting the rest of the line — ideal for customizing coverage within a mixed planting zone.
What pattern does it spray?
The Vari-Rotor is a full-circle pattern only. It is not available in part-circle configurations. If you need adjustable arc coverage, consider a gear-drive rotor or an adjustable micro-spray head.
Can I use this in a greenhouse or inverted position?
The standard Vari-Rotor is intended for upright installation. Antelco makes a separate Inverted Rotor Spray™ model with a khaki-colored flipper and dust cover specifically designed for overhead greenhouse and nursery watering in an inverted position. Contact DripWorks to inquire about availability.
Before you install, verify the following:
Pair your Vari-Rotor Sprinklers with these essential components for a fully functional micro-irrigation system:
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