Hunter MP Rotator GPM Chart and Precipitation Rates

Hunter MP Rotator

Hunter MP Rotator GPM Chart and Precipitation Rates

Flow, radius, and precipitation for every MP Rotator nozzle and arc at 40 PSI. The numbers you need to size a zone and set a runtime.

MP Rotator GPM and precipitation rate

A Hunter MP Rotator nozzle waters a zone through multi-stream rotation, not a single fixed fan. Two numbers size the zone. Flow (GPM at design pressure) sets how much of the lateral's hydraulic budget each head uses. Precipitation rate (inches per hour) sets the runtime needed to deliver a target depth. Hunter publishes both at 40 PSI dynamic at the nozzle, the design point for the whole family.

Matched precipitation is the defining feature of the line. Every nozzle in a family lays down the same depth of water per hour, regardless of arc or radius. A 90 degree corner nozzle and a 360 degree island nozzle on the same zone water at the same rate on the ground they cover. That is why MP Rotators are the standard answer for mixed-arc zones, and why a single runtime works across the whole zone. Browse the full line on the Rotary Nozzles category.

Never mix MP800SR with standard MP Rotators

The standard families (MP1000, MP2000, MP3000) share a matched rate near 0.4 in/hr. The short-radius MP800SR runs near 0.8 in/hr, twice the rate, because the same flow lands on less area. Mix the two on one zone and a single runtime will under-water the standards or over-water the MP800SRs.

GPM chart

MP Rotator chart at 40 PSI

Radius and flow are at full radius (no radius-adjustment reduction). Precipitation is shown for both head-to-head square layout (HS = radius) and triangular layout (equilateral, HS = radius). Triangular spacing reads higher because each head covers less area. Source: Hunter Industries MP Rotator performance data, cross-referenced against the Nelson Irrigation MP Rotator Application Guide.

Family	Arc	Radius (ft)	Flow (GPM)	Precip square (in/hr)	Precip triangular (in/hr)
MP800SR	90°	10	0.23	0.83	0.96
MP800SR	180°	10	0.42	0.81	0.93
MP800SR	210°	10	0.43	0.81	0.91
MP800SR	360°	10	0.78	0.79	0.91
MP1000	90°	14	0.19	0.39	0.45
MP1000	180°	14	0.37	0.39	0.45
MP1000	360°	14	0.75	0.39	0.46
MP2000	90°	20	0.40	0.39	0.44
MP2000	180°	19	0.74	0.39	0.45
MP2000	210°	19	0.86	0.39	0.45
MP2000	270°	19	1.10	0.39	0.45
MP2000	360°	19	1.47	0.39	0.45
MP3000	90°	30	0.86	0.37	0.43
MP3000	180°	30	1.82	0.39	0.45
MP3000	210°	30	2.12	0.39	0.45
MP3000	270°	30	2.73	0.39	0.45
MP3000	360°	30	3.64	0.39	0.45
MP Corner	45°	14	0.19	0.40	0.45
MP Corner	90°	14	0.39	0.40	0.45
MP Corner	105°	14	0.45	0.40	0.45

Radius ranges by family: MP800SR 6 to 12 ft, MP1000 8 to 15 ft, MP2000 13 to 21 ft, MP3000 22 to 30 ft, MP Corner 8 to 15 ft wedge. Hunter also publishes data at 25, 30, 35, 45, 50, and 55 PSI in the same chart. The operating range is 30 to 55 PSI. Outside it, stream carry degrades. To run a family at its minimum radius, regulate to 30 PSI with a PRS30 body. Everywhere else, 40 PSI on a PRS40 is the design pairing.

How to size a zone

Three numbers turn the chart into a working zone design.

Add up the GPM. Sum the Flow column for every nozzle, picking the row that matches each head's arc. Four MP2000-180 edges plus two MP2000-90 corners draw 4 x 0.74 + 2 x 0.40 = 3.76 GPM. Check that against the lateral and valve capacity. If you are over budget, drop a nozzle family or reduce arcs.
Confirm the precipitation rate. Read the Precip column. A standard MP zone (any mix of MP1000, MP2000, MP3000) runs near 0.4 in/hr regardless of arc. An MP800SR zone runs near 0.8 in/hr. Use the square or triangular value to match your layout. Triangular is preferred when geometry allows, for higher distribution uniformity.
Set the runtime. Target depth divided by precipitation rate equals minutes. A 0.5-inch event on a standard MP zone: 0.5 / 0.4 = 1.25 hours = 75 minutes. Same depth on an MP800SR zone: 0.5 / 0.8 = 0.625 hours, about 38 minutes. Split into short cycles if you see runoff on slopes or compacted soil.

The matched-precipitation lever

If a row's GPM pushes the zone over budget, you can drop one head's arc and its GPM without touching the runtime calculation. The remaining heads still water at the same rate. Fixed-spray zones do not have that lever.

MP Corner precipitation values

Hunter does not publish per-arc precipitation cells for MP Corner. The wedge geometry breaks the standard head-spacing calculation. The 0.40 / 0.45 in/hr values shown are the family-matched rate, the value at which an MP Corner waters in unison with adjacent MP1000, MP2000, and MP3000 standards on the same zone. The radius and GPM cells are verbatim from Hunter's published MP Corner chart.

Nozzle chart

MP Rotator nozzles, by family

Representative female-thread SKUs from each family, all in stock at Total Sprinkler. Male-thread (HT) variants and the 210 to 270 degree models exist for each standard family.

Family / arc	Color	SKU
MP-800SR-90 (90° to 210°)	Gray + orange	HUN-58-1553
MP-800SR-360	Gray + lime	HUN-58-1554
MP-1000-90 (90° to 210°)	Maroon	HUN-58-0015
MP-1000-360	Olive	HUN-58-0014
MP-2000-90 (90° to 210°)	Black	HUN-58-0017
MP-2000-360	Red	HUN-58-1203
MP-3000-90 (90° to 210°)	Blue	HUN-58-0020
MP-3000-360	Gray	HUN-58-0019
MP Corner (45° to 105°, male thread)	Turquoise	HUN-58-1212

See the Rotary Nozzles category for the complete in-stock list, including HT and mid-arc models. The MP Rotator's 40 PSI design pressure is what a pressure-regulated PRS40 spray body delivers. PRS30 bodies regulate to 30 PSI and are reserved for MP800SR zones at minimum radius.

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MP800SR, MP1000, MP2000, MP3000, and MP Corner nozzles in stock, plus the PRS40 bodies and adjustment tool that pair with them.

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