Hunter Industries - The Irrigation Innovators
I-25/31 Specifications
I-25/31 Plus MODELS
I-25, I-31* – 3 1/2" (9 cm) Commercial duty rotor
I-25 HS, I-31 HS* – 3 1/2" (9 cm) High-speed commercial duty rotor
I-25-6P, I-31-6P* – 5 1/2" (14 cm) Commercial duty rotor
I-25-6P HS, I-31-6P HS* – 5 1/2" (14 cm) High-speed commercial duty rotor
* metric model number (bsp threads)

DIMENSIONS
• Overall height:
I-25, I-31, I-25 HS, I-31 HS – 7 7⁄8" (20 cm)
I-25-6P, I-31-6P, I-25-6P HS, I-31-6P HS – 10 1/4" (26 cm)
• Female inlet: 1" NPT or BSP
• Exposed diameter: 1 7⁄8" (5 cm)

OPERATING SPECIFICATIONS
• Discharge rate: 3.8 to 31.5 GPM (0.86 to 7.16 m3/hr; 14.4 to 119.2 l/min)
• Radius for I-25, I-31, I-25-6P, I-31-6P: 40' to 71' (12.2 to 21.6 m)
• Radius for I-25, I-31 HS, I-25-6P HS, I-31-6P HS: 37' to 67' (11.3 to 20.4 m)
• Recommended pressure range: 40 to 100 PSI (2.8 to 6.9 bars; 275 to 689 kPa)
• Operating pressure range: 40 to 100 PSI (2.8 to 6.9 bars; 275 to 689 kPa)
• Precipitation rates: approximately .23" to .57" (6 to 14 mm) per hour
• Nozzle trajectory: 25˚

Note: To ensure optimum nozzle performance, the rotor should be operated in the "Recommended pressure range." The sprinkler will work normally when used in the "Operating pressure range", but nozzle performance may be reduced.

OPTIONS AVAILABLE
• For quick, light wetdowns of sports fields or any areas that require dust control, Hunter offers the high-speed version I-25/31 HS that cuts full circle rotation time from three minutes down to one. High-speed model I-42/43 also available.
• Reclaimed water cover
• Factory-installed nozzles
SPECIFICATION GUIDE
EXAMPLE: I-25 - ADS - 25
MODEL
I-25, I-31* = 3 1/2" Pop-up		 FEATURES
ADV, 36V, ADS, 36S, ARV, 3RV, ARS, 3RS, ADSHS, 36SHS		 OPTIONS
XX = Standard Set of 5 Nozzles
04 – 28 = Factory-Installed Nozzle Number
I-25-6P, I-31-6P* = 5 1/2" Pop-up
* Metric Model Number (BSP Threaded Inlet)		 ADV, 36V, ADS, 36S, ARV, 3RV, ARS, 3RS, ADSHS, 36SHS
Key to Features:
ADV = Adjustable Arc with Check Valve
36V = Full-Circle with Check Valve
ADS = Adjustable Arc, Stainless Steel Riser, with Check Valve
36S = Full-Circle, Stainless Steel Riser, with Check Valve
ARV = Adjustable Arc, Reclaimed Water, with Check Valve
3RV = Full-Circle, Reclaimed Water, with Check Valve
ARS = Adjustable Arc, Reclaimed Water, Stainless Steel Riser, with Check Valve
3RS = Full-Circle, Reclaimed Water, Stainless Steel Riser, with Check Valve
ADSHS = ADS High-Speed Version
36SHS = 36S High-Speed Version
 I-25/31 Family of Rotary Sprinklers