What size riser fits in the bottom, 1/2” or 3/4”?

As one of the Sellers of this item, SprinklerHUT, It is important to note that this spray head has a 1/2 inch inlet. Please do not try to measure the opening with a ruler and consider that to be an accurate measure. Pipe thread is measured very differently, and this spray head along with spray heads from Hunter and Toro and just about every other major manufacturer, are all 1/2 inch inlet. The manufacturers websites are always a great source of information and you can confirm this at any of the manufacturers sites that I just mentioned. We have been asking Amazon to include that very important information in their bullet point descriptions of this product and thus far they are choosing to display other information that in our opinion is not as helpful to the Buyer.

What do you do with the blue screw type thing and the black cap (with a small screw on top of the cap)? How do you install it? What do they do?

Once you install the sprinkler head you need to unscrew the plug that comes installed in the head. Then you need to install what looks like a cap but is actually the part of the sprinkler that directs the water.

Can these set to a 90° angle for corners?

Yes, I have four of them on my garden corners set to 90 degrees.

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Rain Bird 1804VAN 1800 Series Professional 4 Inch Pop Up Sprinkler Head, 4 Pack - Lawn Sprinkler with Adjustable 0-360 Degree Arc Nozzle Pattern, Up to 15 Ft Spray Distance, 1/2 in NPT Threaded Inlet

Rain Bird 1804VAN 1800 Series Professional 4 Inch Pop Up Sprinkler Head, 4 Pack - Lawn Sprinkler with Adjustable 0-360 Degree Arc Nozzle Pattern, Up to 15 Ft Spray Distance, 1/2 in NPT Threaded Inlet

Product ID: 401717862

Details

Brand
Rain Bird
Colour
Black
Item dimensions L x W x H
5.7 x 5.7 x
Material
Stainless
Style
Pop-Up

💧0-360° adjustable arc

📏15 ft spray radius

🔩1/2 in NPT threaded inlet

Description

🌿 Water smarter, not harder — precision irrigation that keeps your lawn envy-worthy!

BUILT TO LAST - Heavy-duty UV and weather-resistant materials with stainless steel spring for flush pop-up every time.
LEAK FREE EFFICIENCY - Patented pressure-activated wiper seal prevents water waste and keeps your system running smooth.
EXTENDED REACH HYDRATION - Reliable spray distance up to 15 feet ensures even watering across your entire lawn or garden.
PRECISION WATERING CONTROL - Dial in exact coverage with a 0-360° adjustable arc—no tools needed, no overspray wasted.
PROFESSIONAL GRADE RELIABILITY - Trusted Rain Bird engineering with 90+ years of irrigation expertise for flawless landscape care.

The Rain Bird 1804VAN 1800 Series is a professional-grade 4-inch pop-up sprinkler head featuring an adjustable 0-360° arc nozzle and up to 15 ft spray distance. Designed with durable, weather-resistant materials and a patented leak-prevention seal, it offers precise, efficient watering for residential and commercial landscapes. Easy to adjust without tools and built for long-term reliability, this 4-pack ensures uniform coverage and water savings, backed by Rain Bird’s 90+ years of irrigation innovation.

Specifications

ASIN	B081LJ593N
Brand	Rain Bird
Brand Name	Rain Bird
Color	Black
Colour	Black
Customer Reviews	4.5 out of 5 stars 992 Reviews
Global Trade Identification Number	00077985097622
Inlet Connection Size	4 Inches
Item Dimensions	5.7 x 5.7 x 15.2 centimeters
Item dimensions L x W x H	5.7 x 5.7 x 15.2 centimeters
Manufacturer	Rain Bird
Manufacturer Part Number	1804VANS-4-1
Material	Stainless Steel
Material Type	Stainless Steel
Maximum Flow Rate	176.71 Cubic Feet Per Minute
Maximum flow rate	176.71 Cubic Feet Per Minute
Number of Items	4
Style	Pop-Up
Style Name	Pop-Up
UPC	077985097622
Unit Count	1.00 Count

Reviews

M**N

Excelente calidad y flujo de agua

De acuerdo a la descripción del producto, todo bien, puede ajustarse el ángulo de apertura

17.09.2026

J**N

Great quality

Great price point

16.06.2025

G**O

Fácil de instalar

Funcional

4.03.2026

J**D

sprinkler pattern

being able to adjust both distance and pattern makes it easy to cover area

29.08.2026

J**A

Rain rain go away

Work great and do the job. Easy to adjust

28.07.2025

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