Internet #203134126

Model # 3900H

0042206039002

Heavy Duty Pulsating Sprinkler

  • Metal construction for ultimate durability
  • Features a rust-proof design
  • Pulsating deign spreads water around your yard
$ 15 51
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Frequently Bought Together

Frequently Bought Together

Product Overview

  • Metal construction for ultimate durability
  • Features a rust-proof design
  • Pulsating deign spreads water around your yard
The Heavy metal base of the Melnor 3,900H Heavy duty Pulsating Sprinkler provides a steady platform for watering large lawn areas up to 5,600 sq. ft. The rust proof design will provide years of service.
  • Heavy duty pulsating sprinkler
  • Durable all metal sprinkler head
  • Sturdy metal base
  • Rust-proof
  • For outdoor use only
  • California residents see Prop 65 WARNINGS

Product Overview

  • Metal construction for ultimate durability
  • Features a rust-proof design
  • Pulsating deign spreads water around your yard
Model #: 3900H
Internet #: 203134126

The Heavy metal base of the Melnor 3,900H Heavy duty Pulsating Sprinkler provides a steady platform for watering large lawn areas up to 5,600 sq. ft. The rust proof design will provide years of service.

  • Heavy duty pulsating sprinkler
  • Durable all metal sprinkler head
  • Sturdy metal base
  • Rust-proof
  • For outdoor use only
  • California residents see Prop 65 WARNINGS

Info & Guides

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Compare Similar

Compare Similar Products
Brand Melnor Melnor Orbit Genesis
Name Metal Pulsator Head Heavy Duty Pulsating Sprinkler 7,800 sq. ft. Brass Impact Sprinkler on Zinc Spike 65 ft. Customizable Irrigation Kit with Spray Head
Price
$7.44
$15.51
$18.98
$28.86
Ratings (20) (90) (188) (10)
Maximum Spray Distance (ft.) 42.50 42.50 50 3
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Specifications

Dimensions

Coverage Area (sq. ft.)
85
Fitting Size
3/4
Product Depth (in.)
7.91
Product Height (in.)
5.08
Product Width (in.)
8.98

Details

Adjustable
Yes
Base Material
Die-Cast
Commercial / Residential
Residential
Decorative
No
Maximum Pressure (PSI)
100
Maximum Spray Distance (ft.)
42.50
Motion Sensor
No
Returnable
90-Day
Sprinkler Base Type
Stand

Warranty / Certifications

Manufacturer Warranty
Limited 7 year

Specifications

Dimensions

Coverage Area (sq. ft.)
85
Fitting Size
3/4
Product Depth (in.)
7.91
Product Height (in.)
5.08
Product Width (in.)
8.98

Details

Adjustable
Yes
Base Material
Die-Cast
Commercial / Residential
Residential
Decorative
No
Maximum Pressure (PSI)
100
Maximum Spray Distance (ft.)
42.50
Motion Sensor
No
Returnable
90-Day
Sprinkler Base Type
Stand

Warranty / Certifications

Manufacturer Warranty
Limited 7 year

Questions & Answers

Is the base metal or plastic?

Asked by: dl
Metal. Excellent product.
Answered by: Rose
Date published: 2018-07-16

What is the larget and far do they reach?

What is the larget and far do they reach?
Asked by: wagontrain
They might reach a 40 foot diameter but only 30 feet might receive the water you want. They need semi-frequent moving in a standard half acre lot.
Answered by: IowaNeil
Date published: 2018-06-08

what would be a few things to check that would cause sprinkler to not return to its starting point?

Asked by: clay
In my previous post(s), I said I fixed this problem. I did but the diffuser has to hit the head too many times to reverse at either end. That bothered me a lot. I switched to a smaller gauge red hard solderless connector piece of plastic on the diffuser hang down hammer pin. Just pull the metal part out of the connector. I eliminated the heat shrink tubing, the blue connector piece, and used the red one with a tight fit now. I sawed off the end of the hard red plastic flush with the pin end. I wanted 100% reversing without much of a delay at the end of either direction of travel. I finally got 100% reliable reversing. The small coiled spring below the bigger spiral spring up on top was the other problem. One end has an L shaped end that fits into a slot in and under the upper movable mechanism that reverses the head direction. On the other end of this smaller spring has a small "bump" or "raised area" on the straight part of the spring and near the end. I greased this entire mechanism, BTW. It was after I removed (you don't have to do that) the smaller spring that I noticed something. If the spring was in the lower movable mechanism hole and the "bump" was below the hole it fit into, then there would be less tension on that spring and the reversing mechanism. I tried it and now I have a quick self reversing head and at slightly lower pressure than my 40 PSI, but not much lower. 20 PSI is total sales hype. You can change the spring bump with some hemostats or tweezers without disassembly of the mechanism. Here's the assemble order if you remove these two reversing mechanisms and the spring. First on the shaft of the long pin is a small flat washer greased with silicone. Next, the upper greased mechanism with the slot goes on. This is followed by the lower assembly with the spring end hole and then another flat washer. Then, the E clip is replaced. Don't loose it. Put the bump end into the lower assembly hole until the bump area is below the hole. Next, the L end spring goes into the slot in the upper assemble and under it- - under the flat mechanism to hold the spring under tension in place. So, it took me some time but you might need a HARD plastic piece on the diffuser pin and to make sure the small spring bump is placed as described above. I am not sure how this spring position got changed but it happened. I took a piece of flat grocery store pastry clear plastic and made a split washer to go in the bottom gap that the entire rotating head mechanism rests on to reduce friction. Like in another post, mine decayed and was lost. Just slide this piece on and make sure it is a thin piece of plastic. Make sure the head is almost frictionless and not binding at all. Some water will normally leak out here. It will work without this split washer but I remember seeing one on my older 1990s squared off diffuser end. I am not sure how you fix the current egg shaped diffuser end mechanism but this should help steer you in the possible right direction. HD does not carry a replacement washer. Just make one with a drill and use some type of cutting shears on the outside edge. Get rid of any burrs. HTH, Stefan
Answered by: Stefan
Date published: 2018-04-26

What is the gpm flow rate on the pulsating sprinklers at about 50 psi?

What is the gpm flow rate on the pulsating sprinklers at about 50 psi?
Asked by: HalDIY
More than adequate. I run mine at 2 hr. increments to avoid useless runoff.
Answered by: JJ
Date published: 2019-08-26
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