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Impact or oscillating sprinkler

Updated: 23 October 2026

The lawn already has a shape, and the sprinkler you own may be wetting a circle you did not ask for. An impact or oscillating sprinkler is a choice about that shape: a clicking jet for an open circle or a wedge, or a sweeping bar for a rectangle you can bound. This page stays on the pattern. Spike versus sled is the buying guide, not a second contest. The eight amazon.co.uk listings are on the [metal sprinkler comparison](/hub/garden-watering/metal-sprinkler). Peter F. compared those cards and public UK guides, read for 21 October 2026. We did not measure a lawn. A qualifying purchase can earn a commission at no extra cost to you.

The lawn already has a shape, and the sprinkler you own may be wetting a circle you did not ask for.

Our top picks

LATERN LATERN spike sprinkler

Best overall

LATERN LATERN spike sprinkler
9.0/10about £9.99
View offer
GRÜNTEK GRÜNTEK oscillating sprinkler

Alternative

GRÜNTEK GRÜNTEK oscillating sprinkler
8.8/10about £49.78
View offer
FANHAO FANHAO impact sled

Alternative

FANHAO FANHAO impact sled
8.6/10about £35.99
View offer
On this page
  1. 1.What each head wets
  2. 2.Noise, metal, and the tap
  3. 3.Listings that say impact and are not
  4. 4.When to pick which

What each head wets

An impact head throws a jet that clicks round. On a full circle you wet a disc. With the trip set, you wet a wedge. The impact sleds here are the two FANHAO models, arc 20 to 360 degrees plus a diffuser pin, and the STYDDI, 20 to 360 degrees with no area printed. The pulsating spikes are the GARDENIX, stated at up to 27 m diameter, and the LATERN ET-A1609, which states a 15 m radius and 530 m² together. The GRÜNTEK is the only oscillator. Sliders and a dial set width, throw, and flow, and the card states up to 462 m² at 2.76 to 8 bar. Easy Garden Irrigation’s guide makes the same split: impact heads for large open areas, an oscillator when the lawn is a rectangle. Whether one position is enough is the sprinkler for a large lawn page. A sector is still a wedge.

Noise, metal, and the tap

An impact head clicks. That tick is the arm resetting, and on a quiet terrace neighbours notice it. The zinc sleds are 650 g, 740 g, and 970 g. UK reviews of the impact sleds say the arm needs pressure before it spins, and that a seal or a slack fitting can stop the reset. The lighter FANHAO states 20 to 80 psi, about 1.4 to 5.5 bar. The GRÜNTEK states a 2.76 bar minimum, which is higher than many outside taps deliver at the hose end. UK reviews say its reach drops when pressure is modest, and that the sweep can stop after a few uses or about a year. Connector names, including the Hozelock miss on the heavier FANHAO, belong on the metal sprinkler buying guide.
LATERN LATERN spike sprinkler

Testsieger

LATERN LATERN spike sprinkler
9.0/10about £9.99
View offer

Listings that say impact and are not

Two spikes in this comparison will not click round, whatever the title suggests. The Winbay at about £7.82 is a twist barrel for fan, cone, or stream. A UK review says it sprays a fixed 360 degree pattern rather than walking. The lighter LATERN at about £9.99 puts impact in the title and fan, cone, or stream in the bullets, with a stated 7 m radius. One review limits practical distance to about 4 m. Both FANHAO style fields say oscillating while the bullets describe impact heads. File the Winbay and the lighter LATERN as twist nozzles, and the FANHAO sleds as impact. A trip pin will not turn a twist spike into a rectangle.

When to pick which

Choose the GRÜNTEK when the lawn is a rectangle you can bound and your tap can meet the stated 2.76 bar minimum. Choose a zinc impact sled, the STYDDI or either FANHAO, when the lawn is open and a circle or a wide wedge matches the grass. Skip the heavier FANHAO if your connectors are standard Hozelock, because that is the review of three units. Skip both patterns if a hosepipe ban covers garden watering. Section 76 of the Water Industry Act 1991 allows that ban locally, and a new head does not lift it. Rectangle and enough pressure means the oscillator. An open lawn and a tap that will click an arm means a zinc impact sled.

Common questions

Which pattern fits a long thin lawn?
A sweeping bar. The GRÜNTEK has sliders for width and throw, so you can shorten the rectangle to the strip. An impact head on a long thin lawn wets a circle or a wedge that spills onto the path or stops short of the far corner. You would move it several times, or accept dry ends, and only if the tap can hold 2.76 bar.
Are impact sprinklers louder?
They click. The arm strikes and resets. The GRÜNTEK has no impact arm, so it does not make that tick. Quieter is not the same as using less water, and this set has no volume test. If the terrace is close to a neighbour’s window, the click is a reason to prefer the bar, provided the lawn is a rectangle and the tap can meet 2.76 bar.
Can I set an impact head to a square?
You can set a sector, which is a wedge, not a square. Collars limit the angle. They do not straighten the near and far edges into a rectangle. A square lawn with paths on two sides is usually an oscillator job, or an impact head you move. Forcing the FANHAO arc to do the square wets the corners late and the middle twice. One position still has to match the grass you paced.
What if my tap is weak?
Neither pattern will match its card. The GRÜNTEK states 2.76 bar as a minimum, and reviews say reach collapses below a good tap. Impact arms in the FANHAO reviews need a lot of pressure before they spin. A twist nozzle such as the Winbay may still throw a fixed spray on a modest tap, and one LATERN review says that lighter spike ran on a low-pressure outside tap, with distance closer to 4 m than to the stated 7 m.
Is the GRÜNTEK all metal?
No. The bullets say a metal base, brass fittings, and a UV-protected ABS body. The material field that only says Metal leaves the ABS out. The zinc sleds, STYDDI and the two FANHAO models, are the all-metal heads. You pay about £49.78 and 875 g for the rectangular sweep, not a solid metal arm. A cleaning pin and filter are in the box because the nozzles block.

Related pages

Best metal sprinkler

Metal sprinkler

Metal sprinkler buying guide: pattern, then the tap

How to set an impact sprinkler: pin, arc, diffuser

Sprinkler for a large lawn: the card versus your tap

Sources

Public UK sources listed in the research digest. amazon.co.uk prices, stars and review counts are the saved listing lines for these eight products. Last reviewed 22 October 2026.

  1. Water Industry Act 1991, section 76 (retrieved 22 October 2026)
  2. Water Use (Temporary Bans) Order 2010 (retrieved 22 October 2026)
  3. Water Fittings Regulations 1999, Schedule 2, paragraph 15 (retrieved 22 October 2026)
  4. GSS Regulations 2008, regulation 17G (retrieved 22 October 2026)
  5. Ofwat, hosepipe bans (retrieved 22 October 2026)
  6. Hozelock, how to measure your tap (retrieved 22 October 2026)
  7. RHS, watering (retrieved 22 October 2026)
  8. RHS, August lawns (retrieved 22 October 2026)
  9. Claber impact metal jet spike, via LBS (retrieved 22 October 2026)
  10. Easy Garden Irrigation, garden skid sprinkler pro (retrieved 22 October 2026)