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Part circle sprinkler: what to match to your lawn

Updated: 23 October 2026

You have an outside tap, a hose, and a lawn that meets a path. A part circle sprinkler lets you water a wedge or a full circle and leave the paving dry, if the arc, the base, and the pressure agree. This page is the filter before the [sector sprinkler comparison](/hub/garden-watering/sector-sprinkler), which holds eight amazon.co.uk listings with prices in GBP. We read those listings and the review notes behind them. We did not run a lab test. By the end you should know whether you want an impact sled, a pattern head on a spike, or a two-head pack. A qualifying purchase can earn a commission at no extra cost to you.

You have an outside tap, a hose, and a lawn that meets a path. A part circle sprinkler lets you water a wedge or a full circle and leave the paving dry, if the arc, the base, and the pressure agree.

Our top picks

Cellfast Cellfast 52-061

Best overall

Cellfast Cellfast 52-061
8.6/10about £16.86
View offer
Grüntek Grüntek 296.000

Best value

Grüntek Grüntek 296.000
8.4/10about £22.78
View offer
FANHAO FANHAO heavy base

Alternative

FANHAO FANHAO heavy base
8.4/10about £37.99
View offer
On this page
  1. 1.What a part-circle sprinkler is for
  2. 2.Impact sled, pattern head, or a spike pack
  3. 3.Pressure, connector, and the area claim
  4. 4.What to leave for the other pages

What a part-circle sprinkler is for

A part circle sprinkler, also sold as a sector sprinkler, throws water across an arc you set, then reverses or swings back. The stops, rings, or dials make that limit. A 360° spinner with no stops is a different tool, and so is a buried rotor. The wet shape is a wedge or a circle from where the head stands. A long rectangle is a poor job for that geometry, which is why sector sprinkler versus oscillating sprinkler is a separate page. Put the head in a corner bed, aim the near stop along the wall, and land the far drops on grass. Grüntek's listing runs from 30° to 360°, both FANHAO sleds from 20° to 360°, and Gardena's UK page for the Comfort 8141-20 states 25° to 360°.

Impact sled, pattern head, or a spike pack

An impact sled is a zinc head on a metal base. The heavier FANHAO base is £37.99 and 970 g. On that model, one UK review says the supplied fitting would not stay on a standard Hozelock connector. The line "up to 5,800 sq ft", about 540 m², is a claim several buyers did not see. A spike suits a border. Grüntek, at £22.78, uses a metal spike and two dials from 30° to 360°, with 4.2 from 4,367 reviews and a repeated stall. Cellfast 52-061, at £16.86, is plastic, and most of its 68 reviews are from outside the UK. Gardena Comfort 8141-20, at £25.55, spins one way when pressure is low. RESTMO at £20.39 is two heads, and a UK review says a second head on the same hose dribbles.
Cellfast Cellfast 52-061

Testsieger

Cellfast Cellfast 52-061
8.6/10about £16.86
View offer

Pressure, connector, and the area claim

Area numbers mislead more often than star ratings. Grüntek says up to 452 m², Cellfast up to 346 m², and Gardena's title 75 to 490 m². None of that is a measurement on a British tap. Gardena UK support says this class starts at about 2.0 bar. Ofwat's guaranteed minimum is seven metres of static head, about 0.7 bar. A company can meet that minimum and the head can still refuse to reverse. Check the connector before you trust the area. Grüntek states a click connector and does not name Hozelock. Cellfast states a 13 mm inlet and no UK click brand. If the hose ends in an AquaStop, click it on with the water off. If the head stalls, use the low-pressure page.

What to leave for the other pages

This filter does not crown a winner. Who should buy the spike, the sled, or the £9.99 head is the best sector sprinkler page. Setting the trip, the stops, and the diffuser is the how-to page linked beside this guide. A temporary use ban is made by your water company. Section 76 of the Water Industry Act 1991 lets an undertaker ban watering a garden with a hosepipe. Thames Water’s notice from 23 July 2026 names sprinklers, and Ofwat describes a fine of up to £1,000. Read the notice for your postcode.

Common questions

Spike or sled for my soil?
Use a spike when the head must sit in a border or on a slope, which is what Grüntek reviewers describe for the metal stake. Use a sled when you want weight on the lawn and no hole in the turf. A thin spike still bends: LATERN reviews include a bent stake in hard ground.
Why do listings quote 452 m² or 5,800 sq ft?
Those are the sellers’ coverage claims, usually at a stated pressure, not the area your tap watered. Grüntek pairs “up to 452 m²” with 4 bar. FANHAO pairs “up to 5,800 sq ft” with 80 psi on the green sled, and buyers report a smaller patch. Treat the number as a ceiling on the box. Walk the wet edge on your own grass before you trust it.
Can I put two heads on one hose?
You can connect them, and the flow usually falls. RESTMO’s listing says coverage drops when several heads share one hose, and a UK review describes a dribble. Grüntek’s bullets claim a series connection, which is not two full patterns. LATERN reviews include pairs that would not run together. Run one head, note the throw, and only then add a second.
Will a brass click fitting lock a Hozelock AquaStop?
Not as a rule. On the heavier FANHAO, a UK review says the supplied fitting would not stay on a standard Hozelock connector. Another review on the same model says the brass quick-lock suited most of their hoses. Grüntek states a click connector without naming Hozelock. Fit yours at the tap, with the water off, and see if it holds before you set the arc.
What should I ignore if a hosepipe ban is on?
Ignore the area claim and the star rating until you have read your company's notice. A ban is set by the undertaker, not for every UK postcode. Thames Water's July 2026 notice names sprinklers, and Ofwat describes a fine of up to £1,000. If the notice covers you, the head stays in the shed.

Related pages

How to set a sector sprinkler

Sector sprinkler

Best sector sprinkler for one job, not every garden

Sprinkler not rotating on low pressure at your tap

Sector sprinkler vs oscillating sprinkler: the shape

Sources

Public UK sources from the research digest. amazon.co.uk prices, stars and review counts are the saved listing lines for these eight products, not a live basket on 21 October 2026. Last reviewed 22 October 2026.

  1. Gardena UK, Comfort full or part circle pulse sprinkler 8141-20 (retrieved 22 October 2026)
  2. Gardena UK support, start-up and maximum pressure for large-area sprinklers (retrieved 22 October 2026)
  3. Ofwat, water pressure (retrieved 22 October 2026)
  4. Flood and Water Management Act 2010, section 36 (retrieved 22 October 2026)
  5. Thames Water, temporary hosepipe ban legal notice (retrieved 22 October 2026)
  6. Ofwat, hosepipe bans and non-essential use bans (retrieved 22 October 2026)
  7. Water Regs UK, hose union taps (retrieved 22 October 2026)
  8. RHS, garden watering methods (retrieved 22 October 2026)