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How to fit a hose water meter

Updated: 22 October 2026

The meter is in your hand, the outside tap is dry, and you want litres on the screen without a spray from the first joint. How to fit a hose water meter is the order of that job: check the thread, seat the washer, follow the arrow, switch units, then prove one known volume. Which listing to buy sits on the [garden water meter comparison](/hub/garden-supplies/garden-water-meter). This page assumes a click-on or screw-on hose body, not a cut into 15 mm pipe. The Products Compared editorial team used the amazon.co.uk files and public UK fitting notes dated 19 October 2026. A qualifying purchase can earn a commission at no extra cost to you.

The meter is in your hand, the outside tap is dry, and you want litres on the screen without a spray from the first joint.

Our top picks

RESTMO RESTMO brass hose meter

Best overall

RESTMO RESTMO brass hose meter
8.4/10about £26.99
View offer
Shrivee Shrivee brass-inlet hose meter

Rank 2

Shrivee Shrivee brass-inlet hose meter
6.9/10about £28.87
View offer
RESTMO RESTMO meter with tap adaptors

Best value

RESTMO RESTMO meter with tap adaptors
7.7/10about £21.99
View offer
On this page
  1. 1.Before the washer goes in
  2. 2.Arrow, washer, and how hard to turn
  3. 3.Litres, then one known volume
  4. 4.Battery bay and the hose end

Before the washer goes in

Identify the tap first. Hozelock’s common outdoor connector is 1/2 inch and 3/4 inch BSP. A listing that only says 3/4 inch or faucet and hose thread may still be US garden-hose thread. RESTMO brass B0GCLLWZF9 names brass ends without BSP. The adaptor RESTMO B0DSZMTVS2 prints 3/4 to 1/2 inch parts in the bullet, and a UK review still called the thread US GHT. If the first half-turn feels wrong, stop. Cross-threading a plastic nut costs more than an adaptor. WaterSafe expects an outside tap to have a double check valve already. A temporary use ban under Water Industry Act 1991 section 76 can prohibit garden watering by hosepipe; Ofwat cites a fine up to £1,000. A meter is not an exception. If your body is the DEWIN 15 mm dial, this hose sequence does not apply. Call a competent person for the pipe joint and read hose water meter or inline water meter.

Arrow, washer, and how hard to turn

Seat the washer so it sits flat in the recess. Shrivee and Insoma bullets in this folder say to follow the arrow, with the meter between tap and hose and the arrow pointing away from the tap. Hand-tighten until the joint stops weeping, then add a small quarter turn if the maker allows it. Do not crush the washer with pliers. A UK review of B0DSZMTVS2 reports a plastic nut that sheared when forced. That is the stop signal. RESTMO support language for basic LCD meters is hand-tight plus a quarter turn. If the impeller whistles once the flow is on, that is a noise some RESTMO brass reviewers describe, not a reason to overtighten. Put a hose timer downstream of the meter if you use one: tap, meter, timer, hose.
RESTMO RESTMO brass hose meter

Testsieger

RESTMO RESTMO brass hose meter
8.4/10about £26.99
View offer

Litres, then one known volume

Switch units before you trust a season total. Several RESTMO bullets say a long press in flow mode flips US gallons and litres; a long press in other modes resets. Shrivee says litres or gallons on a short press. RainPoint’s ICS518 guide for another model uses about two seconds on the flow button. Do not copy that sequence onto every ASIN. The RESTMO 360° panel B0CSM8G644 has UK reviews that never found litres even when the bullet promised them, so verify on your unit. A US gallon is about 3.785 litres, and UK bills use cubic metres (1,000 litres). Fill a marked five-litre watering can, write both numbers down, and decide whether the error is acceptable for a private notebook. These listings are not trade-approved meters under the Measuring Instruments Regulations 2016. Allowance rules stay on garden water meter sewerage allowance.

Battery bay and the hose end

Change or seat the cell with dry hands. RESTMO brass notes a dry battery tray; several listings name a CR2032. UK reviews on plastic RESTMO bodies describe water in the housing and blank screens after months outdoors. Take the meter indoors when frost is forecast. Keep the hose end out of the pond while filling so dirty water cannot siphon back toward the tap. If the plastic body cracks on a live supply, or you need to cut into pipe for a permanent branch meter, stop and call a plumber. Choosing which LCD listing fits your tap is on the garden water meter buying guide.

Common questions

Which end goes on the tap?
The inlet faces the tap, with the flow arrow pointing toward the hose. Shrivee and Insoma state that direction in the bullet. If the arrow is missing, do not guess. Check the manual for that model before you open the tap fully.
How tight is tight enough?
Hand-tight until dry, then a small further turn if the maker allows it. Stop when a plastic nut starts to twist or cream. A UK review of the adaptor RESTMO reports a sheared nut after forcing the joint.
How do I switch to litres?
Use the sequence printed for that ASIN. RESTMO often uses a long press in flow mode; Shrivee uses a short press. Confirm with a watering can. Do not assume every brand shares one button hold time.
What if the thread will not seal?
Back off, check the washer, and confirm BSP versus US garden-hose thread. An adaptor is cheaper than a cracked body. RESTMO Bluetooth reviews needed a separate adaptor before the joint held.
Can I leave it out in the rain?
IPX5 or IPX6 claims cover jets, not a flooded case or frost. Take the meter indoors in cold weather. Dry the battery bay before you close the cover.
Where does a hose timer sit?
Tap, then meter, then timer, then hose. That keeps the counter on the full flow and matches the order used in third-party hose-meter guides.
How do I check it with a watering can?
Fill a known five-litre can, compare the screen, and write both figures down. One check is a start; it is not a lab certificate. UK jug tests in the RESTMO files both match and miss.
When do I stop and call a plumber?
When you need to cut into pipe, when the outside tap has no double check valve, when the body has cracked on a live supply, or when a company must approve a permanent sub-meter location.

Related pages

Best garden water meter

Garden water meter

Garden water meter buying guide: litres and thread

Hose or inline garden water meter: which one to buy

Garden water meter sewerage allowance, company rules

Sources

Public UK sources for this comparison. Prices, stars and review counts are the amazon.co.uk listings in this set. Page updated 22 October 2026.

  1. Ofwat: metering (retrieved 22 October 2026)
  2. Ofwat: temporary use bans (retrieved 22 October 2026)
  3. Water Industry Act 1991, section 76 (retrieved 22 October 2026)
  4. Measuring Instruments Regulations 2016, Schedule 6 (retrieved 22 October 2026)
  5. WaterSafe: outside taps (retrieved 22 October 2026)
  6. Hozelock: outdoor tap connector (retrieved 22 October 2026)
  7. Anglian Water: garden water use (retrieved 22 October 2026)
  8. Thames Water: wastewater abatement (retrieved 22 October 2026)