Coming Soon - BWT ES Echo Cordless Robotic Pool Cleaner - Pools to 15m

Name: Coming Soon - BWT ES Echo Cordless Robotic Pool Cleaner - Pools to 15m
Brand: BWT
Price: 1299.00 AUD
Availability: InStock

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$1,299.00

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BWT ES Echo Cordless Robotic Pool Cleaner

Cordless, app controlled and light. SmartPark wall-side retrieval, 250 lpm suction and a 4.8L filter basket, for pools up to 15m.

Physically Stocked, unlike most 'drop-shipping' websites.
Shipped from VIC, NSW, QLD, WA

The ES Echo is BWT's mid-range cordless robot. The feature that earns its keep day to day is SmartPark - when the cycle ends or the battery runs low, the robot drives itself up to the nearest wall and parks at the waterline, so you are not fishing around the deep end with a pole to get it out.

A single 4.8L basket carries both 180 and 80 micron media, so it handles leaf litter and fine dust without a basket swap.

Key Features

Wi-Fi and Bluetooth with app
SmartPark retrieval system - parks at the wall for easy lifting
Suction rate - 15,000 litres per hour, 250 lpm
2 to 3 hour runtime from a 7800mAh battery
3 to 4 hour charge
Programming via the app or the robot control panel
Three cleaning modes - floor only, full clean (floor, walls and waterline), walls and waterline only
4.8 L single basket filtration - 180 and 80 micron
Gyroscope and ultrasonic navigation

Specifications

Suits pools to: 15m
Power: cordless, 7800mAh rechargeable battery
Cleaning cycles: 1.5 / 2 / 2.5 hour plus ECO - four modes
Brushes: PVC and rubber
Filtration: single basket, 180 micron
Weight: 7.8kg

Control Panel

Power button - cycles through floor, floor and walls, and walls and waterline
Battery status - three lights 67 to 100 percent, two lights 34 to 66 percent, one light 1 to 33 percent
Flashing - charging in progress

Warranty

2 years

Note: Charge the battery fully before first use, rinse the basket after every clean, and store the unit out of direct sunlight. We carry more spare parts than anyone.

Manufacturer Brochures, Manuals & Part Numbers

Need specifications, spare part numbers or more product information? See the manufacturer documents:BWT ES Echo Robot Brochure

To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.

This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.

Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.

Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.

Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:

Imperial Name	Metric Name	Pipe Diameter (OD)
1/2"	15mm	~21.2–21.5 mm
3/4"	20mm	~26.6–26.9 mm
1"	25 mm	~33.4–33.7 mm
1.5"	40 mm	~48.1–48.4 mm
2"	50 mm	~60.2–60.8 mm
2.5"	65 mm	~75.2–75.5 mm

To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions^1.

º Internal diameters vary slightly by manufacturer and class.
¹ Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.

Understanding Plumbing Sizes & Nominal Measurements

Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.

Quick example: A 2" / 50 mm fitting is named for the pipe it connects to, but the pipe’s actual outside diameter (OD) is approx. 60.3 mm (typically ~60.2–60.5 mm in AS/NZ pressure pipe).

Another example: a 2” / 50mm o-ring may refer to a barrel union, etc that suits 50mm pipe. Eg: a “50mm Balboa Gasket” refers to a heater gasket that measure 74mm across, but suits a Balboa barrel union made for 50mm pipe (and the 50mm pipe does not measure 50mm either!)

Why pipe sizes don’t match the measurements

The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.

Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.

How to Measure Pipe Correctly

Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).

Important: For pool/spa work, most plumbing uses Pressure Pipe (AS/NZ standards) — not DWV. Always check OD and the pipe class against your equipment specifications.

Hose & Tube Dimensions

Common flexible hose sizes used in pool/spa systems (approximate IDs).

Imperial Name	Metric Name	Inside Diameter (ID)
3/8"	9–10 mm	~9 mm
3/4"	19 mm	~19 mm

BSP – British Standard Pipe Thread Sizes

BSP thread names are also nominal. The thread OD will not equal the nominal name.

BSP Thread Size Naming	Outside Diameter (mm / inch)	TPI
1/16" BSP	7.7 mm / 0.304"	28
1/8" BSP	9.7 mm / 0.383"	28
1/4" BSP	13.16 mm / 0.518"	19
3/8" BSP	16.66 mm / 0.656"	19
1/2" BSP / 15 mm	20.99 mm / 0.825"	14
5/8" BSP	22.99 mm / 0.902"	14
3/4" BSP / 20 mm	26.44 mm / 1.041"	14
7/8" BSP	30.20 mm / 1.189"	14
1" BSP / 25 mm	33.25 mm / 1.309"	11
1-1/4" BSP	41.91 mm / 1.650"	11
1-1/2" BSP / 40 mm	47.80 mm / 1.882"	11
2" BSP / 50 mm	59.61 mm / 2.347"	11
2-1/4" BSP	65.71 mm / 2.587"	11
2-1/2" BSP	75.18 mm / 2.960"	11
3" BSP	87.88 mm / 3.460"	11
4" BSP	113.03 mm / 4.450"	11
5" BSP	138.43 mm / 5.450"	11
6" BSP	163.83 mm / 6.450"	11

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