What is the flow rate for low pressure hot water system (not a combi boiler system)??

I am not sure if this help as I have combi boiler and the flow rate through this is great changes from shower flow to steady flow

What is ACS certification?

Academia constiintei de sine is a French sanitation certification body, which mainly tests plumbing equipment products according to the standards issued by AFNOR (Association Francaise de Normalisation).

Does the 22mm version come with a female to male adaptor as I need a 22mm male version.

Mine came with an adaptor so that it will fit male or female thread

I googled and found out that the tap style i have is: 'bristan - manhattan monobloc kitchen sink mixer - chrome' - will it fit? not sure how to tell.

If there is any threaded end to it you should be able to fit it easily as it comes with several different adapters to fit all sorts of faucets. However I did look at the tap you described and it is hard to say (by just looking at general images) whether there is any part which you can remove (unscrew) and replace with this little gadget.

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Waternymph Dual-Function 2-Flow Faucet Tap Aerator Swivel, ACS Certification, 360-Degree Twist and Rotation Kitchen Sink Aerator with 2 Sprayer - 22mm Female Thread - Chrome Finished(FM22)

Product ID: 47906567

Details

Brand
Waternymph
Finish type
Polished
Material
Chrome
Specification met
energy
Thread size
22mm

💧1.8 GPM dual water flow

🔄360° swivel rotation

⚙️5 adapters for universal fit

Description

💧 Twist, spray, save — the faucet upgrade you didn’t know you needed!

CHROME ELEGANCE - Polished chrome finish adds a sleek, modern touch to your kitchen setup.
DUAL FLOW MAGIC - Switch between a soft bubble stream and a powerful spray to suit every kitchen task.
SEAMLESS 360 SWIVEL - Effortlessly rotate your faucet for ultimate sink coverage and convenience.
ECO SMART WATER SAVING - Cut water usage by 30-70% without sacrificing performance—save money and the planet.
UNIVERSAL FIT ZERO HASSLE - Five versatile adapters ensure compatibility with most standard faucets (20-24mm threads).

The Waternymph Dual-Function Faucet Aerator features a 22mm female thread with five adapters for broad compatibility, a polished chrome finish for style, and a 360-degree swivel for flexible use. It offers two water flow modes at 1.8 GPM, combining efficiency with water savings of up to 70%, certified for energy efficiency.

Specifications

ASIN	B06XRJBSPF
Best Sellers Rank	217,465 in DIY & Tools ( See Top 100 in DIY & Tools ) 534 in Aerators
Brand	Waternymph
Customer Reviews	4.3 4.3 out of 5 stars (886)
Finish	Polished
Flow Rate	1.8 Gallons Per Minute
Manufacturer	Waternymph
Material	Chrome
Model Number	FA-22female-swivel-c
Part Number	FA-22female-swivel-c
Specification Met	energy
Thread Size	22mm
UPC	707427287006

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