Hi, would like to get opinion.

Recentli my contractor did install one way valve upstair bc my water pressure is low at upstair.

After the installation, i notice the meter(Marked red square in picture) keep fluactuating forward and backward even though no usage at that time.Is this normal?
Thank you.


Attached thumbnail(s)

https://video.zig.ht/v/s5tjjt9q5uqbcagj896pue

how does a 1 way valve solve pressure issues?

The 1 way valve is from main pipe bypass the water tank. When there is no water from main pipe, water from tank can be used.

I am interested to understand too how does this work in terms of keeping the pressure up

Ok looks like that is causing the fluctuation problem - why don't just install pump after water tank all problem solved. This 1 way valve serious doesn't make sense at all.

This post has been edited by vin6: Oct 13 2025, 12:04 PM

Hmmm did i get the wrong terminology?Isnt it called 1 way valve?
Anyway the idea was to increase water pressure in bathroom by directing mian water pipe to bathroom.If there is no water from main pipe,water from tank will flow into bathroom.

Sorry for the confucian.

Is it term as check valve?