Need to install non-return valve at the apartment using central heating system but do not need to install at the apartment using individual heating system.

The feature of "Sense Plus"

Let's start fresh morning with "Sense Plus"
Technology makes progress rapidly and every day. Forget just shower heads which have no any functions. Now, let's start good morning with "Sense Plus" designed by high technology for human body with modern sense.

There is a great effect of saving water.
when you put it down to the bottom or incline it below levelness, water stops automatically. It gives you economic benefit.