Icma 246 | Female pressure reducer

ICMA pressure reducers are devices that reduce and stabilize the incoming pressure from the water supply.
Pressure reducers allow correct use on domestic systems, reducing malfunctions due to external pressure which is
generally high and variable, and extending the life of the system components.

The gearbox operation is based on the balance of two
opposing forces that develop inside it.
The spring produces a thrust towards the opening of the
fluid passage section as opposed to the pressure produced
by the water pressure (Fig.1). The variable compression of
the spring, recovers the pressure variations of the public
water supply.
In this way the two forces cancel each other, keeping the
value of the downstream calibration pressure constant
regardless of the changes in the value of the upstream
pressure.

When opening a water utility, the valve (1) moves
downwards, opening the passage of water, this is due
to the force exerted by the spring on the diaphragm (2)
which in these conditions becomes prevalent with respect
to that exerted by the water.
Increasing the demand for water causes an increase in the
passage of the fluid through the passage section caused
by the decrease in pressure to which the valve is normally
subjected.
The opening of several users causes a pressure drop (Δp)
downstream and a consequent increase in the flow rate
(Q) as shown in fig.2.

When the loads are closed, the downstream pressure
increases until it reaches the value set during the
calibration phase

TECHNICAL DATA
Body: Brass CW617N UNI EN 12165
Internal Components: Brass CW617N UNI EN 12165
Anti-leakage devices: NBR+EPDM
Spring: Stainless steel
Manometer plug caps: PA 66
Manometer plug size: ¼” F

PERFORMANCE
Max upstream pressure: 40 bar
Max. reduction ratio (recommended): 2,5
Downstram setting range: 1 ÷ 6 bar
Production setting: 3 bar
Operating temperature: 5°C ÷ 80 °C
Working fluid: water