5

Giacomini S.p.A.

Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia

 consulenza.prodotti@giacomini.com

 +39 0322 923372 - giacomini.com

1

2

3

4

5

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Components

1

Valve body

2

M4 or M6 (depending on codes) holes for valve fixing

3

F04 - ISO 5211 connection for actuator installation

4

Command stem

5

Calibrated washers with seeger ring



Overpressure protection system

When using the 6-way valve for combined heating/cooling applications (radiant ceilings, fan-coil), the fluid inside the user

circuit may become completely isolated when the valve is in the closed position (no heating or cooling). The pressure of

the trapped fluid inside the user circuit may then increase or decrease due to changes in temperature of the fluid caused

by the room temperature.

The 6-way valve is equipped with integrated protection against overpressure, and is designed to compensate for such

pressure variations.

The upper ball of the valve has a small hole in its interior (ref. A) which maintains the connection of the “usage point” with the

“source 1”, even when the valve is closed (stem position 45°). The combined action of the two balls (upper and lower) prevents

the circulation of fluid when the valve is in the closed position. The overpressure protection system does not compromise

hydraulic separation between the two circuits (source 1 and source 2): the two hydraulic circuits remain separate.

Usage

point

Expansion

vessel

Expansion

vessel

Source 2

Source 1

Usage

point

Expansion

vessel

Expansion

vessel

Source 2

Source 1

A