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Giacomini S.p.A.

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

 consulenza.prodotti@giacomini.com

 +39 0322 923372 - giacomini.com

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Installation

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WARNING. The valve can be installed in any position but it’s important that the actuator is not in an upside-down position or with the power supply cable

coming in from above (to avoid possible problems due to possible condensation).

 NOTE. The two calibrated washers are used to balance the flow rate in the two circuits (from source 1 to user; from source 2 to user).

The two circuits may require different Kv values, so they can be used with two different models of calibrated washer (see table of calibrated washers on page 2).

Calibrated washers can be installed either on the delivery or on the return.

To install the washer it is necessary to manually insert the washer inside the valve fitting and then lock it by inserting the

Seeger ring (supplied with the washer) using a tweezers.

P21S calibrated washers installation

Calibrated washers for R274 and R274N of 1”:

R274Y045, R274Y145, R274Y023, R274Y024, R274Y025

Calibrated washers for R274N of 1/2”:

R274Y033, R274Y133

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Maintenance

Once installed, the valve requires no maintenance. It is however recommended to periodically check the correct operation

of the actuator and check that there are no hydraulic leaks.

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Seeger ring

Gasket

Tail piece

Calibrated washer

Seeger ring

Calibrated washer