Comparative Summary: Compact Motorized Valves

The perfect actuator for manifolds and fan coils

Problem: You need to replace a zone valve inside a distribution box full of pipes. There's no room to turn a screwdriver or use a wrench. Traditional valves are too bulky.

Solution: The Comparato Sintesi is designed specifically for this. The valve body is compact and the motor is push-fit. This reduces maintenance time by 50% and allows for zoning even where it seems impossible.

How to identify your Sintesi servo?

If you are replacing an older engine, check the label for this information:
1. Voltage: 230V (domestic use) or 24V (tertiary/safety use).
2. Operating times: Usually 15, 30, or 60 seconds. Choosing the wrong timing can cause water hammer (if too fast) or delays in heating (if too slow).
3. Command Type:
- 2 Points (On/Off): It has power always present and moves when it receives the phase from the thermostat.
- 3 Points (Open/Close): Requires two separate phases for the two movements.

Frequently Asked Questions about Comparato Sintesi

1. Can I mount the Sintesi engine on a Diamant 2000 valve?

No. Although they are both Comparato products, the mechanical connections are different. The Sintesi series has a smaller specific connection than the Diamant series. The motors are not interchangeable between the two series. You must purchase the specific replacement part for the valve body you have installed.

2. How do you detach the motor from the valve body?

It's very simple and requires no tools. On the side or under the servo, you'll find a release button or lever . Hold it down and gently pull the motor toward you. The motor will detach from the brass body. To reassemble it, simply push it in until you hear a click.

3. Does the Sintesi valve reduce the water flow?

Sintesi 2-way valves are full bore, meaning they don't reduce flow when open. This is a major advantage over piston or electrothermal valves, ensuring your radiators or fan coils receive all the hot water they need without pressure loss.