Callefi Pressure Reducing Valve

Pressure reducing valves are devices that, installed in the private water distribution network, reduce and stabilize the inlet pressure of the public network, which is generally too high and variable for correct use in domestic installations.

The 533. series has been designed for use in small installations, such as apartments, to protect the water heater, where a reduced footprint and absence of operating noise are important.

Características técnicas
Materials: Body: brass EN 12165 CW617N, chrome plated
Lid: PA66GF30
Command rod: EN 12165 anti-dezincification alloy CW602N
Cartridge: POM
Internal components: brass EN 12165 CW617N
Membrane: NBR
Seals: NBR
Filter: stainless steel

Prestações
Max. pressure upstream: 16 bar
Downstream pressure regulation range: 1÷6 bar
Factory setting: 3 bar
Max temperature operating temperature: 40°C
Manometer pressure scale: 0÷10 bar
Fluids for use: water

Ligações
Main connections: 1/2" and 3/4"
Pressure gauge connections: 1/4” F

Princípio de funcionamento
The pressure reducer works based on the balance of two opposing forces:
1 the spring force against opening the passage section.
2 the force of the membrane against closing the passage section.

Funcionamento com consumo
When a faucet is opened, the force of the spring becomes greater than that of the membrane; the obturator moves downwards, opening the passage to the water. The greater the water consumption, the greater the decrease in pressure under the membrane, thus causing a greater passage of fluid through the passage section.

Funcionamento sem consumo
When all taps are closed, the downstream pressure increases, pushing the membrane upwards. In this way, the obturator closes the passage section, keeping the pressure constant at the regulation value. A minimal difference in the force exerted by the membrane, in relation to that exerted by the spring, causes the device to close.