Valvola a sfera Siemens VAI61.32-16

The Siemens VAI61.32-16 ball valve is a gas valve listed under catalogue article 884.322.017 and manufacturer code VAI61.32-16. This item belongs to the broader category of gas valves used in burner and boiler systems. Parts of this type shut off and meter the gas supply to the burner, opening on command from the burner control only when the associated gas pressure switch permits. In premix boilers, a pneumatic gas/air link often ties such a valve to the fan. When selecting valves of this class, key parameters include connection size (typically Rp 1/2" to 2" thread or flanged options), coil voltage (commonly 230 V or 24 V AC/DC), and function (single or double solenoid, slow opening, servo-regulated, or multiblock with integrated filter and regulator). The valve body and coil may be replaceable separately. Common failure modes for such valves are coil burnout, leaking seat, drifting outlet pressure, or a seized servo regulator. When replacing a valve of this type, always verify the connection size and electrical rating against the existing installation, and ensure compatibility with the burner control and gas pressure switch.