Pneumatic solenoid valve
Model: Q2HD-25Z (1/2“ , 3/4” , 1″ , 1 1/2“ , 2” size) — sometimes marketed in the spec sheet as Q2HZ-25Z. Body material: Brass (single acting pilot-operated valve, brass construction). Working pressure: Up to about 10 bar (≈ 145 psi) as listed for the Q2HD-25Z version. Multiple voltage variants supported (12 V DC, 24 V DC, 220 V AC) depending on coil version.