Pneumatic switch with Mechanical push button for panel operation-spring. Type: AI. Tube diam. 4. Ambient temperature: -10…+90°С. Commutation system: poppet. Seals: NBR. Spool: nickel-plated brass. Max pressure: 10 bar. Nominal flow rate: 70 NI/min, nominal bore:2,5 mm. Valve bode: zamak. Tube diam. 4.