Butterfly valve, Flanged type, body GGG50, shaft AISI 303, disc 1.4408, seat EPDM, double acting pneumatic actuator. Accessories: Solenoid valve 24 V D.C. W/ 2 PCS. Exhaust air flow CONTR. With silencer. Proximity switches PNP 10-30 V. In plastic box. P+F ref. NBN 4-12 GM50 EZ