Robert Bosch GmbH 0821200206 NSNBC01 Flow Control Valve

0821200206 is a Bosch AVENTICS CC02-AL series two-port pneumatic flow-control valve with throttle-check functionality, designed to meter compressed-air flow while preventing reverse flow in industrial circuits. It features two G 3/8 threaded ports (inlet and outlet) with a 6.6 mm throttle bore, a nominal flow (Qn) of 1196 L/min for the 2→1 direction, and a throttle configuration on the exhaust side (2 > 1). The valve is rated for operating pressures from 0.5 to 10 bar and an ambient/medium temperature range of -10 to 70 °C. Construction highlights include an aluminum, anodized housing, a brass flow-control screw, and NBR seals. Materials and porting are specified for CC02-AL installations, with internal/external thread options for the connection type, enabling reliable metering in compact pneumatic layouts. Applications include precise pneumatic flow regulation in automation equipment, cylinder speed control, and backflow prevention in compact automation circuits where space is at a premium.