SMC 10-AR20K-02H-B | 10-AR-B/10-AR K-B Series Clean Room Modular Regulator Body Size 20 1/4 Port With Backflow Function Bracket Mount

The SMC 10-AR20K-02H-B is a clean room specification modular type pressure regulator from the 10-AR-B/10-AR K-B series, designed for precise air pressure control in clean room and contamination-sensitive environments. The "10-" clean series prefix indicates this regulator is assembled with fluorine grease, manufactured in a controlled clean room workshop, and sealed in anti-static double packaging to deliver particle generation grade 1 performance out of the box.

What does the "K" designation mean in the 10-AR20K? The "K" suffix indicates this regulator includes a backflow function, which exhausts downstream air pressure reliably and quickly when the set pressure is reduced or the supply is shut off. This prevents trapped pressure downstream of the regulator, which is important in clean room applications where controlled depressurization protects sensitive pneumatic instruments and prevents uncontrolled exhaust through downstream equipment.

Configured with body size 20, 1/4 inch port connections ("02H"), and bracket mounting ("-B"), this regulator provides precise pressure control for individual work stations, point-of-use air supply regulation, and integration into modular FRL (filter-regulator-lubricator) assemblies. The clean series 10-AR is available with Rc, G, or NPT thread options to match regional pneumatic standards.

This regulator is RoHS compliant and designed for modular interconnection with other SMC clean series air preparation components including 10-AF filters and 10-AMD/AMH mist separators. Ideal for semiconductor equipment, pharmaceutical process air, and any clean room pneumatic circuit requiring stable, contamination-free pressure regulation.