SMC 10-ARP40-N04-3Z | 10-ARP Series Clean Room Direct Operated Precision Regulator Body 40 1/2 NPT Large-Flow Capacity

The SMC 10-ARP40-N04-3Z is a clean room specification direct operated precision regulator from the 10-ARP series, configured in the largest body size 40 with 1/2 inch NPT port connections for maximum flow capacity. The ARP40 represents the highest-flow option in the precision regulator lineup, supporting pneumatic distribution mains, large-bore cylinder circuits, and high-consumption equipment groups where the body 20 and 30 variants would experience excessive pressure drop under peak demand conditions.

What flow capacity advantage does body size 40 provide? The ARP40 with 1/2 NPT ports handles the largest air volumes in the ARP series while maintaining the same precision control specifications: setting sensitivity within 0.2% F.S. and repeatability within ±1% F.S. This makes the ARP40 the standard selection for regulating main air supply lines feeding multiple workstations, clean room tool groups, or high-volume pneumatic test equipment where flow demands routinely exceed the capacity of smaller regulators.

Unlike the ARP20K and ARP30K variants, this configuration (without "K") does not include the backflow function, providing straightforward forward-flow pressure regulation for circuits where controlled depressurization is handled by separate exhaust valves or is not required. The "-3Z" option designation specifies the set pressure range and configuration options. The locking adjustment knob prevents accidental pressure changes.

The "10-" clean series ensures fluorine grease, clean room assembly, anti-static double packaging, and particle generation grade 1 compliance. This regulator is RoHS compliant and integrates with SMC's modular air preparation system for comprehensive clean room FRL installations.