FLOW INDICATOR, PADDLE WHEEL Back Catalog number: 539 Availability: In the manufacturer's stock Price on request - + Recommended 535 DISCONNECTOR PE, O 10-11-12mm (Nominal) Price on request S-104-1 Swagelok Back Ferrule SS, 1/16" Price on request 436 DISCONNECTOR PE, O 8-9-10mm (Nominal) Price on request