home > Products > Instrumentation Process Valves > Check Valves - FDE40 Series > FDE-40A Standard Adjustable Cracking Pressure
- Male to tube fitting
| Body Material | Inlet Connection | Outlet Connection |
| Brass | Male BSPT Thread | Let-Lok® Tube Fitting |
| Stainless Steel 316 | Male NPT Thread | One-Lok® Tube Fitting |