![V33 Check Valves](https://www.dklokusa.com/wp-content/themes/dk/library/images/uploads/Valves-Check-V33-Series-Poppet-Trans.png)
- Inline check valves with fixed and adjustable cracking pressure settings
- Reliable DK-LOK® Two Ferrule and Single Ferrule Tube Fitting, Male and Female NPT, British Standard Pipe Tapered, British Standard Pipe Parallel, and SAE O-Ring Boss Seal pipe end connections
- Stainless Steel, Brass and Exotic Alloy, and NACE® body material construction
- FKM and NBR standard elastomer seals. Optional seals available; Teflon™, Kalrez®, Ethylene Propylene, HNBR, and Aflas®