Available in PVC, CPVC, GFPP and PVDF materials and construction. The NVA Series features an integrated stem with a PTFE seat for superior control, purity and performance. Sizes range from 1/4 in. (DN8) to 1/2 in. (DN10). FPM Seals are standard. All valves carry a pressure rating of 150 psi / 10 bar Non-Shock at 70ºF.