100 series needle valves from Noshok are available in zinc-nickel plated steel, electropolished stainless-steel and brass, and are 100% helium leak tested to 1 x 104 ml/s for performance and reliability. Rated from 6,000 psi at 200 °F for brass and 10,000 psi at 200 °F for steel and stainless-steel models, they feature FKM o-ring seals and PTFE backup rings below the stem threads to protect against corrosion and galling.