Orifice Products distributed by Pneuline Supply, Inc. are products that restrict the flow of liquids, air, or gas. These items are made of various materials including Brass, Aluminum, 304 Stainless Steel, Sapphire, Polysulfone, or Polycarbonate. Pressure ratings are 125 psi for plastic to 2000 psi for Brass. Sizes range from .0039 inches to .125 with thread variations of 10-32 to 1/2 NPT.