A sheath introducer for a catheterization or similar procedure comprises a body having a upper portion and a lower portion, the lower portion being angled with respect to the upper portion; a curved tapering channel extending through the upper and lower portions; a cannula with a tapered distal end extending at an angle with respect to the upper portion a hemostatic valve having an access port and a fluid tight slit opening and seated within the upper portion and maintained by a cap; and an angled sideport in fluid communication with the channel. Optionally, a wiper flange extends inward within the valve access port which provide an additional fluid tight seal when a catheter is slidingly inserted, removed or maintained within the valve. A dilator can be adapted for use with the introducer by having a bend in the tube portion of the dilator.