Hi-Tech Controls Inc Hi-Tech Controls Inc. offers a large selection of Pneumatic Fittings, Valves Cylinders and Filters, Regulators, Lubricators (FRL) Units suitable for a wide range of applications. Home Page: http://www.hitechcontrols.com 303-680-5159 / 800-677-8942 Pneumatic Fittings – Nickel Plated Brass, Composite and Dot Push-In Fittings (NPTF / Inch BSP / Metric Sizes), High Pressure Fittings 8000 Series Dual Seal and Pipe Fittings, etc. Manual, Mechanical, Air-Pilot and Flow Control Valves ...