Since 1986 Collins-Oliver has prospered by providing a unique combination of top-quality products, excellent service and discount prices. We are a dealer of new and new surplus instrumentation tube fittings and tubing valves manufactured by major name brands such as Swagelok, Parker CPI, Parker A-Lok, Hy-Lok, Hoke, Gyrolok, Bilok, Let-Lok, SSP, Tylok, Kor-Lok, Dl-Lok, Superlok, S-Joint, etc. All of the material we sell is new and new surplus. In addition to instrumentation valves by all major manufacturers, Collins-Oliver also stocks sealants, lubricants and leak detectors including standard and high density Teflon tape and anaerobic sealant. We also stock stainless steel tubing in coils and 20-foot sticks.