Hy-Lok USA provides quality products, competitive pricing, and outstanding customer service which presents tremendous value to our customers. Fitting Products include: instrument tube fittings, pipe fittings, hose connectors and adapters, zero clearance metal gasket and o-ring fittings, weld fittings, JIC/flare fittings, JIS fittings, DIN fittings and many others. Valve Products include: needle valves, instrument ball valves, check and relief valves, instrument manifolds, block and bleed valves, gauge root valves, and process ball valves. We offer the widest range of products in the industry.