Duolok stainless instrumentation tube fittings incorporate a double-ferrule design to deliver leak-tight operation for both analytical and process instrumentation applications in which leak-tight capability is essential for high quality, productivity and cost control. They are manufactured to intermix and interchange with Swagelok® tube fittings.
| DuoLok Stainless Instrumentation Fittings Specifications | |
|---|---|
| Type | Compression Tube Fittings |
| Sizes | Fractional: 1/16 to 2 in Metric: 3 to 25 mm |
| Maximum Operating Pressure | 12,000 psig (825 bar) @ 100° F (38° C) |
| Temperature Range | -325° F to 1200° F (-198° to 648° C) |
| Materials | Stainless steel, carbon steel, brass, monel. Other materials are available on request. |
| Adapters | NPT, ISO/BSP, SAE/MS, AN, weld ends, port connectors, tube stubs |
| Configurations | Straights, elbows, tees, crosses, caps, plugs |
| Special Fittings | Bored-through, dielectric, calibration, bulkhead, tube inserts swivel connectors and tee fittings |
Duolok stainless instrumentation fittings are comprised of four precision-machined elements: body, front ferrule, back ferrule, and nut. In make-up, the double-ferrule design, coupled with the staged sequential swaging action of the ferrules, adjusts for differences in tubing materials, hardness, and thickness of the tube wall to ensure leak-tight connections across a broad range of potential applications.
316 stainless steel tube fittings are constructed from cold-finished bar stock in compliance with ASTM A-276 and ASTM A-479. Elbows, tees, and crosses, are machined out of close-grained 316 stainless steel forgings in compliance with ASTM A-182. Certified material test reports (CMTR’s) are available on request for all parts which are also heat code traceable.
Duolok tube fittings are fully assembled and bagged individually in line with the highest standards of quality and cleanliness. The protective bags prevent contamination in the form of tubing burrs, etc. The fittings are packaged in handy, small-lot quantities to simplify procurement and handling. Colour-coded box labels are utilized dependent on the tube fittings’ material. These labels include the part number, material, product description and picture of the product.
NPT thread and BSP tapered thread fittings can be purchased with factory installed high-quality teflon tape. Factory-taped fittings lower costs and make sure that the threads are properly taped to ensure leak-tight installations.
SFP provides extensive installation training. Courses cover:
SFP offers the tools and accessories necessary to support tube fitting assembly and installation along with tube cutting, preparations, and bending.
