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Tube Fittings
to twist the tubing. Friction between nut and flare may produce unequal distribution of the compression force on the flare. The long-necked nut requires its full length of tubing before a bend can start. A three-piece fitting (nut and sleeve) creates tightening force with a short nut which...
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FCI Best Practices Engineering Guide
. Mounting of FCI ST98/ST50. Valve. with closed ball valve. ST98. 1" NPT. Insertion of FCI ST98/ST50. ST50. ¾" NPT. thru opened ball valve under. pressure with minimal. leakage at compression. fitting if with Teflon ferrule. ST50Series. ST98Series. MT86/91Series. GF90/92Series. ST75Series...
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Clsoing the Gap on Hydraulic Leaks
. This creates a metal-to-metal seal. Compression fittings squeeze a metal ring between a nut and a threaded fitting. But reliability is often a problem with these metal-to-metal seals. For instance, sudden shocks or long-term vibration can cause them to fail. Manufacturers often suggest O-ring face...
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Beware Thermal Cycling in Bioprocessing Part 2
employed. The most often selected type is the ISO 2852. The fitting consists of four components-- two flanged ferrules, which are to be welded to the required lengths of thin-walled tubing, thin-walled tubular shapes or other components; an elastomeric or plastic gasket located between the flanged...
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Residual Stress Distributlons Produced By Strain Gage Surface Preparation (.pdf)
. procedures and etching. The principal subsurface. region.(7) The diffracted intensity, peak breadth, and. residual stress distributions and the depth of the. position of the K. cold-worked layer were determined for each surface. 1 diffraction peak were determined. by fitting a Pearson VII function...
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Choosing the Right Fluid Connector for Your Liquid Cooling Application - Part 1: Fittings
. Next month’s article will cover couplings. Fitting Types. There are many types of fittings used in liquid cooling applications but the more commonly used fittings are: beaded, barbed, NPT tapered pipe threads, SAE straight threads, compression, 37 º AN flare, bite-type, mechanical grip-type and o-ring...
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Accounting for lost motion
maximum pull-pull working loads on the cable's minimum breaking strength, plus a safety factor. Also consider the conduit's resistance to deflection and compressive forces, and cable-assembly end-fitting selection. High loads and cycles can cause the cable to stretch and wear through the conduit...
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Power: A Multiparameter Instrumentation Approach to Makeup and Cycle Chemistry Measurements
be under positive pressure, a liquid film at a. loose compression fitting, rotameter or other component can allow ppb quantities of air to diffuse. into the sample without exhibiting a leak externally. Such an air leak can be detected by varying. the sample flowrate. A higher sample flowrate...
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Right-sizing pneumatic valves
as volume coefficient (Cv) or in liters per minute. All devices that conduct air resist flow to some degree, and pressure drop across a device will increase with flow. Less resistance means a smaller pressure drop. Note that any device, fitting, or run of tubing can affect the system flow rate...
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Engineering Hose Assemblies for Safe and Reliable Performance
, and lightweight, while maintaining safety and durability. Here are some ways to ensure hose integrity and longevity. Hose and fitting compatibility. Most hoses are manufactured to SAE J517 or EN (European Norm) Standards, the latter based on earlier DIN German standards. These standards predominate...