Fluid Connectors 40A-92 RATERMANN Cryogenics T (844) 341-3433 y F (844) 341-3444 y Website: CryoOrder.com y Email: [email protected] BI-LOK Tube Fittings About BI-Lok Series D Construction and Operation Quality Control Pressure Ratings Tubing Selection and Preparation Interchangeability and Gaugeability Materials of Construction Component Brass Fitting Body Bar Stock Forged ASTM B124, CDA 377 ASTM A182 ASTM A479 ASTM B16, CDA 360 Front Ferrule Back Ferrule Nut 316 Stainless Steel Fitting Material Stainless Steel Fitting Bodies and Nuts are Heat/Lot code traceable. Stainless steel nuts are silver plated to prevent gauling and reduce make-up torque. BI-Lok Tube Fittings are designed, manufactured and inspected to the rigid quality requirements of our ISO certified production facility. All Stainless Steel Fittings are Heat/Lot code traceable. BI-Lok Tube Fittings have been tested and certified to a variety of Global International Industry standards and regulatory agencies. The selection of the proper tubing is essential to both the perform- ance and safety of a tubing system. Careful consideration should be applied to the following variables; system pressure, media, flow, operating temperature and environmental conditions. Tube fittings should always be used with similar tube materials. i.e.; Stainless Steel fittings with Stainless Steel tubing and Brass fittings with copper tubing. In order to achieve proper fitting make-up, the tubing must be softer that the fitting material. For stainless steel tubing, we recommend fully annealed seamless or welded and drawn tubing of ASTM A269, A213 and A249. Tubing hardness should not exceed Rockwell B-90. For copper tubing, seamless or soft annealed ASTM B-75, or seamless soft annealed Type K or Type L water tubing ASTM B-88 is recommended. Care should be taken in tube handling to ensure that tubing is reasonably straight and is cut in a manner to create smooth square ends, free of burrs. Handling practices should consider that surface scratches on the tube OD may be a potential source of leaks. *Swagelok® is a registered trade mark of the Swagelok Company BI-Lok Series D Dual Ferrule Tube Fittings are composed of four precision machined component parts: 1) fitting body, 2) front ferrule, 3) back ferrule, 4) nut. BI-Lok Tube Fittings are shipped fully assem- bled and individually bagged. Once the tubing has been fully insert- ed into the fitting, a leak tight seal is achieved through the simple action of tightening the nut against the fitting body. The tightening of the nut provides the axial thrust required to engage the captively held ferrules against the outside diameter of the tubing. The staged swaging action of the ferrules, with minimal torque transfer to the tubing during make-up, provides the key to BI-Lok’s high integrity sealing capability and exceptional service life. BI-Lok Series D Dual Ferrule Tube Fittings are manufactured to be completely component intermixable with the Swagelok® brand of tube fittings. Independent third party testing concluded that piece by piece intermixing of each manufacturer’s component parts, in vari- ous combinations, yielded no performance degradation of the fitting connection. BI-Lok Dual Ferrule Tube Fittings are fully compatible for use with the Swagelok® brand Gap Inspection Gauges. The BI-Lok Dual Series D Ferrule Tube Fitting consists of four elements – nut, front ferrule, back ferrule and fitting body. However, the actual sealing function is accomplished with the addition of a fifth element, the tubing itself. Therefore, the pressure rating of the fitting assembly is a direct function of the tubing selected. Proper tube selection is critical and the ultimate responsibility of the system designer/user. The tables listed on page 3 provide the allowable pressure ratings of a variety of commonly used tube sizes and materials.
