Gas Service
Extra care must be taken when tubing is used in gas service applications. Small gas molecules easily escape through minute leak paths, therefore, the tubing must be free of nicks, scratches and imperfections of any kind. In particular, when using large diameter tubing the possibility of surface defects is increased due to greater surface area. It is strongly recommended that the heavier wall thicknesses be selected. Penetration of the ferrules on thin wall tubing or soft material may not offer enough radial resistance for sealing. In such cases, Tylok recommends using a Plane Insert.

Precautions for Weld Ends
CBC-Lok® Tube Fittings with weld ends offer the same positive sealing as all other Tylok fittings. Welding could deform the assembly, making pull ups or disassembly difficult. Some precautions should be taken...
• Remove the nut and ferrules from the fitting
• It is important that the fitting threads and sealing surfaces be protected from weld splatter
• A heat sink should be used to dissipate heat
• Ensure alignment by tack welding symmetrically
• Once welded, remove the weld splatter protection and reassemble nut and ferrules on fitting

Typsy Leak Detector
Tylok offers a leak detector, Tyspy, for use in all sealing applications. Tyspy meets standard MIL-L-25567D, Sect. 4.4.9 for use on oxygen systems. Availiable in 1 pt. spray bottles. Specify number of bottles needed when ordering. Part Number: TYSPY
• All temperature formula: -55°F to 200°F
• Ultra-sensitive
• Long-lasting bubbles
• Available in spray bottle
• Fluorescent for improved visibility
• Safe for oxygen systems
• Non-corrosive, non-toxic

Gap Gages
Gap Gages can be purchased to ensure the Installer and Inspector that the nut has been properly tightened. Available upon request.

Safety Guidelines
• Never connect, disconnect or remake a fitting with pressure in the system
• Make sure all fittings are properly installed
• Tubing material should be softer than fitting material
• Tylok recommends using Tylok replacement parts
• Although the fittings will hold to the pressure rating of the tubing, it is not recommended to go beyond this rating. Elongation could occur in the tubing, shrinking the wall thickness and causing potential harm to anyone in the area
• Always use proper thread lubricants and sealants on tapered pipe threads
• If process fluids are toxic and/or hazardous, exercise extra caution
• Never bleed a system by loosening a fitting
• For proper sealing it is recommended that the tubing and fitting be of like material

Quality Control
All components are manufactured and inspected to meet strict quality control standards in each phase of production. All employees are thoroughly trained to follow rigid procedures, in accordance with the ISO 9001:2000 Quality Standard, to ensure a quality product from the start of each job through completion. At Tylok our primary concern is quality, reliability and
service to our customers.