Each lead / hose assembly is tested to 1.5x the maximum allowable working pressure using water.
Each lead/hose assembly is tested to the maximum allowable working pressure, or 3700 psig with Nitrogen to further check for leaks.
If the lead/hose assembly is to have non-permanent ends installed (such as elbows, CGA fittings, etc.) it is once again leak checked with Nitrogen to the maximum allowable working pressure, or 3500 psig.
Three sample per bulk hose lost (beginning, middle and end) are tested per CGA E.9-2017 standard in order to determine and approve the effusion rate of the flexible, post-sintered PTFE tube material.
Flexible, post-sintered PTFE tube material is hot solvent degreased prior to any further handling or processing.
100% of the leads and hoses manufactured by Weldcoa are cleaned for oxygen service using environmentally friendly processes.
Oxygen cleaning is performed with Modern Chemical Blue Gold, using guidelines set forth in the Compressed Gas Association Pamphlet G-4.1 “Cleaning Equipment For Oxygen Service”
1. Leads and hose assembly are internally cleaned prior to assembly.
2. Permanent fittings are cleaned prior to lead/hose assembly.
3. Lead and hose assemblies are internally and externally cleaned after assembly with the permanent fittings.
4. Non-permanent fittings are cleaned prior to attachment to the lead / hose assembly.
The inside of the lead / hose is rinsed with 150°F hot ionized water to remove any residue from the cleaning step.
The lead / hose assembly is dried prior to final assembly and packaging. Vacuum drying to micron levels is available for moisture critical applications.
Weldcoa has invested over 2 million dollars into our facility and automation within the last two years. We have significantly expanded our lead division production area and training center, added staff and upgraded our equipment automation capabilities and more. If you would like to visit our facility, talk to our team and take a tour, please contact us at firstname.lastname@example.org today!