1105 13TH ST 2024-06-07 - Laserfiche WebLink

MERIT® Weld-MiserTm Tee -Let® Welding Outlet Fittings Unified Design TM Series Merit's Unified Design Series carries all important design considerations into its entire line of welding branch outlet fittings. Merit° Weld-MiserTm Tee -Lets° are designed and Manufactured to reduce the amount of weld required to install the Tee -Lets on thin wall or proprietary flow pipe. Typically only one weld -pass completes the installation. Merit Tee -Lets install with less weld volume than any other brand of welding outlet fittings for fire sprinkler applications. To accomplish this: • The contoured end of the fittings employs a reduced outside diameter. Two major advantages are immediately apparent: • The thinner wall on the contoured end permits welding temperatures to be matched to the thickness of the branch line or main thereby insuring complete penetration without cold welds, weld roll -off, burn -through or excessive distortion. — —,—— • On smaller sizes a heavier section is maintained on the threaded end of the fitting. This protects the threads from dam- age during shipping and handling prior to installation as well as from weld distortion. • Each outlet size 11/" and larger, whether male or female threaded, cut grooved or beveled requires the same hole size in the header pipe. This simplifies the installation process. General Specifications • Tee -Let welding outlet fittings are manufactured from highly weldable steel which conforms to the chemical and physical requirements of ASTM A-53, Grades A or B, Type E. Ease of installation is assured when automatic welding equipment is used to install Merit Tee -Lets. • Threads are cut in accordance with the requirements of ANSI B1.20.1, national standard for tapered pipe threads, or ISO-7-1 threads are available. • Tee -Let threaded and grooved welding outlet fittings are UL/ULC Listed and FM Approved for use in the fire sprinkler systems installed in accordance with the requirements of NFPA Bulletin 13. They are rated for 300 PSI operation in fire sprinkler systems, and higher pressures in other non -critical piping systems. • Tee -Lets are offered in a wide variety of header sizes. The consolidated header sizes shown in the following charts allow the fittings to be installed on more than one header size, permitting the first size listed to fit the header perfectly, while a small gap along the longitudinal center line of the header will appear for the second size listed. • Merit° Weld-MiserTm Tee -Lets° are identified by a lot number that provides full traceability per ISO 9000 specifications. For Your Piping Systems Specify Weld-MiserTm Tee -Let° Branch Outlet Fittings shall be Merit Weld -Miser Tee -Let, Lightweight forged steel, employing low weld volume profile to provide for full penetration welds with minimum burn through and pipe distortion on Schedule 5 thru 10, proprietary thin wall, and standard wall pipe. Threads are to be ANSI 31.20.1, or ISO-7-1, and the bore of the fittings calculated to improve flow. Welding outlets to be ILL Listed, FM Approved for use conforming to NFPA, Bulletin 13 and pressure rated for 300 PSI maximum. How to Order - Use either of the following methods for ordering Merit° Weld -Miser Tiv Tee -Lei°. Method No. 1 Specify quantity desired followed by the part number shown in the "dimensions" chart for the type and size of outlet desired. Quantity Part Number Method No. 2 Use the following system: Type Merit Steel _ x Quantity Outlet Size Header Size Weight End Tee -Let Material Always Column "A" Insert size Sch. 10 A -Female Thread order a few of Chart consolidation Standard B - Male Thread more than from Column C - Cut Groove actually "B" of chart. C/R - Roll Groove required for the job. AMStar- Merit -1.10 —3— fireN dua % pvivan ar Mvil Inttmatlanal