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3 to 4 inch fire coupling
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150mm reducing coupling
5 inch male to 4.5 inch female
NH to NST adapter
4-1/2 inch 4 thread per inch
9 NH thread
Metric to BSP converter
DIN 14420 coupling
BS 336 fire coupling
UL listed fire adapter
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CCCF certified coupling
304 stainless steel adapter
Fire suppression system fittings
Fire main coupling
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