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Page number 20
2.20 Rev. 12-12 Shaded area indicates changes MUELLER ® STEEL TEST CAPS Mueller ® steel test caps for high pressure tee and fitting applications: Inside IP Thread of Steel Cap 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" Part Number 537398 537399 537400 537401 537477 537478 NOTE : Some tees and fittings use one size larger caps than the nominal size of the main product. Equivalent CI Cap Part Number 079159 079160 079161 036811 036812 036813
