A test nipple is used to facilitate Fire Department Connection hydrostatic testing. Has 2" internal female straight pipe threads. Specifications: 2" IPT/NPSH Internal Female Thread x 2½" Male NPT x 3" Male NYFD Download Spec SheetTabsPart Finder Result SKU: A2F2-25M2-3MNYFD Part Table 1 Items Part Size A2F2-25M2-3MNYFDA2F2-25M2-3MNYFD New York City Test Nipple