Fitting Type: Bell Reducing Coupling threaded per ASME B1.20.1, Material: 316 Stainless Steel casting, MSS SP-114, Class: 150, NPT Thread Sizes: 4 x 1-1/2 inch NPT, Length A: 4.38 inch, Approximate Weight: 4 LBS
Click here for a specification sheet on class 150 316 stainless steel bell reduction couplings