3" in Inch NPT 316 Stainless Steel Threaded Half Coupling Weld On Pipe Tube Bung Fitting SS for Home Brewing, Automotive, Industrial, Aerospace - Amazon.com
316 Stainless Steel, 1/2 in x 1/2 in Fitting Pipe Size, Half Coupling - 2UA17|4307001508 - Grainger
1" in Inch NPT 316 Stainless Steel Threaded Half Coupling Weld On Pipe Tube Bung Fitting SS for Home Brewing, Automotive, Industrial, Aerospace - Amazon.com
Aluminum NPT Half Coupling – Boyd Welding LLC
Inch Dimensions of Socket Weld Half Coupling Rating 9000 as per ASME B16.11 – The Piping Engineering World