Half Nipple, Short Weld Stub ISOK-400 Vacuum Fittings, Large Flange Size ISO-LF 400, Short Weld Stub, Tube Size 3.50 inch Long (88.9 mm), Stainless Steel.

These half nipple weld stubs follow International Standards Organization (ISO) standards and have a flange size of NW-400. ISO flanged vacuum fittings are commonly used to build process vacuum plumbing and systems for industrial applications. The fittings are quick to assemble using double claw clamps and a centering ring (please see top right figure - click to enlarge). The Viton® centering ring contains a rubber/elastomeric o-ring. The ISO standard sizes for large flanges are NW-63, NW-80, NW-100, NW-160, NW-200, NW-250, NW-320, NW-400, NW-500, NW-630. These vacuum flanges are made of stainless steel.

Half Nipple, NW-400 Vacuum Fittings, ISO-K Large Flange Size NW-400

Dimensions:
A= 17.72 in. (450.0 mm)
B= 16.00 in. (406.4 mm)
C= 15.62 in. ID (396.7 mm)
D= 3.50 in. (88.9 mm)
E= 3.87 in. (98.3 mm)
12.75 in. Rolled tube, Tack Welded, 3.50 in. Long, .130 Thick
Material: 304L Stainless Steel