Vacuum Fittings
Below are the sizes for the diameters of the various NW, QF, KF and ISO vacuum fittings. We have included a file you may download that shows, to scale, the various sizes. This chart also lists the physically measured diameters of the flange so you can use it to review what you have there used a ruler or calipers. There is typically enough differentiation in the size of the diameters of the flange compared to other sizes of flanges to easily determine one NW size from another by simply by measuring with a ruler, scale or calipers. Exceptions are some of the oddballs. The NW10 size, which is not often used, is many times satisfied with standard NW16 parts.-
NW40 TO NW16 Conical Adapter 304 Stainless Steel
$ 76.17$ 80.19 -
NW40 TO NW16 Conical Adapter Aluminum
$ 47.40$ 49.89 -
NW40 x NW40 x 1/8" Gauge Port Tee Stainless Steel
$ 92.95$ 97.50 -
NW40 X 1.00" Female National Pipe Tap (FNPT) Aluminum (1" FNPT)
$ 37.24$ 39.21 -
NW40 X .250" Female National Pipe Tap (FNPT) Aluminum (FNPT)
$ 23.70$ 24.95 -
NW40 X 2.0" Male National Pipe Tap (MNPT) Aluminum (2"NPT)
$ 78.00$ 81.97 -
NW40 X 1.75" FINE THREAD Adapter Welch Pumps 304 Stainless Steel
$ 236.10$ 248.47 -
NW40 X 1.0" Male National Pipe Tap (MNPT) Aluminum (1" NPT)
$ 74.55$ 78.41 -
NW40 X 1.0" Male National Pipe Tap (MNPT) 304 Stainless Steel (1" NPT)
$ 125.28$ 131.87 -
NW40 X .375" Male National Pipe Tap (MNPT) Aluminum (3/8" NPT)
$ 47.40$ 49.89 -
NW40 Socket Weld Ring Brass 1.5"ID Accepts 1.5" Tubing
$ 20.32$ 21.39 -
NW40 Weld Ring Brass 1"ID Accepts 1" Tubing
$ 18.63$ 19.61 -
NW40 Stub Aluminum
$ 18.63$ 19.61 -
NW40 Stub 304 Stainless Steel
$ 27.15$ 28.52 -
NW40 Port Cover Plastic
$ 14.25$ 15.00 -
NW40 Port Cover Aluminum
$ 14.40$ 15.15 -
NW40 Port Cover 304 Stainless Steel
$ 18.63$ 19.61 -
NW40 X NW40 12.60" Long Nipple 304 Stainless Steel
$ 111.75$ 117.61