This line of MARZOLF™ Flanges is designed to mate up with class 300 bolt hole pattern. MARZOLF™ Flanges save money and reduce down time by eliminating the need to cut and re-weld piping when installing or replacing Van Stone style flanges. These rings are available with different corrosion resistant coatings including Zinc Electro Plate and E-Coat Epoxy.

Size (in inches) Part No Inside Diameter I.D. Outside Diameter O.D. Thickness T. Bolt Circle B.C Holes H.D. No. Holes H.D. Dia Weight Each Lbs.
1/2” 361G80-300-IPS .90” 3-3/4” 3/4″ 2-5/8” 4 5/8” 3
3/4” 360G80-300-IPS 1.11” 4-5/8” 3/4″ 3-1/4” 4 3/4″ 3
1” 357G80-300-IPS 1.38” 4-7/8” 3/4″ 3-1/2” 4 3/4″ 3
1-1/4” 358G80-300-IPS 1.72” 5-1/4” 3/4″ 3-7/8” 4 3/4″ 4
1-1/2” 359G80-300-IPS 1.97” 6-1/8” 3/4″ 4-1/2” 4 7/8” 6
2” 268G80-300-IPS 2.46” 6-1/2” 1” 5” 8 3/4″ 7
2-1/2” 182G80-300-IPS 2.97” 7-1/2” 1” 5-7/8” 8 7/8” 10
3” 172G80-300-IPS 3.60” 8-1/4” 1-1/8” 6-5/8” 8 7/8” 13
4” 149G80-300-IPS 4.60” 10” 1-1/2” 7-7/8” 8 7/8” 22
5” 292G80-300-IPS 5.69” 11” 1-1/2” 9-1/4” 8 7/8” 28
6” 126G80-300-IPS 6.75” 12-1/2” 1-1/2” 10-5/8” 12 7/8” 39
8” 144G80-300-IPS 8.75” 15” 1-1/2” 13” 12 1” 58
10” 150G80-300-IPS 10.92” 17-1/2” 1-7/8” 15-1/4” 16 1-1/8” 82
12” 152G80-300-IPS 12.92” 20-1/2” 1-7/8” 17-3/4” 16 1-1/4” 115
14” 184G80-300-IPS 14.18” 23” 2-1/4” 20-1/4” 20 1-1/4” 163
16” 175G80-300-IPS 16.19” 25-1/2” 2-1/4” 22-1/2” 20 1-3/8” 220
18” 176G80-300-IPS 18.20” 28” 2-1/4” 24-3/4” 24 1-3/8” 280
20” 177G80-300-IPS 20.25” 30-1/2” 2-5/8” 27” 24 1-3/8” 325
24” 325G80-300-IPS 24.25” 36” 2-5/8” 32” 24 1-5/8” 492
30” 326G80-300-IPS 30.25” 43” 3-3/8” 39-1/4” 28 1-7/8” 779