This line of MARZOLF™ Two-Piece Backing Rings is designed to reinforce PVC and CPVC Van Stone flanges. These split flanges disperse bolt torque to facilitate higher bolt torques and ultimately increase the pressure capability of plastic flanges.
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Item #

Legacy Part Number

Size

Inside Diameter (I.D.)

Outside Diameter (O.D.)

Thickness (T)

Bolt Circle (B.C.)

Number of Holes

Holes Diameter (H.D.)

01CS-3/8-2.00-SB N/A 01CS-3/8-2.00-SB N/A 1 in N/A 2.00 in N/A 4-1/4 in N/A 3/8 in N/A 3-1/8 in N/A 4 N/A 5/8 in
0150CS-3/8-2.68-SB N/A 0150CS-3/8-2.68-SB N/A 1-1/2 in N/A 2.68 in N/A 5 in N/A 3/8 in N/A 3-7/8 in N/A 4 N/A 5/8 in
02CS-3/8-3.13-SB N/A 02CS-3/8-3.13-SB N/A 2 in N/A 3.13 in N/A 6 in N/A 3/8 in N/A 4-3/4 in N/A 4 N/A 3/4 in
03CS-3/8-4.60-SB N/A 03CS-3/8-4.60-SB N/A 3 in N/A 4.60 in N/A 7-1/2 in N/A 3/8 in N/A 6 in N/A 4 N/A 3/4 in
04CS-3/8-6.00-SB N/A 04CS-3/8-6.00-SB N/A 4 in N/A 6.00 in N/A 9 in N/A 3/8 in N/A 7-1/2 in N/A 8 N/A 3/4 in
06CS-3/8-7.88-SB N/A 06CS-3/8-7.88-SB N/A 6 in N/A 7.88 in N/A 11 in N/A 3/8 in N/A 9-1/2 in N/A 8 N/A 7/8 in
08CS-3/8-9.48-SB N/A 08CS-3/8-9.48-SB N/A 8 in N/A 9.48 in N/A 13-1/2 in N/A 3/8 in N/A 11-3/4 in N/A 8 N/A 7/8 in
10CS-3/8-12.00-SB N/A 10CS-3/8-12.00-SB N/A 10 in N/A 12.00 in N/A 16 in N/A 3/8 in N/A 14-1/4 in N/A 12 N/A 1 in
12CS-3/8-14.00-SB N/A 12CS-3/8-14.00-SB N/A 12 in N/A 14.00 in N/A 19 in N/A 3/8 in N/A 17 in N/A 12 N/A 1 in
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