Reducer Couplings

Vacuum pipe and fittings reducing coupling

vacuum tubing reducer coupling

Reducing Coupling Schematic

2-1/8″Ø to 4″Ø – 16 Ga
5″Ø to 8″Ø – 14 Ga
10″Ø to 14″Ø – 12 Ga
All dimensions (inches)

Vacuum Reducing Coupling

Vacuum Reducing Couplings Available in:
Carbon Steel, Galvanized Steel, Aluminum 6061, 304 SS

Small end expanded is standard on reducers.
Straight Ends available on all reducers. Attach an S to the end of the reducers part number.

D  1-1/4 thru 4″Ø, 1-1/2″ for 5″Ø & 6″Ø

Part No. Size A E C K
RC-212 2-1/8 x 2 2-1/8 2 4 2
RC-254 2-1/2 x 2&1/8 2-1/2 2-1/8 4-1/2 1-1/2
RC-3041 3 x 21/8 3 21/8 83/4 2
RC-304 3 x 21/2 3 21/2 5 11/2
RC-3541 3.5x 2.125 3.5 2.12 11 2
RC-3542 3.5×2.5 3.5 2.5 9.25 2
RC-354 3.5 x 3 3.5 3 5.5 1.5
RC-4041 4x 2_1/8 4 2_1/8 13_1/2 2
RC-4042 4x2_1/2 4 2_1/2 11_3/4 2
RC-4043 4×3 4 3 9_1/4 2
RC-404 4x3_1/2 4 3_1/2 6 1_1/2
RC-5041 5×2 1/8 5 2.12 19 1/4 2.75
RC-5042 5x 2  1/2 5 2.5 17 1/2 23/4
RC-5043 5x 3 5 3 15 2_3/4
RC-5044 5x 3 1/2 5 3 1/2 12 1/2 2 3/4
RC-504 5x 4 5 4 8 1 3/4
RC-6041 6x 2 1/8 6 2 1/8 24 3/4 3-1/4
RC-6042 6x 2  1/2 6 2-1/2 23 3_1/4
RC-6043 6x 3 6 3 20 1/2 3.25
RC-6044 6×3  1/2 6 3.5 18 3&1/4
RC-6045 6 x 4 6 4 15 3/4 3 1/4
RC-604 6 x  5 6 5 9 1 3/4
RC-8044 8 x 4 8 4 26 1/4 4-1/4
RC-8045 8 x5 8 5 21 7/8 4_1/4
RC-804 8 x 6 8 6 17 1/2 4.25
RC-10045 10 x5 10 5 32 7/8 5-1/4
RC-10046 10 x 6 10 6 28 1/2 5_1/4
RC-1004 10 x 8 10 8 18 1/4 5 1/4
RC-12048 12 x 8 12 8 29-1/4 6-1/4
RC-1204 12 x 10 12 10 193/4 6_1/4
RC-1404 14 x 10 14 10 29 1/4 6.25
RC-1405 14 x 12 14 12 19-3/4 6 1/4

 

A vacuum reducing coupling is commonly used to reduce the tubing size in a vacuum or pneumatic conveying System. A vacuum reducing coupling can be inserted before a branch in order to maintain the proper velocity in the trunk line and to reduce the pressure loss. Standard vacuum reducers are available in tube sizes which measures the outside diameter of the tube. Pipe is measured by the inside diameter. It is important to remember this when specifying a vacuum reducing coupling. A vacuum reducer also has a smooth transition to reduce the loss in air flow.

Other terms for a vacuum reducer are listed below;

Vacuum reducer coupling

Straight reducer coupling

Expanded reducer coupling

Vacuum pipe and fittings reducer