Instructions Of Use

STEP BY STEP INSTRUCTIONS FOR ODD FITTING LAYOUT


Step 1.

With elbow on a flat level surface, layout quarter marks on each end of outside, centers and inside
radius of ell.
Step 2.

Align template on centerline radius marks with the zero degree increment lined up with one end of the ell and the ninety degree increment lined up with the opposite end of ell. Mark desired degree to be obtained.
Step 3.

Align template on outside centerline radius marks using outside radius graph, with the zero degree increment lined up with one end of the ell and the ninety degree increment lined up with the opposite end of ell. Mark desired degree to be obtained.
Step 4.

Align template on inside centerline radius marks using inside radius graph, with the zero degree increment lined up with one end of the ell and the ninety degree increment lined up with the opposite end of ell. Mark desired degree to be obtained
Step 5.

Using straight edge of template or flexible steel tape connect a minimum of three marks to obtain
a square finish.
Instructions for Chart Use

CUTTING A 90 DEG. FITTING TO ODD ANGLES

18"  NOMINAL PIPE SIZE   ( ACTUAL 18" O.D. )

CREATED BY JERRY W. RISLEY 6/15/04

 

ALL DIMENSIONS ARE IN INCHES

A

MEASUREMENTS

B

C

D

DEG.

INSIDE

CENTER

OUTSIDE

TAKE-OFF

OFFSET

END TO END

1

0.314

0.471

0.628

0.236

0.008

0.942

2

0.628

0.942

1.257

0.471

0.033

1.885

3

0.942

1.414

1.885

0.707

0.074

2.826

4

1.257

1.885

2.513

0.943

0.132

3.767




The chart is designed with columns and a row with calculated values for, (B) take offs, (C) offsets, (D) center to end and end to end dimensions on both sides of the templates as shown in above sketches. All dimensions to be used for standard ninety degree weld elbow, with std.wall, sch.40, sch.60, sch.80, XS. XXS. sch.120, sch.160, etc. etc., for odd degree fittings listed in column (A) Column (A), dimensions on one side of template to be used with “two” odd degree fittings back to back and the other side of template Column (A) dimensions to be used with “one” odd fitting attached to a long radius ninety degree standard elbow.

EXAMPLE: In reference to above odd fitting back to back sketch, and using above graph, 18” pipe size with a 0.132 offset, listed in column (C) two 4 degree fittings listed in column (A) is needed to obtain offset. Dimension given 0.943 in column (B) is actual dimension for take-off of the 4 degree odd fitting and the dimension given 3.767 in column (D) is actual end to end dimension of the two 4 degree fittings back to back.

NOTE: All given dimensions are fitting to fitting with no gap allowance


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