Nomial size  | 
        inch | 3/4" | 1"  | 
        1-1/4" | 1-1/2" | 2" | 2-1/2" | 3" | 4" | 
|---|---|---|---|---|---|---|---|---|---|
Appox O.D.  | 
        inch  | 
        1.02 | 1.29  | 
        1.56  | 
        1.84  | 
        2.39  | 
        2.92 | 3.46  | 
        4.56  | 
      
recommended W.P. at 68 F  | 
        psi  | 
        100  | 
        100  | 
        90  | 
        90  | 
        70  | 
        65  | 
        60  | 
        50  | 
      
Vacuum Rating  | 
        in/HG  | 
        28  | 
        28  | 
        28  | 
        28  | 
        28  | 
        28  | 
        28  | 
        28  | 
      
Recom. Min. Bend Radius at 68 F  | 
        inch  | 
        2  | 
        3  | 
        4  | 
        5  | 
        6  | 
        8  | 
        9  | 
        13  | 
      
Approx.B.P. at 68 F  | 
        psi  | 
        300  | 
        300  | 
        270  | 
        270  | 
        210  | 
        195  | 
        180  | 
        150  | 
      
Approx. Wt.  | 
        lbs./ft.  | 
        .21  | 
        .30  | 
        .38  | 
        .48  | 
        .71  | 
        .97  | 
        1.27  | 
        2.01  | 
      
