ASME B16.9 L/R Elbows
Standard drawing of ASME B16.9 90° & 45° long radius (L/R) elbows. The ASME B16.9 elbow is used when a pipe changes direction. Elbows can turn up, turn down, turn left, right, or any angle in between. The long radius (L/R) elbows denote elbows with the center-to-end dimension of 1.5D radius which equals to 1.5 x NPS in inch unit.