An elbow provides a change in material flow direction. This adds pressure losses to the system due to impact, friction, and re-acceleration. As the product enters the inlet of the elbow, it typically continues moving straight ahead to the first impact zone. The product is then deflected at an angle toward the outlet of the elbow. The deflection angle is determined by the elbow design the productâ??s characteristics, the conveying velocity, and specific load. Grades & Specification Elbows ANSI B16.9 / MSS-SP75 DIN2605 Teil 1 / Teil 2 Types 45 DEGREE90 DEGREE 180 DEGREE GRADE ANSI B16.28 WPB / WPL 6 Radius SHORT RADIUS LONG RADIUS If the desired grade is not mentioned also, send us an inquiry.