Week 14 challenge

Objective:

To design butterfly assembly in NX CAD Software and to apply GD & T assembly.

Introduction:

Butterfly valves are a family of quarter-turn rotational motion valves that are used in pipelines to shut-off flow. It is often said that butterfly valves can be used to regulate the flow. However, we do not recommend doing this, as it can damage the valve disk and have a negative effect on the sealing properties.

Butterfly valves are used where space is limited. Unlike gate valves, butterfly valves can be used for throttling or regulating flow as well as in the full open and fully closed position. The pressure loss through a butterfly valve is small in comparison with the gate valve.

The main components of butterfly valves are made up of four main parts: The body, Retainer, Lever, Disc plate, Shaft and Nut.

Assembled view is shown below.

Draft image after applying GD & T

Parts and assembly attached below