CREATION OF BUTTERFLY VALVE AND APPLY GD&T

AIM :

The main moto of this project is to design the assembly of the Butterfly valve and apply the GD&T concepts to the various parts of the Butterfly Valve

SOFTWARE USED :

CATIA V5

INTRODUCTION

GD&T gives manufacturers a clear understanding of the tolerances for a specific part. It provides the maximum amount of tolerance for the part to function properly, which reduces part complexity so that you aren't overspending for a minimum tolerance that you may not need.

GD&T allows you to convey substantial information about your part’s design using a relatively small amount of letters, numbers, and symbols. No long paragraphs of explanation necessary! The ability to communicate efficiently reduces back and forth between you and the contract manufacturing service you are working with.

Since GD&T is such a precisely articulated system of language, it minimizes ambiguity in the description of a parts design. As a result, you can be confident that your part will be manufactured with the highest degree of accuracy and work as intended in the field

BUTTERFLY VALVE :

A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start a flow. Butterfly valves are easy and fast to open.

Applications of Butterfly Valve :

• Compressed Air or Gas Applications
• Cooling water, air, gases and fire protection
• Slurry and similar services
• Vacuum service etc..

COMPONENTS OF BUTTERFLY VALVE :

1] BODY :

2]SHAFT :

3] RETAINER:

4] PLATE :

5] HANDLE :

6] NUT :

ASSEMBLY :

Above Used GD&T Symbols and their Meanings:

Symbols	Characteristic	Description
	Position	Locate the center point axes.
	Straightness	is applied to a single line in which irregularities should be wih in two parallel straight lines.
	Flatness	It is applied to surface, Hence the irregularities in surface should be within the limits of a two parallel lines
	Circularity	It is applied to only single cross section
	Cylindricity	Applied to surface of the cylinder, the dia of the cylinder should be lie within the concentric cylinder.
	Profile of a Surface	Measurement of line across of surface irregularities on straight ine surface
	Perpendiculariy	Orientation of surface axis should be perpendicular to datum reference
	Angularity	Control the angle of feature.
	Parallelism	Orientation of surface axes should be parrallel to datum reference.
	Concentricity	Meadian point for the given feature.
	Symmetr	Similar to the concentricity but applied to rectangular feature .

CONCLUSION

The Butterfly valve is successfully created and GD&T is applied to all the different parts and the assembly of the Butterfly valve