A ball valve is a valve that uses a spherical disc to regulate flow. It has two ports, one at each end of the ball, and is opened and closed by rotating the ball 90 degrees. A needle valve is a...
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Vera Sandlin
Vera Sandlin is the founder of uptowncraftworks.com, a website dedicated to helping crafters find the materials and tools they need to create beautiful and unique handmade items. Vera has been crafting for over 15 years and has a passion for creating unique and special items that can be enjoyed by others.