Glossary

A decorative hinge having the appearance of a butterfly.

A valve used to control the flow of fluids; a disk controls flow through the port. Also called a butterfly damper.

A small trowel used to spread mortar on a brick before it is laid.

A door or window hinge consisting of two rectangular metal plates which are joined with a pin; in large hinges of this

The head of a bar, bolt, rivet, or screw which is hemispherical in shape; usually the head is less than a full

A butt joint, 1 which is secured by nailing a piece of wood to each side of a joint.

1. In plumbing, a pipe tee which is connected to a branch that is longer than the main run. 2. A plumbing tee