Across
- 3. A brass compression ring used for joining copper tube.
- 4. Air conditioning and refrigeration system.
- 5. A substance that retards the flow of heat.
- 6. Heating a material and slowly cooling it to relieve internal stress. This process reduces brittleness and increases toughness.
Down
- 1. An iron, or link in a chain, bent into the form of a horseshoe, stirrup, or letter U, with holes in the ends to receive a bolt or pin.
- 2. The height of a water column, measured in feet. One foot of head is equal to 0.433 pounds per square inch (psi).
- 3. The ease with which a material can bend.