🔍 Key Concepts

• Difference between an all-purpose nozzle body and a fog applicator attachment used with it • How a combination nozzle controls stream type (fog/straight) compared with a simple shutoff nozzle • Typical design features of an in-line fog nozzle found in marine firefighting equipment

💭 Think About

• Look closely at the illustration: does it show a long applicator tube or only the shutoff body that other devices attach to? • Ask yourself what the handle positions A, B, and C are changing: are they changing the pattern, or simply opening/closing the flow? • Which choice names the slang term mariners sometimes use for this type of shutoff nozzle used with separate tips or applicators?

✅ Before You Answer

• Verify whether a fog applicator is usually a long pipe/tube with a perforated or bent head, rather than a short handheld body like the one shown. • Check if an in-line fog nozzle normally has an obvious adjustable fog pattern head, which is not labeled in the illustration. • Consider which option refers to the basic nozzle body that other tips (such as a fog applicator) can be attached to, matching the label "All-Purpose Nozzle" in the figure.