Isolating and drain valves

Plumbing · Conventional Tank Type Water Heaters · printed page 280 (PDF page 281)

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Book index entries

Isolating and Drain Valves – Water Heater Isolating and Drain Valves Plumbing

Text in the illustration

hot water
cold water isolating valve
check for a cold water isolating valve and inspect for leakage
vent connector
draft hood
gas pipe
gas water heater
check for a drain valve and inspect for leakage and/or damage
drain valve

Generated explanation

The illustration shows a conventional gas-fired tank water heater with hot-water and cold-water connections at the top. An enlarged detail identifies the cold-water isolating valve and instructs the inspector to check for its presence and leakage. A second enlarged detail shows the threaded drain valve near the bottom of the tank, with instructions to check for leakage or damage. The heater also has a draft hood and vent connector, a gas supply pipe and control assembly, and a side-mounted relief valve with a discharge pipe extending toward the base. No actual leakage or damage is depicted.

Components

gas tank water heater cold-water supply pipe cold-water isolating valve hot-water outlet pipe drain valve draft hood vent connector gas supply pipe gas control assembly relief valve relief-valve discharge pipe

Materials

metal piping metal tank jacket