Polybutylene pipe should be at least 18" from water heaters

Plumbing · Introduction · printed page 269 (PDF page 270)

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Book index entries

18 Inches from Water Heater Water Heater – 18 Inches from Polybutylene Pipe Supply Plumbing – In-house

Text in the illustration

copper pipe typically used within 18" of water heater copper pipe typical
floor framing
cold
hot
polybutylene pipe
6" min. from vent connector
copper pipe typically used within 18" of water heater
copper pipe typical
foundation wall
water meter
gas
gas water heater
main shut off valve
cross section

Generated explanation

The illustration shows a cross section of basement supply plumbing serving a gas water heater beneath floor framing. The incoming water supply passes through a main shutoff valve and water meter before rising to the cold-water distribution line and heater branch. Copper piping connects the heater's hot and cold connections to polybutylene piping, with an annotation specifying copper typically within 18 inches of the water heater. A separate dimension specifies a minimum 6-inch clearance from the vent connector to the nearby piping. Green check marks identify these separation practices as correct, and colored arrows indicate hot- and cold-water flow.

Components

gas water heater polybutylene supply piping copper connection piping pipe transition fittings cold-water shutoff valve vent connector water meter main shutoff valve gas supply piping foundation wall floor framing

Materials

polybutylene copper wood concrete