Adopts With Amendments
Chapter 4
Plastic Pipe and Fittings
International Fuel Gas Code 2021
[F] 401 General Gas Piping
Section 401 — General Gas Piping. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.1 Scope
Section 401.1 — Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 401.1.1 Gas Appliance Installation
Section 401.1.1 — Gas Appliance Installation. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.1.2 Underground Gas Piping
Section 401.1.2 — Underground Gas Piping. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.1.3 Piping Through Walls
Section 401.1.3 — Piping Through Walls. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 401.1.4 Concealed Piping
Section 401.1.4 — Concealed Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 401.2 Gas Piping - Existing Piping Systems
Section 401.2 — Gas Piping - Existing Piping Systems. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.2.1 Low Pressure Natural Gas
Section 401.2.1 — Low Pressure Natural Gas. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.3 Existing Piping
Section 401.3 — Existing Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 401.3.1 Medium Pressure
Section 401.3.1 — Medium Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 401.4 Gas Piping System Design - Sizing
Section 401.4 — Gas Piping System Design - Sizing. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.5 Gas Piping System Testing
Section 401.5 — Gas Piping System Testing. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 401.6 Test Pressure
Section 401.6 — Test Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 402 Gas Piping Materials
Section 402 — Gas Piping Materials. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 402.1 Pipe Sizing
Section 402.1 — Pipe Sizing. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 402.1.1 Gas Pipe Installation in Buildings
Section 402.1.1 — Gas Pipe Installation in Buildings. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 402.2 Interconnections Between Gas Piping Systems
Section 402.2 — Interconnections Between Gas Piping Systems. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 402.2.1 IFGC Copper Tubing for Gas
Section 402.2.1 — IFGC Copper Tubing for Gas. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 402.3 Prohibited Locations
Section 402.3 — Prohibited Locations. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 402.4 Sizing by Calculation
Section 402.4 — Sizing by Calculation. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 402.5 Piping Materials - Steel Pipe
Section 402.5 — Piping Materials - Steel Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 402.6 Piping Materials - Copper Tubing
Section 402.6 — Piping Materials - Copper Tubing. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 402.7 Piping Fittings
Section 402.7 — Piping Fittings. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403 Gas Piping Installation
Section 403 — Gas Piping Installation. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 403.1 Appliance Connection
Section 403.1 — Appliance Connection. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.1.1 Steel Pipe
Section 403.1.1 — Steel Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.1.2 Copper and Copper Alloy Pipe
Section 403.1.2 — Copper and Copper Alloy Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.2 Underground Gas Piping
Section 403.2 — Underground Gas Piping. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 403.2.1 Pipe Sizing Tables LP-Gas
Section 403.2.1 — Pipe Sizing Tables LP-Gas. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.3 Copper and Brass Pipe
Section 403.3 — Copper and Brass Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.4 Corrugated Stainless Steel Tubing (CSST)
Section 403.4 — Corrugated Stainless Steel Tubing (CSST). This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 403.5 Plastic Pipe
Section 403.5 — Plastic Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.5.1 Piping Installation - Underground Piping
Section 403.5.1 — Piping Installation - Underground Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.5.2 Piping Installation - Piping Through Walls
Section 403.5.2 — Piping Installation - Piping Through Walls. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.6 Fittings
Section 403.6 — Fittings. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.6.1 Piping Joints - Threaded Joints
Section 403.6.1 — Piping Joints - Threaded Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.6.2 Piping Joints - Brazed Joints
Section 403.6.2 — Piping Joints - Brazed Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.6.3 Piping Joints - Welded Joints
Section 403.6.3 — Piping Joints - Welded Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.7 PE Pipe Joints
Section 403.7 — PE Pipe Joints. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 403.8 CSST Joints
Section 403.8 — CSST Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 403.9 Piping Support - General
Section 403.9 — Piping Support - General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.1 Appliance Connections to Building Piping
Section 404.1 — Appliance Connections to Building Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.1.1 Metallic Pipe Requirements
Section 404.1.1 — Metallic Pipe Requirements. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 404.1.2 Metallic Tubing
Section 404.1.2 — Metallic Tubing. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.1.3 Plastic Pipe and Tubing
Section 404.1.3 — Plastic Pipe and Tubing. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 404.10 Drips and Sediment Traps
Section 404.10 — Drips and Sediment Traps. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.11 Gas Meter Protection
Section 404.11 — Gas Meter Protection. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 404.12 Underground Piping
Section 404.12 — Underground Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.2 Pipe Sizing - Longest Length
Section 404.2 — Pipe Sizing - Longest Length. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 404.2.1 CSST Installation
Section 404.2.1 — CSST Installation. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.2.2 Welded Joints
Section 404.2.2 — Welded Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.2.3 Brazed Joints
Section 404.2.3 — Brazed Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.2.4 Flared Joints
Section 404.2.4 — Flared Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.2.5 Mechanical Joints
Section 404.2.5 — Mechanical Joints. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 404.3 Underground Piping Materials
Section 404.3 — Underground Piping Materials. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 404.4 Piping in Solid Floors
Section 404.4 — Piping in Solid Floors. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.5 Metallic Pipe Joints
Section 404.5 — Metallic Pipe Joints. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 404.6 Gas Pipe - Underground Penetrations
Section 404.6 — Gas Pipe - Underground Penetrations. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 404.7 Underground Piping
Section 404.7 — Underground Piping. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.8 Corrosion Protection
Section 404.8 — Corrosion Protection. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 404.9 Prohibited Joints
Section 404.9 — Prohibited Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 405.1 Gas Pipe Support
Section 405.1 — Gas Pipe Support. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 405.1.1 Gas Piping Through Foundation Walls
Section 405.1.1 — Gas Piping Through Foundation Walls. This section covers structural design and loading requirements. Specific values and calculation methods are defined in the official code text. Refer to the official code text for complete requirements.
[F] 405.2 Piping Support Intervals
Section 405.2 — Piping Support Intervals. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 405.3 Welded Joints
Section 405.3 — Welded Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 405.4 Welded Joints
Section 405.4 — Welded Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 405.5 Flared Joints
Section 405.5 — Flared Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 405.6 Mechanical Joints
Section 405.6 — Mechanical Joints. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 406 Inspection and Testing
Section 406 — Inspection and Testing. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.1 Purging
Section 406.1 — Purging. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.1.1 Gas Piping Installation Requirements
Section 406.1.1 — Gas Piping Installation Requirements. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 406.2 Pressure Test Requirements
Section 406.2 — Pressure Test Requirements. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.2.1 Test Medium
Section 406.2.1 — Test Medium. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.3 Detection of Leaks
Section 406.3 — Detection of Leaks. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.4 Test Gauges
Section 406.4 — Test Gauges. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.4.1 Test Pressure
Section 406.4.1 — Test Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 406.5 Piping in Solid Floors and Partitions
Section 406.5 — Piping in Solid Floors and Partitions. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 407.1 Concealed Gas Piping
Section 407.1 — Concealed Gas Piping. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 407.2 Purging Indoors
Section 407.2 — Purging Indoors. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 407.3 Test Pressure
Section 407.3 — Test Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 407.4 Detection of Leaks
Section 407.4 — Detection of Leaks. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 408.1 Drips and Sediment Traps
Section 408.1 — Drips and Sediment Traps. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 408.1.1 Drips and Sediment Traps
Section 408.1.1 — Drips and Sediment Traps. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 408.2 Shutoff Valve Locations
Section 408.2 — Shutoff Valve Locations. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 408.3 Test Medium
Section 408.3 — Test Medium. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 408.4 Valve Types
Section 408.4 — Valve Types. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 409.1 Gas Shutoff Valves
Section 409.1 — Gas Shutoff Valves. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 409.1.1 Gas Shutoff Valve Requirements
Section 409.1.1 — Gas Shutoff Valve Requirements. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 409.2 Gas Pressure Regulator Installation
Section 409.2 — Gas Pressure Regulator Installation. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 409.3 Regulator Vent
Section 409.3 — Regulator Vent. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 409.5 Appliance Shutoff Valve
Section 409.5 — Appliance Shutoff Valve. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 410.1 Gas Pressure Regulators
Section 410.1 — Gas Pressure Regulators. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 410.2 Regulator Venting
Section 410.2 — Regulator Venting. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 410.3 Connector Materials
Section 410.3 — Connector Materials. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 410.4 Sediment Trap
Section 410.4 — Sediment Trap. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 411.1 Overpressure Protection
Section 411.1 — Overpressure Protection. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 411.1.1 Individual Appliance Shutoff
Section 411.1.1 — Individual Appliance Shutoff. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 411.1.3 Earthquake Automatic Shutoff
Section 411.1.3 — Earthquake Automatic Shutoff. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 411.2 Gas Piping Identification
Section 411.2 — Gas Piping Identification. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 411.3 Sizing Tables
Section 411.3 — Sizing Tables. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 412.1 Excess Flow Valves
Section 412.1 — Excess Flow Valves. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 412.2 Excess Flow Valves
Section 412.2 — Excess Flow Valves. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 413.1 Gas Piping in Concealed Locations
Section 413.1 — Gas Piping in Concealed Locations. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 413.2 Gas Appliance Elevation in Garages
Section 413.2 — Gas Appliance Elevation in Garages. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 414.1 Piping Identification
Section 414.1 — Piping Identification. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 415.1 Gas Piping in Buildings Under Construction
Section 415.1 — Gas Piping in Buildings Under Construction. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 416.1 Gas Piping Through Floors
Section 416.1 — Gas Piping Through Floors. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 417.1 Gas Piping Underground Repair
Section 417.1 — Gas Piping Underground Repair. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 418.1 Drip Legs and Sediment Traps
Section 418.1 — Drip Legs and Sediment Traps. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.