Page 52 - ESP (CNG & LNG) Participant Guide

Module 6: CNG Depressurizing and Defueling

Lesson 6.4: Required Plumbing for Defueling CNG Vehicles

Required  Plumbing
Components on o Defueling receptacle
Vehicle o Three-way or quarter-turn valve

Defueling receptacle

Three-way valve

 Vehicles manufactured prior to 2013 may not have a defueling system
 Vehicles manufactured beginning in 2013 are required to have defueling capabilities

Typical CNG Fuel
System Plumbing
(With Defueling
Port)

NGV Essentials and Safety Practices (CNG & LNG) © 2023 NGVi All Rights Reserved Page 6-4