scope:

PREFACE

This publication represents a standard for safe operation, substantial and durable construction and acceptable performance of products covered by the International Approval Services (IAS) certification program within the limitations given below and in the scope Section of this standard

This standard is based on proven engineering principles, research and the combined expertise of gas utilities, manufacturers, users, building code officials, government agencies, and others having specialized experience.

Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of products, the safety construction and performance of which may exceed the various provisions specified herein. in its preparation, full recognition has been given to possibilities of improvement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded to International Approval services, A Division of CSA, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131, or the chairman of the (interim CSA) Gas Equipment Standards steering Committee, 178 Rexdale Boulevard, Etobicoke, Ontario, Canada M9W 1R3.

Safe and satisfactory operation of a gas appliance pressure regulator depends to a great extent upon its proper installation, use and maintenance. It should be installed, as applicable, in accordance with the National Fuel Gas Code, ANSI Z223.1; the Natural Gar Installation Code, CAN/CGA-B149.I; the Propane installation Code, CAN/CGA-B149.2, manufacturers installation instruction.

Users of this American National Standard CSA Standard are advised that the devices, products and activities within its scope may be subject to regulation at the Federal, Territorial, Provincial, state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard, the Federal, Tutorial, Provincial, state or local regulation should be followed.

THIS STANDARD IS INTENDED TO BE USED BY THE MANUFACTURING SECTOR AND BY THOSE APPLYING THE EQUIPMENT AND BY THOSE RESPONSIBLE FOR ITS PROPER INSTALLATION. IT IS THE RESPONSIBILITY OF THESE USERS To DETERMINE THAT IN EACH CASE THIS STANDARD IS SUITABLE FOR AND APPLICABLE TO THE SPECIFIC USE THEY INTEND.