Description

This standard covers general cylinder valve design, design qualification, required markings, and performance requirements such as operating temperature limits, pressure ranges, operating torque limits, and flow capabilities. Also provided are testing and maintenance requirements. Appendices include instructions for providing data to determine valve selection, information on using valves correctly, and a performance standard for valve protection.

This standard does not apply to cylinder valves used with nonrefillable cylinders (such as DOT-39, TC-39M, and nonrefillable cylinders manufactured under special permits or permits of equivalent level of safety); cylinder valves used in DOT-2P and DOT-2Q (TC-2P and TC-2Q) cylinders; cylinder valves with an integrated pressure regulator (VIPR); cylinder valves on DOT-4L (TC-4LM) cylinders; cylinder valves in refrigerated liquid service; or cylinder valves on DOT/TC cylinders (tubes) that are horizontally mounted to a chassis or framework for road transportation.

Product Details

Edition:

6th

Published:

04/01/2009

Number of Pages:

52

File Size:

1 file , 380 KB

Description

CGA V-9 covers cylinder valve design, manufacture, and use including performance requirements such as operating temperature limits, pressure ranges, and flow capabilities. It also includes requirements such as materials, inlet and outlet connections, cleaning, qualification and production testing, maintenance, and reconditioning. This standard also includes guidelines and requirements for the design, material selection, testing, and marking of cylinder valve protection caps. This standard is intended for valves for compressed gases packaged in U.S. Department of Transportation (DOT) and Transport Canada (TC) cylinders.

This standard provides information on valve selection, valve use guidelines, and valve protection caps (see Appendix A, Appendix B, and Section 10, respectively).

This standard does not prejudice the continued use of valves in service or in inventory at a manufacturer’s or user’s site that were manufactured before the effective date of this standard provided the valves are identifiable to the original valve manufacturer and traceable to a manufacturing period. The identifying marks shall be permanent and visible on an installed valve.

This standard does not prohibit the use of valves that are Listed.

Product Details

Edition:

8th

Published:

11/15/2019

Number of Pages:

35

File Size:

1 file , 1.6 MB

Description

This standard serves to inform cylinder valve users, buyers, sellers, manufacturers, and others in the safe andproper use of cylinder valves.

This standard covers cylinder valve design, manufacture, and use including performance requirements such asoperating temperature limits, pressure range, and flow capabilities. It also includes requirements such as materials,inlet and outlet connections, cleaning, qualification and production testing, maintenance, and reconditioning.

This standard also includes guidelines and requirements for the design, material selection, testing, andmarking of cylinder valve protective caps. Except as noted in the last paragraph of this section, this standard isintended for valves for compressed gases packaged in U.S. Department of Transportation (DOT) andTransport Canada (TC) cylinders.

This standard provides information on valve selection, valve use guidelines, and valve protection caps (seeAppendix A, Appendix B, and Section 10, respectively).

Standards incorporated by reference in this publication include the referenced document’s procedures, criteria,and other requirements unless otherwise noted.This standard does not prejudice the continued use of valves in service or in inventory at a manufacturer’s oruser’s site that were manufactured before the effective date of this standard provided the valves are identifiableto the original valve manufacturer and traceable to a manufacturing period. The identifying marks shall be permanentand visible on an installed valve.

The effective date of this standard is three years from the date of the publication of this edition, which was May4, 2012. Valves manufactured on and after the effective date of this standard shall be in compliance with thisstandard.

Product Details

Edition:

7th

Published:

05/01/2012

Number of Pages:

56

File Size:

1 file , 1 MB