January 2016, Vol. 243, No. 1

Features

Industry Becoming More Comfortable with Excess Flow Valves

When I first joined the natural gas industry in 1981, excess flow valves (EFVs) were the most controversial issue in distribution pipeline safety. EFVs are simple devices installed in gas-service lines at the connection to the main that remain open under normal flows but close if a surge in flow exceeds the EFV’s trip point, such as might occur if the service line is severed by excavation equipment. EFVs are inexpensive to install when a service line is first installed or later replaced, but significantly more expensive to retrofit on an existing service or replace if the valve fails or a customer installs gas-burning equipment that requires more gas than the EFV will allow through the serv

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Pipeline & Gas Journal magazine.

2) SUBSCRIBE to Pipeline & Gas Journal magazine in print or digital format and gain IMMEDIATE ACCESS to the current issue as well as to 3 articles from the PGJ archives per month. $199 for an annual subscription.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain IMMEDIATE ACCESS to this article, the current issue, all past issues in the PGJ Archive, access to all special reports, special focus supplements and more. $1,395 for an annual subscription.  For information about group rates or multi-year terms, contact J'Nette Davis-Nichols at Jnette.Davis-Nichols@GulfEnergyInfo.com or +1 713.520.4426.

Related Articles

Comments

{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}