The US Pipeline & Hazardous Materials Safety Administration issued a final rule on Oct. 7 for excess flow valves on new and replaced distribution pipelines. The final ...

The rule becomes effective in April 2017. Excess flow valves were already required for new and replaced single-family residence gas service supply lines, according to NTSB.

Flow is controlled by either throttling or diverting it. Throttling involves reducing orifice size until all of the flow cannot pass through the orifice; bypassing involves routing part of the flow ...

A new program from UGI aims to convince owners of older homes to install an inexpensive safety valve to prevent fires or explosions. It's called the excess flow valve. "It's a safety device that is ...

Constellation Nuclear’s Nine Mile Point Unit 2, a 1,124 MW Boiling Water Reactor, was commissioned in 1987. In the mid-90s the plant started to experience cavitation problems with the unit’s 2 inch x ...

Many power plants use older control valve technologies that do not address the severe nature of today’s power plant operations. The older design valves require constant maintenance and their ...

Hyundai Motor has patented a valve recovery control apparatus for hydrogen tanks, ensuring stable hydrogen supply to fuel cells. The system suspends fuel cell operation if the excess flow valve is ...