head gate


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head gate

[′hed ‚gāt]
(civil engineering)
A gate on the upstream side of a lock or conduit.
A gate at the starting point of an irrigation ditch.
(petroleum engineering)
The gate valve that is installed nearest the pump or compressor on oil or gas lines.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
"Although the head gates include a handrail and anti-slip surface all in good order, the volume of use was a concern, as the gates were not designed or intended for use as a general crossing point.
The components of this management system include automation of the check gates (used to control water levels in the canals), head gates, and flow-measurement structures; software to automate the water order and billing system; and software to calculate the water mass balance that is needed to support water orders and compare recommendations to actual measurements.
The Logan, Utah, project incorporates new precast pipeline, box culverts, a section of pressurized pipe, metering systems, turn-outs, head gates, and improved maintenance access.
Robert Power produced the Paul Nolan inmate to head Gates Of Rome at the last before going on to score by four lengths.
British Waterways, listed building consent for replacement of head gates, extension of walkway, alteration of gearing, addition of sag bar, replacement of tail gates, alterations to hand rail and anti-slip, addition of sag bar, Lock 14 Kirklees Top, Calder and Hebble Navigation Canal.
A wastewater treatment plant in the Rocky Mountain region required a sewer bypass system that would allow a contractor to replace failing head gates. The nine aging gates which needed to be replaced had been submerged and in use for over 50 years.