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.
References in periodicals archive ?
Tenders are invited for Repairs to Gani Dy No.1 Head Gate, Escape at Ch-1+290 of Gani Branch Canal and Repairs Head works of OL-1 of Gani Dy No.3 (Road Crossing)
Tenders are invited for works include approx 1 ls removal of structures and obstructions; 1 ls siphon inlet structures; 1 ea 15" head gate; 100 lf silt fence; 285 lf reset fence - barbed wire; 35 lf 10"-0" span single radius arch pipe; 950 cy canal excavation; 100 cy stockpile native stone riprap; 35 lf 15" dr-51 pip irrigation pipe; 2,400 sy seeding; see outside link.
Tenders are invited for Repairs to head wall and gates of Munal Dy head gate (Double gate) on GLBC Main Canal
Part of the work for the contract will involve installing the four-sided precast box culverts, excavating the ditches to design parameters, casting concrete retaining walls, installing guardrail, installing chain-link fence, placing 48 inch corrugated steel pipe with head gates and concrete headwalls for the turnout.
"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.