Water hammer definition

Water hammer means a dynamic pressure caused by the sudden transformation of kinetic energy to pressure energy when a liquid flowing full in a pipeline is abruptly stopped.
Water hammer means “[t]he phenomenon of pressure oscillation that occurs in pipes when a valve is opened or closed very rapidly, creating a sound similar to someone hammering on a pipe. When a valve position is changed quickly, the water pressure in a pipe increases and decreases in a very quick sequence, potentially causing serious damage to the system.” The Water Dictionary (2nd ed. 2010) at 662, AWWA, incorporated by reference in 35 Ill. Adm. Code 601.115(b); see 35 Ill. Adm. Code 601.105(c). The Water Dictionary’s definition includes an equation for “the speed of the pressure wave created by an instantaneous shutoff of a system.” Id.

Examples of Water hammer in a sentence

  • Water hammer arresters, where concealed, shall be accessible by means of access doors or removable panels.

  • Water hammer arrestors shall be installed in accordance with manufacturer's specifications.

  • Our Company has obtained a consent dated [●] from our Promoter for the lock-in of [●] Equity Shares, held by him, for a period of three (3) years from the date of Allotment and for lock-in of the balance pre-Issue Equity Share capital of our Company, held by them, for a period of one (1) year from the date of Allotment.

  • Water hammer may explode the pump.In normal conditions (apart from sudden power shut down, etc), stop the pump as below:• Close the discharge valve slowly• Switch the power off, stop the motor.

  • The module cleaning system shall include construction of RCC tank or supply and installation of Ground mounted PVC tank (s) of required storage capacity, pumps (including 1 No. standby pump), water supply mains and flexible hose pipes, taps, valves (NRV, Butterfly valve, Ball valve, Gate valve, PRV, scour valve etc.), Water hammer arrester(s), pressure gauge, flow meter etc.

  • The instructions contained in regulation 50 and 51 of PRB Volume-I should be kept in mind while conducting the inspection of units.

  • Water hammer can cause the normal water pressure to increase by up to a factor of 5.

  • Tools recommended for installation:• Drill• Wrench• Channel locks• Pipe cutter• NSF certified PVC primer and glue• NSF certified plumber's tape• Garden hose• 5 gallon bucketOptional components:• Check valve• Pro-Grade Bypass Kit• Water hammer arrestor• Copper wire & grounding clamps (if copper pipes are present)• Pex tubing, crimp rings and cutter >> Click here to view the Rhino® Whole House installation video.

  • Water hammer arrester – OptionalDishwashers, clothes washers, and fast-closing positive shutoff valves incorporated in the system all contribute to creating water hammer.

  • Bergant A, Simpson AR, Tinseling AS (2006) Water hammer with column separation: A historical review.

Related to Water hammer

  • Water heater means an appliance for supplying hot water for purposes other than space heating or pool heating.

  • Water closet means a closet which has a separate fixed receptacle connected to a drainage system and separate provision for flushing from a supply of clean water either by the operation of mechanism or by automatic action;

  • Drainage system means one or more artificial ditches, tile drains or similar devices which collect surface runoff or groundwater and convey it to a point of discharge.

  • Water user means a person, corporation, or other entity having a right to divert water from the Bear River for beneficial use;

  • Stormwater runoff means water flow on the surface of the ground or in storm sewers, resulting from precipitation.

  • Noncommunity water system means a public water system that is not a community water system.

  • cogeneration means the simultaneous generation in one process of thermal energy and electrical or mechanical energy;

  • Dewatering means the removal of water for construction activity. It can be a discharge of appropriated surface or groundwater to dry and/or solidify a construction site. It may require Minnesota Department of Natural Resources permits to be appropriated and if contaminated may require other MPCA permits to be discharged.

  • Transportation project means any project that the department is authorized by law to undertake including but not limited to a highway, tollway, bridge, mass transit, intelligent transportation system, traffic management, traveler information services, or any other project for transportation purposes.

  • Virginia Stormwater Management Act means Article 2.3 (§ 62.1-44.15:24 et seq.) of Chapter 3.1 of Title 62.1 of the Code of Virginia.

  • Water Service Connection means the pipes and fixtures used for the purpose of supplying any premises in the Municipality with water from the Corporation’s water works that is located between the Corporation’s watermain in the street and the street property line abutting the premises so supplied.

  • water meter means any apparatus for measuring or showing the volume of water supplied to, or of effluent discharged from any premises;

  • Sailboat means the same as that term is defined in Section 73-18-2.

  • Stormwater management system means any equipment, plants,

  • Community water system means a public water system which serves at least 15 service connections used by year-round residents or regularly serves at least 25 year-round residents.

  • Stormwater management planning area means the geographic area for which a stormwater management planning agency is authorized to prepare stormwater management plans, or a specific portion of that area identified in a stormwater management plan prepared by that agency.

  • Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, where specified, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • Sewage system means the entire sewage treatment and subsurface disposal system;

  • Water Surface Elevation (WSE means the height, in relation to mean sea level, of floods of various magnitudes and frequencies in the floodplains of coastal or riverine areas.

  • DNR means the Washington State Department of Natural Resources, acting through an authorized employee.

  • Landfill Gas means any gas derived through any biological process from the decomposition of waste buried within a waste disposal site.

  • Irrigation System means such major, medium and minor irrigation system for harnessing water for irrigation and other allied uses from Government source and includes reservoirs, open head channels, diversion systems, lift irrigation schemes, anicuts, tanks, wells and the like.

  • Aviation gasoline means fuel designed for use in the operation of aircraft other than jet aircraft,

  • Water Line The water line is the single lateral water service line from the point of the water utility’s connection to the point of the water meter or main shut off line inside the home. The water line also includes well water lines, excluding those exceeding five feet under the surface level of the yard.

  • Recycling center means an establishment, place of business, facility or building which is maintained, operated, or used for the storing, keeping, buying, or selling of newspaper or used food or beverage containers or plastic containers for the purpose of converting such items into a usable product.

  • Wastewater System means a system of wastewater collection, treatment,