Patents
Sitemap › E03 - Water supply; Sewerage › E03B - Installations or methods for obtaining, collecting, or distributing water › E03B 7 - Water main or service pipe systems
Patents for E03B 7 - Water main or service pipe systems (5,081)
12/1999
12/16/1999WO1999064975A1 An apparatus for the enhancement of water quality in a subterranean pressurized water system
12/15/1999EP0964104A2 Blackflow preventer assembly
12/15/1999CN2353801Y Water-level automatic control valve
12/14/1999US6001250 Connecting means with sieve element for a water flow appliance
12/09/1999CA2274265A1 Backflow preventer assembly
12/08/1999CN1047220C Automatic draining device with improved structure
12/07/1999US5996611 Enhanced features for backflow prevention device cover
12/07/1999US5996606 Four-port valve and three-way valve
12/07/1999US5996603 Apparatus and method for an in-line valve-controllable outlet
12/07/1999CA2193494C Method of cleaning and maintaining potable water distribution pipe systems with a heated cleaning solution
12/02/1999WO1999061712A1 Improved water mains bypass system
12/01/1999EP0961065A1 Shut-off device for a water supply-line
12/01/1999EP0961064A1 Valve device in a water supply-line
11/1999
11/25/1999DE19922769A1 Throttle flap valve for use in the water supply and chemical industries
11/17/1999CN2349267Y Power free pressure booster for running water supply pipe line
11/16/1999US5983925 Dirt free valve
11/16/1999US5983923 Water service box and connectors for PEX pipe
11/10/1999CN2348016Y Water-filling automatic shutter for water tank
11/10/1999CN2348015Y Valve and pipeline device
11/10/1999CN2348014Y Water supply control device for building
11/10/1999CN1234467A Technology for preventing water-delivery system from frost crack
11/09/1999US5979490 Adjustable anti-freeze water delivery assembly
11/04/1999DE19819870A1 Anti-tamper locking pin for securing flowmeter
11/04/1999DE19819323A1 Diversion lock for ball seat valves
11/02/1999US5975119 Ice-proof fluid line assemblies
10/1999
10/28/1999DE19817665A1 Plastic block for simultaneous installation of utility pipes
10/26/1999US5971011 Water shut-off valve and leak detection system
10/20/1999CN2344443Y High-quality drinking running water supply equipment for building
10/20/1999CN1045806C Flood protecting system
10/19/1999US5967175 Waste line stoppage detector and automatic water shutoff system
10/14/1999WO1999051823A1 Frost protection device
10/14/1999DE19827992A1 Retrofitting device for installing fluid flow meter in pressurized pipeline
10/13/1999EP0949383A2 Water conduit box and tandem of two such boxes
10/13/1999CN2343211Y Remote-measuring controller for distant high-storey water tank water level
10/13/1999CN2343210Y Automatic water pumping controller with multiple protective functions
10/12/1999US5964246 Outdoor hot and cold water faucet assembly
10/07/1999WO1999050584A1 Device for subsequently installing a fluid meter in a pipeline
10/07/1999DE19907217A1 Frost protection device for horse/cattle drinking troughs
10/07/1999DE19815255A1 Temporary connection for domestic water supply
10/06/1999CN1230618A Multifunctional peasant family well
09/1999
09/28/1999US5957156 Insulated valve housing
09/21/1999CA2160134C Plumbing fixture carrying drinking water comprised of a copper alloy
09/15/1999EP0942274A2 A method and a system for detecting, monitoring and/or localizing hazard as changes of environmental conditions underground or in a building structure
09/15/1999CN2338386Y Dynamic and constant pressure water supply controlling device
09/15/1999CN2338385Y Visible dirt removing apparatus
09/15/1999CN2338384Y Expansion type pipeline dredging apparatus
09/15/1999CN2338383Y Safety and timing type water supply equipment
09/15/1999CN1228350A Pipeline type purified water supply system
09/14/1999US5950653 High pressure relief valve for use with a backflow preventer
09/08/1999CN2337197Y Adjustable quantitative water supply device
09/07/1999US5947150 Freezeless dripping wall faucet-hydrant
09/05/1999CA2264404A1 Water valve assembly and water draining method
09/01/1999CN2336013Y Water storage and transport device
08/1999
08/31/1999US5944985 Reject water drain line installation system and apparatus for under sink reverse osmosis filter system
08/26/1999DE19802169A1 Cleaning process for biological and oxidation deposit removal from e.g. water pipes, heat exchangers, cooling water circuits, vessels and fittings
08/25/1999CN1044828C Device for running water tube
08/24/1999CA2196486C Device for purging water supply line
08/05/1999DE19834904A1 Water meter shaft
08/05/1999DE19803901A1 Valve seat insert comprising parts firmly connected to one another
08/03/1999US5931177 Valves
08/03/1999CA2153269C Non-freezing liquid supply system
07/1999
07/22/1999DE19800670A1 Method for leakage testing of side or secondary ducts
07/21/1999EP0698191A4 Plumbing fixture carrying drinking water comprised of a copper alloy
07/14/1999CN1044143C Pipeline net system using reliable connection
07/13/1999US5921270 Automatic flush system for water lines
07/06/1999US5919519 Acid treatment of copper alloy to prevent leaching of lead
06/1999
06/30/1999CN2326643Y Running-water pressure reducer
06/30/1999CN2326642Y Water-saving type domestic water-drinking machine
06/29/1999US5915395 Method for the cleaning of water mains
06/23/1999CN2325426Y House keeping type water purifying tank
06/22/1999US5913614 Recirculating plumbing system
06/16/1999CN1219631A Water storing installation in hilly area
06/10/1999WO1999028536A1 Method of reducing elution of lead in lead-containing copper alloy, and city water service fittings made of lead-containing copper alloy
06/10/1999DE19752741A1 Water damage protection device for buildings
06/02/1999DE19748965A1 Concealed connector casing for water meter, especially encapsulated meter with screw-in stub
06/02/1999CN2321823Y Running water pipe defreezing device
05/1999
05/12/1999EP0915183A1 Tinning of copper tubes
05/12/1999DE19749827A1 Blocking prevention method for supply lines acted on by media with main valve and tap points
05/12/1999CN1216602A Safety element for a duct
05/04/1999US5900807 Collision detection device
05/04/1999US5899222 For use with a ground mounted fire hydrant
04/1999
04/28/1999CN1043165C Pressure-gradient type self-closing water tap
04/21/1999CN1214376A Method for preventing contamination by lead from metallic piping devices
04/14/1999CN2313967Y Automatic distance water supplier
04/13/1999US5893388 Waterflow monitoring device
03/1999
03/31/1999CN2312254Y Non-suction height type pipeline and its water supply equipment set
03/31/1999CN2312253Y Mechanism type vacuum compensation device
03/31/1999CN1212346A Eddy-current prevention water-deliverying rectifying device
03/31/1999CN1212345A Eddy-current prevention water-deliverying rectifying device
03/31/1999CN1212344A Eddy-current prevention water-deliverying rectifying device
03/11/1999WO1999011878A1 Pollutant interceptor
03/10/1999EP0900305A1 Central water-loss prevention system
03/10/1999CN1210182A Pure water transferring system
03/09/1999US5878784 Pipe blocking technique
03/04/1999WO1999010279A1 Device for sterilizing and filtering water which flows through a sanitary device
03/03/1999CN2309364Y Automatic water-storage water purifier
03/02/1999US5876017 Plumbing fixture carrying drinking water comprised of a copper alloy
02/1999
02/25/1999WO1999009264A1 Mixer and method for dispensing cold water containing co¿2?
02/25/1999DE19736633A1 Sanitary water supply has ultraviolet lamp directed at filter
02/24/1999EP0898022A2 Filter fitting arrangement for drinking water
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