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Class Information
Number: 137/118.05
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Plural outflows > Flow rate responsive > Primer valve
Description: Subject matter wherein the change in the fluid flow rate in the main line actuates an outlet leading to a liquid trap seal.

Patents under this class:

Patent Number Title Of Patent Date Issued
8671970 Flow-through trap primer valve assembly Mar. 18, 2014
7882851 Pressure activated trap primer and water hammer combination Feb. 8, 2011
7520292 Pressure activated trap primer and water hammer combination Apr. 21, 2009
6834665 Automatic adjustable trap priming valve Dec. 28, 2004
6422260 Trap primer Jul. 23, 2002
6152164 Pressure-drop activated trap seal primer valve Nov. 28, 2000
5797419 Sewer line trap priming assembly and antisiphoning conduit component therefor Aug. 25, 1998
5678588 Sewer line multiple trap priming system and method Oct. 21, 1997
5287877 Sewer drain trap primer valve Feb. 22, 1994
4821625 Valve device for controlling the delivery of pressurized liquid to two separate hydrostatic motors Apr. 18, 1989
4488569 Apparatus with staged pressure differential for controlling fluid flow Dec. 18, 1984
4468193 Staged hydrocarbon combustion system Aug. 28, 1984
4054327 Air brake system with line pressure loss protection Oct. 18, 1977
4000752 Double-jet acting trap primer Jan. 4, 1977

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