Flushing system for a safety system
AssigneeMagarl, LLC
InventorsRobert B. Eveleigh, Thomas R. Baker, Cameron J. West
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for improving emergency wash systems for compact, low flow emergency eyewash systems that provide tepid water at low flow rates and systems that are adapted and configured to reduce the exposure of users to Legionnaire's Disease with washing system features that permit quick, efficient, high flow rate flushing of the plumbing providing water to the washing system. Still further systems provide tepid water from a thermostatically controlled mixing valve that has a multi-function body.
Claims24
An emergency washing system in fluid communication with a source of water, comprising:
- a shutoff valve receiving water from the source and providing the water to a shutoff valve outlet;
- an emergency eyewash housing having an inlet receiving water from said shut-off valve outlet and having an eyewash outlet, said eyewash housing including a flow control valve adapted and configured to provide a flow of water at a substantially constant rate from said eyewash inlet to said eyewash outlet over a range of inlet pressures;
- a plurality of upwardly directed spray nozzles, said nozzles receiving water from the eyewash outlet and being adapted and configured to spray the water upwards in a pattern adapted and configured to wash the eyes of a user standing next to said eyewash housing;
- and
- a flush housing having an inlet adapted and configured to receive water from said shutoff valve outlet and a flowpath from the flush housing inlet to a flush housing outlet;
- wherein said system operates in a washing mode expelling water at the substantially constant rate with said eyewash housing in fluid communication with said shutoff valve, or in a flushing mode expelling water at a substantially higher rate than the constant rate with said flush housing in fluid communication with said shutoff valve.
An emergency washing system in fluid communication with a source of pressurized water, comprising:
- an electric water heater receiving water from the pressurized source and adapted and configured to provide heated water;
- a thermostatically controlled mixing assembly including a cartridge valve with a thermostat coupled to a movable valve member and having first and second variable area openings, said mixing assembly having a hot water inlet receiving heated water from said water heater and providing the heated water to the first variable opening, a cold water inlet receiving water from the pressurized source and providing the pressurized water to the second variable opening, the received hot water and received cold water being mixed by said cartridge valve, said movable valve member being biased to close the first variable opening if the thermostat fails;
- a flow control valve receiving mixed water from said mixing assembly, said flow control valve being adapted and configured to limit the flow of mixed water therethrough to a substantially constant flow less than about two gallons per minute and
- an emergency eyewash assembly including a housing having a flow passage receiving mixed flow from said flow control valve, a plurality of upwardly directed spray apertures, and an internal chamber between the flow passage and the spray nozzles, said internal chamber being adapted and configured to provide mixed water to each of the plurality of spray apertures in parallel.
Dependencies are inferred from the claim text.