Date: Thu, 10 Nov 2005 13:46:04 -0500
Reply-To: ILPI <info**At_Symbol_Here**ILPI.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: Testing Eyewashes for Flow Rate
In-Reply-To: <p06110402bf97eed9007c**At_Symbol_Here**[]>

>Testing safety eyewashes can be a real nuisance. Some are connected 
>to drains to get rid of the water from the weekly function tests or, 
>hopefully never, uses. Then the water goes off to wherever. Has 
>anybody worked out a way to test units like that for flow?
>Likewise for face washes.
>If you have, please advise.
>Gordon Miller
>Lawrence Livermore National Laboratory
>P.O. Box 808  (L-379)
>Livermore, California 94550
>(925) 423-8036
>Fax (925) 422-5176

Disclaimer: My company is a Guardian Equipment distributor.  Guardian 
makes eye/face washes and safety stations, nothing else.

The heads on Guardian's units (don't know about other companies) have 
in-line filters; these should be replaced as needed.  The interval 
really depends on your water hardness.  Once or twice a year seems 
prudent.  You can see a block diagram for Guardian's heads on page 2 
of this page:

You can always place a standard Bourdon-style pressure gauge on the 
supply line.  If that reads in the manufacturer's operating range and 
your filters are clean, then simple operation/function tests should 
generally obviate any need for flow testing.

I forwarded your inquiry Guardian and got their opinion on the flow issue:

"Guardian Equipment has all of our
products third party tested and certified to meet or exceed the ANSI
Z358.1-2004 standard.  The flow rate does not need to be measured by the end
user, unless for some reason they feel the flow is not meeting the minimum.
Our GS and FS Plus spray heads are designed with a flow control built in.
The GS head will deliver 1.8 GPM with a water pressure range of 20-100 psi.
The FS head will deliver 3.2 GPM with a water pressure range of 20-100 psi.
My suggestion would be for anyone to visit our website for
a copy of our ANSI Z358.1 checklist.  They can also send in a request for a
free eye wash testing template."

The precise URL for the guide and tester is

Hope this helps.

Rob Toreki
Safety Emporium - Lab & Safety Supplies featuring brand names
you know and trust.  Visit us at
esales**At_Symbol_Here**  or toll-free: (866) 326-5412
Fax: (859) 523-0606, 4905 Waynes Blvd, Lexington, KY 40513-1469

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