If the systems were drained the switches would trip when the system was
refilled.
The arrangement is a control valve (V), check va.(V), flow switch (F) then tee
to a test line with a valve (X) on the test line, straight through the tee goes
to the sprinkler.
__X_______
____X__V__F___|_________
Craig L. Prahl, CET
Fire Protection
CH2MHILL
Lockwood Greene
1500 International Drive
Spartanburg, SC 29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
CH2MHILL Extension 74102
[email protected]
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Hinson, Ryan
Sent: Thursday, April 07, 2011 11:44 AM
To: '[email protected]'
Subject: RE: elevator related sprinklers
Could be to prevent the elevator machine room or elevator shaft flow switches
from tripping if the system feeding these heads are drained.
Ryan Hinson
Burns & McDonnell
Direct: 952-656-6003 Ext 3662
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Thursday, April 07, 2011 9:20 AM
To: [email protected]
Subject: elevator related sprinklers
UFC 3-600 shows a check valve in the line serving a sprinkler in an elevator
machine room or hoistway. Just wondering if anyone can state what the purpose
of the check is in that line. Looking at Figures 6-8 through 6-9.
Craig L. Prahl, CET
Fire Protection
CH2MHILL
Lockwood Greene
1500 International Drive
Spartanburg, SC 29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
CH2MHILL Extension 74102
[email protected]
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