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PUMP TEST HOSE LAYOUTS


Below are some suggested layouts to use when performing your annual pump tests.  By no means are these suggestions the only way it can be done.  Basically these are "old school" layouts that are tried and proven over many years.  That is not to say that they are the best way, the only way, or the easiest way.  However, if you are new to performing yearly apparatus pump tests these suggestions can save you a lot of time and effort.

Each pump section addresses the three primary tests of 100%, 70% and 50% capacity.  If you choose to do the optional overload or "spurt" test you can use the same setup as used for the 100% capacity test.

You should resist the temptation to reduce the length of the hose lays.  Some friction loss is needed to maintain the pressure differential between the pump and the tip.  However, if you are having problems getting enough pressure on the master gauge but can easily make the proper flows, hose can be added to the layout.  The added friction loss can actually help.

 

750 GPM Rated Pump Using 20' of 4-1/2" Suction Hose

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 750 2 each, 2-1/2" x 100' 1-3/4 68 750
70% 200 525 1 each, 2-1/2" x 100' 1-1/2 64 534
50% 250 375 1 each, 2-1/2" x 100' 1-1/4" 68 382



1000 GPM Rated Pump Using 20' of 5" Suction Hose

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 1000 3 each, 2-1/2" x 100' 2" 72 1008
70% 200 700 2 each, 2-1/2" x 100' 1-3/4" 60 704
50% 250 500 1 each, 2-1/2" x 100' 1-1/2" 58 508


1250 GPM Rated Pump Using 20' of 6" Suction Hose

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 1250 4 each, 2-1/2" x 100' 2-1/4" 70 1260
70% 200 875 3 each, 2-1/2" x 100' 2" 56 889
50% 250 625 2 each, 2-1/2" x 100' 1-3/4" 48 630


   
1500 GPM Rated Pump Using 20' of 6" Suction Hose

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 1500 4 each, 2-1/2" x 100' 2-1/2" 66 1510
70% 200 1050 3 each, 2-1/2" x 100' 2" 78 1050
50% 250 750 2 each, 2-1/2" x 100' 1-3/4" 68 750



1750 GPM Rated Pump Using TWO Master Streams and DUAL 20' Long 6" Suction Hoses

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 1750 4 each, 2-1/2" x 100' (2) 2" 55 1760
70% 200 1250 4 each, 2-1/2" x 100' (2)1-3/4 48 1260
50% 250 875 3 each, 2-1/2" x 100' (1) 2" 54 873


2000 GPM Rated Pump Using TWO Master Streams and DUAL 20' Long 6" Suction Hoses

Test Pump Press GPM Hose Layout Tip Size Pitot Actual Flow
100% 150 2000 4 each, 2-1/2" x 100' (2) 2" 71 2002
70% 200 1400 4 each, 2-1/2" x 100' (2) 1-3/4" 60 1408
50% 250 1000 4 each, 2-1/2" x 100' (2) 1-1/2" 56 1001

 


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Copyright 2006 David's Fire Equipment
Last modified: 03/27/12