OFD Hydraulic SOP's.txt
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GPM Formula
29.7 D^{2 }sqrt{NP}

Friction Loss Formula
 2Q^{2 }+ Q
 1. Q = GPM /100
 2. If GPM is less than 100 use 2Q^{2} + 1/2Q

SmoothBore Handline Nozzle Pressure
50 PSI

Smoothbore Master Stream Nozzle Pressure
80 PSI

All Fog Nozzles NP
100 PSI

Handline
GPM for 1/2 tip @ 50 PSI
50 GPM

Handline
GPM for 5/8" tip @ 50 psi
80 GPM

Handline
GPM for 3/4" tip @ 50 psi
120 GPM

Handline
GPM for 7/8" tip @ 50 psi
160 GPM

Handline
GPM for 15/16" tip @ 50 psi
185 GPM

Handline
GPM for 1" tip @50 psi
200 GPM

Handline
GPM for 1 1/8" tip @ 50 psi
250 GPM

Handline
GPM for 1 1/4" tip @ 50 psi
325 GPM

Master Stream
GPM for 1 1/4" tip @ 80 psi
400 GPM

Master Stream
GPM for 1 3/8" tip @ 80 psi
500 GPM

Master Stream
GPM for 1 1/2" tip @ 80 psi
600 GPM

Master Stream
GPM for 1 5/8" tip @ 80 psi
700 GPM

Master Stream
GPM for 1 3/4" tip @ 80 psi
800 GPM

Master Stream
GPM for 2" tip @ 80 psi
1000 GPM

Tiller ladder pipe fog nozzle
calculate @ _____ GPM
1000 GPM

13/4" Preconnect
1. GPM
2. PSI

21/2" Preconnect
1. GPM
2. PSI

1" Boosterline
1. GPM
2. PSI

13/4" High Rise pack with 15/16" tip
1. GPM
2. PSI
3. FL per 100'
4. Gated Wye
5. NP
 1. 185 GPM
 2. 92 PSI
 3. 32 PSI FL
 4. 10 PSI
 5. 50 PSI NP

21/2" High Rise pack with 11/8" tip
1. GPM
2. PSI
3. FL per 100'
4. NP
 1. 250 GPM
 2. 65 PSI
 3. 15 PSI
 4. 50 PSI

FL Constant for Head Pressure
1/2 PSI per foot

FL Constant per Story (Loss/Gain)
5 PSI

FL Constant for Wye/Siamese
10 PSI

FL for Masterstream Appliance w/portable base monitor.
25 PSI + Nozzle

FL for Masterstream Mounted on Engine (Deck Gun)
25 PSI + Nozzle



FL for Sprinkler connection
150 PSI

FL for Tiller Aerial
110 PSI + Nozzle

Hose Conversion Factor
1" to 21/2"
GPM x 11

Hose Conversion Factor
11/2" to 21/2"
GPM x 4

Hose Conversion Factor
13/4" to 21/2"
GPM x 2

Hose Conversion Factor
4" to 21/2"
GPM x .3

Hose Conversion Factor
31/2" to 21/2"
GPM x .4

Portable Foam Eductor for Class A Foam
Direct attack
Overhaul
Exposure Protection
Brush (pretreat)
 Direct attack ............ 0.3%  0.5%
 Overhaul ................. 0.2%  0.4%
 Exposure Protection .. 1.0%
 Brush (pretreat) ....... 0.7%  1.0%

Portable Foam Eductor
Class B foam set eductor at?
3%

Portable Foam Eductor
1. Length of Hoseline
2. Pump at what pressure
3. Nozzles must be ____ ____ for foam
 1. 150' to 300'
 2. 200 PSI
 3. Open Full

Relay Pumping Guidelines
Recommended hose?
Max PSI Discharge Pressure?
Minimum residual intake pressure?

Relay Pumping 4" Hose
How far can 600 GPM be pumped
2300 feet
 (600 GPM has 8 PSL FL)
 (8 PSI x 23 = 184 PSI leaving 16 PSI residual)

Relay Pumping 4" Hose
How far can 750 GPM be pumped
1500 feet
 (750 GPM has 12 PSI FL)
 (12 PSI x 15 =180 PSI, leaving 20 PSI residual)

Relay Pumping 4" Hose
How far can 100 GPM be pumped?
900 feet
 (1000 GPM has 21 PSI FL)
 (21 x 9 = 189 PSI leaving 11 PSI residual)

Relay Pumping 2 1/2" Hose
How far can 250 GPM be pumped?
 1200 feet
 (250 GPM has 15 PSI FL)
 (15 PSI x 12 = 180 PSI leaving 20 PSI residual)

Relay Pumping 2 1/2" Hose
How far can 325 GPM be pumped?
 700 feet
 (325 GPM has 25 PSI FL)
 (25 PSI x 7 = 175 PSI leaving 25 PSI residual)

Relay Pumping 2 1/2" Hose
How far can 400 GPM be pumped?
500 ft
 (400 GPM has 36 PSI FL)
 (36 PSI x 5 = 180 PSI leaving 20 PSI residual)

Transfer Valve
Stored in which Mode?
Pressure (series) Position

Transfer Valve
Switch to volume (parallel) when?
1
2
3
4 (New)
 1 Pumping more than 50% of pump's capacity
 2 When pumping to sprinkler system
 3 At draft
 4 Needed to prevent excesses pressures