BISCO

Tech Reference

 

Air Pressure Loss in Ducting | Chemical Resistance Chart | Engineering Conversions |
Fluids Data | Water Pressure Loss in Piping


Air Pressure Loss in Ducting

Friction Loss per Foot of Tubing

Friction Loss per Foot of Tubing


Friction Loss in Fittings

Normal Pipe Size (inches) Equivalent Tubing Length (feet)
90° ELBOW 45° ELBOW
1 ј 3 1.5
1 Ѕ 4 2
2 5 2.5
2 Ѕ 6 3
3 7 4
4 10 5
5 12 6
6 15 7.5
8 20 10



Chemical Resistance Chart

Liquid Material
BRZ CST 304 316 PVC CPVC BUNA VIT TFE WN NR PYL NYL
Acetone R R R R N N N N R N N R* R
Alcohol, Ethyl R R R R R R R   R   R R  
Alcohol, Isopropyl R R R R         R   R R  
Ammonia Solutions N   R R         R   N    
Benzene R R R R N N N R R N N N R
Carbon Tetrachloride Wet N N N R R* R* N R R N N N R
Cutting Oils R R R R     R R R   N N R
Dichloroethane       N     N   R N   R R
Diesel Fuel R R R R R*   R R R   N R*  
Dry Cleaning Fluids N R R R     N R R N N    
Ethyl Benzene             N R R N N N R
Ethylene Dichloride         N   N R R N N R  
Fuel Oil R R R R     R R R   N    
Gasoline, Aviation R R R R R       R N   N R
Gasoline, Leaded R R R R R   R R R N   N R
Gasoline, Motor R R R R R   R R R N N N R
Gasoline, Unleaded R R R R R   R R R N   N R
Hydrochloric Acid N N N N R R   R R     R N
J P-4 Fuel R R R R R R* R R R N N    
J P-5 Fuel R R R R R R* N R R N N    
J P-6 Fuel R R R R     R R R N N    
Kerosene R R R R R R R R R   N R* R
Ketones R R R R     N   R N N R R
Methylene Chloride R R R R N   N   R N N N  
Mineral Spirits R R R R     R   R        
Napthalene R R R R N   N R R N N R  
Styrene R R R R     N   R N N    
Toluene R R R R N N N R R N N N R
Trichlor Ethylene R R R R N N N R R N N N R
Xylene R R R R N N N R R N N N R


 

Engineering Conversions


 

Fluids Data


Viscocity Conversion Table

Seconds Saybolt Universal (s.s.u.) Kinematic Viscosity Centistrokes Seconds Saybolt Furol (s.s.f.) Seconds Redwood 1 (standard) Seconds Redwood 2 (Admiralty)
31 1.00   29  
35 2.56   32.1  
40 4.30   36.2 5.10
50 7.40   44.3 5.83
60 10.3   52.3 6.77
70 13.1 12.95 60.9 7.60
80 15.7 13.70 69.2 8.44
90 18.2 14.4 77.6 9.30
100 20.6 15.24 85.6 10.12
150 32.1 19.30 128 14.48
200 43.2 23.5 170 18.90
250 54.0 28.0 212 23.45
300 65.0 32.5 254 28.0
400 87.6 41.9 338 37.1
500 110.0 51.6 423 46.2
600 132 61.4 508 55.4
700 154 71.1 592 64.6
800 176 81.0 677 73.8
900 198 91.0 762 83.0
1000 220 100.7 896 92.1
1500 330 150 1270 138.2
2000 440 200 1690 184.2
2500 550 250 2120 230
3000 660 300 2540 276
4000 880 400 3380 368
5000 1100 500 4230 461
6000 1320 600 5080 553
7000 1540 700 5920 645
8000 1760 800 6770 737
9000 1980 900 7620 829
10000 2200 1000 8460 921
15000 3300 1500 13700  
20000 4400 2000 18400  

 

Water Pressure Loss in Piping


Schedule 40 PVC Pipe

GPM GPH Pipe Size (inches)
1/2"
 3/4"
 1" 1.25" 1.5" 2" 2.5" 3" 4"
2 120 4.1
3 180 8.7 2.2
4 240 14.8 3.7
5 300 22.2 5.7 1.8
6 360 31.2 8.0 2.5
7 420 41.5 10.6 3.3
8 480 53.0 13.5 4.2
9 540 66.0 16.8 5.2
10 600 80.5 20.4 6.3 1.7
12 720 28.6 8.9 2.3 1.1
14 840 38.0 11.8 3.1 1.4
16 960 48.6 15.1 4.0 1.9
20 1200 60.5 22.8 6.0 2.8
25 1500 38.7 9.1 4.3 1.3
30 1800 12.7 6.0 1.8
35 2100 16.9 8.0 2.4
40 2400 21.6 10.2 3.0 1.1
45 2700 28.0 12.5 3.8 1.4
50 3000 15.4 4.6 1.7
55 3300 21.6 6.4 2.3
70 4200 28.7 8.5 3.0 1.2
80 4800 36.8 10.9 3.8 1.4
90 5400 45.7 13.6 4.8 1.8
100 6000 56.6 16.5 5.7 2.2
120 7200 23.1 8.0 3.0
140 8400 30.6 10.5 4.0 1.1
160 9600 39.3 13.4 5.0 1.4
200 12000 20.1 7.6 2.1
260 15600 32.4 12.2 3.4
320 18000 42.1 15.8 4.4


Valves and Fittings

Type and
Application 		Pipe and
Fitting 		Normal Size of Fitting And Pipe
1/2"" 3/4" 1" 1.25" 1.5 " 2" 2.5"
Equivalent Length of Pipe (inches)
Insert Coupling Plastic 3 3 3 3 3 3 3
Threaded Adapter
(Plastic to Thread)		 Plastic 3 3 3 3 3 3 3
90° Standard Elbow Steel 2 2 3 4 4 5 6
Plastic 2 2 3 4 4 5 6
Standard Tee
(Flow Through Run)		 Steel 1 2 2 3 3 4 4
Plastic 1 2 2 3 3 4 4
Standard Tee
(Flow Through Side)		 Steel 4 5 6 7 8 11 13
Plastic 4 5 6 7 8 11 13
Gate Valve* Steel 1 1 1 1 2 2 2
Swing Check Valve* Steel 5 7 9 12 13 17 21
*Friction loss figures are for screwed valves and are based on equivalent lengths of steel pipe