Fuel Pump Pressure Chart
Nozzle Rate at Increased Pump Pressures
|
Rate 100 PSI |
125 PSI |
140 PSI |
150 PSI |
175 PSI |
200 PSI |
250 PSI |
275 PSI |
300 PSI |
| .40 |
.45 |
.47 |
.49 |
.53 |
.56 |
.63 |
.66 |
.69 |
| .50 |
.56 |
.59 |
.61 |
.66 |
.71 |
.79 |
.83 |
.87 |
| .60 |
.67 |
.71 |
.74 |
.79 |
.85 |
.95 |
1.00 |
1.04 |
| .65 |
.73 |
.77 |
.80 |
.86 |
.92 |
1.03 |
1.08 |
1.13 |
| .75 |
.84 |
.89 |
.92 |
.99 |
1.06 |
1.19 |
1.24 |
1.30 |
| .85 |
.95 |
1.01 |
1.04 |
1.13 |
1.20 |
1.34 |
1.41 |
1.47 |
| .90 |
1.01 |
1.07 |
1.10 |
1.19 |
1.27 |
1.42 |
1.49 |
1.56 |
| 1.00 |
1.12 |
1.18 |
1.23 |
1.32 |
1.41 |
1.58 |
1.66 |
1.73 |
| 1.10 |
1.23 |
1.30 |
1.35 |
1.46 |
1.56 |
1.74 |
1.82 |
1.91 |
| 1.20 |
1.34 |
1.42 |
1.47 |
1.59 |
1.70 |
1.90 |
1.99 |
2.08 |
| 1.25 |
1.39 |
1.48 |
1.53 |
1.65 |
1.77 |
1.98 |
2.07 |
2.17 |
| 1.35 |
1.51 |
1.60 |
1.65 |
1.79 |
1.91 |
2.14 |
2.24 |
2.34 |
| 1.50 |
1.68 |
1.77 |
1.84 |
1.98 |
2.12 |
2.37 |
2.49 |
2.60 |
| 1.65 |
1.84 |
1.95 |
2.02 |
2.18 |
2.33 |
2.61 |
2.73 |
2.86 |
| 1.75 |
1.96 |
2.07 |
2.14 |
2.32 |
2.48 |
2.77 |
2.90 |
3.03 |
| 2.00 |
2.24 |
2.37 |
2.45 |
2.65 |
2.83 |
3.16 |
3.32 |
3.46 |
| 2.25 |
2.52 |
2.66 |
2.76 |
2.98 |
3.18 |
3.56 |
3.73 |
3.90 |
| 2.50 |
2.80 |
2.96 |
3.06 |
3.31 |
3.54 |
3.95 |
4.15 |
4.33 |
| 2.75 |
3.07 |
3.25 |
3.37 |
3.64 |
3.90 |
4.35 |
4.56 |
4.76 |
| 3.00 |
3.35 |
3.55 |
3.67 |
3.97 |
4.24 |
4.74 |
4.97 |
5.20 |
| 3.25 |
3.63 |
3.85 |
3.98 |
4.30 |
4.60 |
5.14 |
5.39 |
5.63 |
| 3.50 |
3.91 |
4.14 |
4.29 |
4.63 |
4.95 |
5.53 |
5.80 |
6.06 |
| 3.75 |
4.19 |
4.44 |
4.59 |
4.96 |
5.30 |
5.93 |
6.22 |
6.50 |
| 4.00 |
4.47 |
4.73 |
4.90 |
5.29 |
5.66 |
6.32 |
6.83 |
6.93 |
| 4.50 |
5.04 |
5.32 |
5.51 |
5.95 |
6.36 |
7.11 |
7.46 |
7.79 |
| 5.00 |
5.59 |
5.92 |
6.12 |
6.61 |
7.07 |
7.91 |
8.29 |
8.66 |
| 5.50 |
6.15 |
6.51 |
6.74 |
7.27 |
7.78 |
8.70 |
9.12 |
9.53 |
| 6.00 |
6.71 |
7.10 |
7.35 |
7.94 |
8.49 |
9.49 |
9.95 |
10.39 |
Calculating Nozzle Rate
Divide the new pump pressure by the pressure the nozzle is rated at (100) then take the square root of the answer and multiply it by the GPH stamped on the nozzle.
1st Example-
Pump pressure is 140 psi
Rated pressure is 100 psi
The nozzle size is 1 GPH
140 ÷ 100 = 1.4 √ 1.832159 × 1 = 1.18 GPH
2nd Example-
Pump pressure is 140 psi
Rated pressure is 100 psi
The nozzle size is .75 GPH
140 ÷ 100 = 1.4 √ 1.832159 × .75 = .89 GPH
Ok, one more time. This time at 160 psi pump pressure and a 1.25 GPH nozzle.
160 ÷ 100 = 1.6 √ 1.264911 × 1.25 = 1.58 GPH
Disclaimer: The information found on this website is for informational purposes only. Any and all preventive maintenance, service, installations should be reviewed on a per job situation. Any work performed on your heating system should be performed by qualified and experienced personnel only. Comfort-Calc or it's personnel accepts no responsibility for improper information, application, damage to property or bodily injury from applied information found on this website as it should be reviewed by a professional.
Beckett Heads and Firing Rates
| Head |
F0 |
F3 |
F6 |
F12 |
F22/F220 |
F31/F310 |
| Rate GPH |
|
|
|
|
|
|
| AF |
.50/.75 |
.75/1.25 |
.85/1.65 |
1.10/2.00 |
1.65/2.50 |
2.25/3.00 |
| SR |
.40/.75 |
.65/1.10 |
.85/1.50 |
1.00/1.65 |
1.35/2.00 |
. |
| SF |
. |
. |
. |
1.25/2.25 |
1.75/2.25 |
2.50/5.50 |
Disclaimer:
The information found on this website is for informational purposes only. Any and all preventive maintenance, service, installations should be reviewed on a per job situation. Any work performed on your heating system should be performed by qualified and experienced personnel only. Comfort-Calc or it's personnel accepts no responsibility for improper information, application, damage to property or bodily injury from applied information found on this website as it should be reviewed by a professional.
