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Jockey Pumps

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Automatic pump systems normally utilize two pumps. One is the main fire pump which delivers large volumes of water to the fire standpipe system in case of fire. The other is a low flow, high head jockey pump which keeps the system pressurized during normal non-fire conditions. Since the activation of the large flow main fire pump is triggered by a system pressure drop, it is very important to maintain system pressure since even normal plumbing leaks allow the system pressure to bleed down over a period of time. When the system pressure drops to a preset level, the jockey pump starts and charges the system back to normal pressure. In case of fire, sprinkler heads open and fire hose connections are utilized causing a rapid system pressure drop over and above what the jockey pump is capable of supplying. When the lower pressure limit of the main fire pump is reached, it starts up and provides the needed high flow for fire suppression. The majority of the MTH regenerative turbine standard product line is used in fire system jockey pump service, depending upon system size.

Fire System

60 Hz Jockey Pump Selection Chart

Pump Rating in GPM Jockey Pump GPM Jockey Pump System Pressure (psi)*
50 60 70 80 90 100 110 120 130 140 150
25 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
50 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
100 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
150 1.5 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
200 2 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
250 2.5 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
300 3 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41C-BF
1/3 HP
T41C-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41D-BF
3/4 HP
400 4 T41C-BF
1/3 HP
T41C-BF
1/3 HP
T41C-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/2 HP
T41D-BF
1/2 HP
T41D-BF
1/2 HP
T41D-BF
1/2 HP
T41D-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
1 HP
450 4.5 T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/2 HP
T41D-BF
1/2 HP
T41D-BF
1/2 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
1 HP
500 5 T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41D-BF
1/3 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41G
1 HP
750 7.5 T41E-BF
1/2 HP
T41G-BF
3/4 HP
T41G-BF
3/4 HP
T41G-BF
3/4 HP
T41G-BF
3/4 HP
T41J-BF
1 HP
T41J-BF
1 1/2 HP
T41J-BF
1 1/2 HP
T41J-BF
1 1/2 HP
T41J-BF
1 1/2 HP
T41L-BF
2 HP
1000 10 T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41L-BF
1 1/2 HP
T41L-BF
1 1/2 HP
T41L-BF
1 1/2 HP
T41L-BF
1 1/2 HP
T41M-BF
3 HP
T41M-BF
3 HP
T41M-BF
3 HP
1250 12.5 T41L-BF
3/4 HP
T41M-BF
1 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T41M-BF
2 HP
T51J-BF
3 HP
T51J-BF
3 HP
T51J-BF
3 HP
T51J-BF
3 HP
1500 15 T41L-BF
3/4 HP
T41M-BF
1 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T41P-BF
2 HP
T41P-BF
2 HP
T41P-BF
3 HP
T51L-BF
3 HP
T51L-BF
3 HP
T51L-BF
3 HP
T51L-BF
5 HP
2000 20 T41P-BF
1 1/2 HP
T41P-BF
1 1/2 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51P-BF
5 HP
T51P-BF
5 HP
2500 25 T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
5 HP
T51P-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
7.5 HP
3000 30 T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
7.5 HP
3500 35 T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
3 HP
T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
7.5 HP
184P-BF
7.5 HP
184R-BF
10 HP
161G-BF
10 HP
4000 40 T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
5 HP
T51S-BF
5 HP
151L-BF
7 1/2 HP
161G-BF
10 HP
161G-BF
10 HP
161G-BF
10 HP
161G-BF
10 HP
152L-BF
10 HP
*Selections include motor service factors.
This chart is for reference only and may not local codes and laws in all areas.

50 Hz Jockey Pump Selection Chart

Pump Rating in GPM Jockey Pump GPM Jockey Pump System Pressure (psi)*
50 60 70 80 90 100 110 120 130 140 150
25 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
50 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
100 1 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
T41B-BF
1/2 HP
150 1.5 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
3/4 HP
T41C-BF
3/4 HP
T41C-BF
3/4 HP
200 2 T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41B-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41D-BF
3/4 HP
T41D-BF
3/4 HP
T41D-BF
3/4 HP
250 2.5 T41C-BF
1/3 HP
T41C-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
1 HP
T41E-BF
1 HP
T41E-BF
1 HP
300 3 T41C-BF
1/3 HP
T41C-BF
1/3 HP
T41C-BF
1/2 HP
T41C-BF
1/2 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
1 HP
T51D-BF
1 HP
T51D-BF
1 HP
400 4 T41E-BF
1/2 HP
T41E-BF
1/2 HP
T41E-BF
1/2 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41G-BF
1 HP
T41G-BF
1 HP
T41J-BF
1 1/2 HP
T51E-BF
1 1/2 HP
T51E-BF
1 1/2 HP
450 4.5 T41E-BF
1/2 HP
T41E-BF
1/2 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41E-BF
3/4 HP
T41G-BF
1 HP
T41G-BF
1 HP
T41G-BF
1 HP
T41G-BF
1 HP
T51E-BF
1 1/2 HP
T51E-BF
1 1/2 HP
500 5 T41E-BF
1/2 HP
T41E-BF
1/2 HP
T41G-BF
3/4 HP
T41G-BF
3/4 HP
T41J-BF
1 HP
T41J-BF
1 HP
T41J-BF
1 1/2 HP
T41J-BF
1 1/2 HP
T51E-BF
1 1/2 HP
T51E-BF
1 1/2 HP
T51E-BF
1 1/2 HP
750 7.5 T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41J-BF
3/4 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T51G-BF
2 HP
T51G-BF
2 HP
T51G-BF
2 HP
T51G-BF
2 HP
T51G-BF
2 HP
1000 10 T41L-BF
1 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T41M-BF
1 1/2 HP
T51J-BF
2 HP
T51J-BF
2 HP
T51L-BF
3 HP
T51L-BF
3 HP
T51L-BF
3 HP
T51L-BF
3 HP
T51L-BF
3 HP
1250 12.5 T41M-BF
1 HP
T51L-BF
2 HP
T51L-BF
2 HP
T51L-BF
2 HP
T51L-BF
2 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
1500 15 T51M-BF
2 HP
T51M-BF
2 HP
T51M-BF
2 HP
T51M-BF
2 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51M-BF
3 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
2000 20 T51P-BF
2 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51P-BF
3 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
T51R-BF
5 HP
2500 25 T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
3 HP
T51R-BF
5 HP
T51R-BF
5 HP
162D-BF
5 HP
162D-BF
5 HP
162D-BF
5 HP
152K-BF
7 1/2 HP
152K-BF
7 1/2 HP
3000 30 T51S-BF
3 HP
T51S-BF
3 HP
T51S-BF
5 HP
T51S-BF
5 HP
152K-BF
5 HP
152K-BF
5 HP
162E-BF
7 1/2 HP
162E-BF
7 1/2 HP
162E-BF
7 1/2 HP
162E-BF
7 1/2 HP
162F-BF
10 HP
3500 35 T51S-BF
3 HP
161E-BF
5 HP
161G-BF
5 HP
162E-BF
5 HP
162E-BF
7 1/2 HP
162E-BF
7 1/2 HP
163E-BF
7 1/2 HP
162F-BF
10 HP
162G-BF
10 HP
162G-BF
10 HP
162G-BF
10 HP
4000 40 161E-BF
3 HP
162E-BF
5 HP
162E-BF
5 HP
162E-BF
5 HP
162G-BF
7 1/2 HP
162G-BF
7 1/2 HP
162G-BF
7 1/2 HP
162G-BF
10 HP
162G-BF
10 HP
162G-BF
10 HP
162G-BF
10 HP
*Selections are at 1.0 motor service factors.
This chart is for reference only and may not local codes and laws in all areas.

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