HomeMy WebLinkAbout303.003- Hale Muscle Pumps Operating and Maintenance
Effective Date: October 2007 Robert J. Garcia, Engineer
Current Revision Date: 05/27/2025 Section 303.003
Next Revision (1) Date: 05/27/2027 Page 1 of 2
Fresno City Fire Department
300 Training and Equipment Manual
SECTION 303.003 HALE MUSCLE PUMPS OPERATING AND MAINTENANCE
PURPOSE
To provide information on the Hale Muscle Pump located on Fresno Fire Department
(FFD) Apparatus.
APPLICATION
FFD engines and water tenders are equipped with Hale Single Stage Muscle Pumps.
Engines are equipped with the Single Stage Qmax pump, while water tenders are
equipped with the Single Stage Qflo pump.
OPERATIONAL POLICY
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OPERATIONAL GUIDELINE
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PROCESS
Please refer to the Training and Equipment Manual Section 313.005, Standard Pump
Operation for proper pump operation.
INFORMATION
Hale single-stage pumps use a single impeller to develop the required volume and
pressure. Water enters the suction channels on both sides of the impeller, which
maintains axial balance. Dual cutwaters on the Qmax strip water from the rotating
impeller and direct it to the discharge path.
Effective Date: October 2007 Robert J. Garcia, Engineer
Current Revision Date: 05/27/2025 Section 303.003
Next Revision (1) Date: 05/27/2027 Page 2 of 2
The Qflo pump utilizes an impeller with a single suction channel where water enters.
The impeller develops discharge pressure and directs the water to a single cutwater
and then to the discharge valves. The impellers are radially and axially balanced.
Radial hydraulic balance in the Qmax and Qflo is maintained by the opposed
discharge volute cutwaters. The cutwaters are wedge shaped and divide the water
between the volute and the pump discharge.
For more information, access the Operating and Maintenance Manual at the following
link: Hale Muscle Pump Operating and Maintenance Manual.
DEFINITIONS
Cutwater Water
Volute
CROSS-REFERENCES
Training and Equipment Manual
Section 313.005, Standard Pump Operation
Section 313.007, Change-Over from Tank to Hydrant
Section 313.008, Tank Supply from another Engine