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WATER BOOST SYSTEMS 

 

 

911-462 Rev.K  8/06 ECO 12790 

 

4 of 4 

 

911-462 Rev. K  8/06 ECO 12790 

 

1 of 4

 

 

INLET/OUTLET FITTINGS: 

 3/8" [9.5 mm] Barb Fittings 

 

PUMP SPECS 

 

INSTALLATION AND OPERATION MANUAL 

Model Number   

8025-933-399 

8025-933-236 

Motor Design 

115 VAC 60 Hz permanent magnet; thermally protected and a non-replaceable integral fuse 

Duty Cycle 

Intermittent (max. run time 20 min. within one hour) 

 

Turn-On/Off  Pressure 

70 PSI  [4.8 bar]  /  90 PSI  [6.2 bar] 

40 PSI [2.8 bar]  /  60 PSI [4.1 bar] 

 

Max. inlet pressure 

30 psi [2 bar] 

 

Check Valve  

Internal (prevent reverse flow) 

 

Temp. Limits 

34 º - 170 º F [1.1 º - 49 º C] 

Pump materials 

EPDM valves, Santoprene diaphragm, Nylon hosing 

TANK SPECS 

MINI MEDIUM 

MAXI 

Total Volume (air/liquid) 

21 Oz. [ 0.62 lt] 

2 gal [7.6 lt] 

5 gal. [18.9 lt.] 

90 psi pump 

10 Oz. [ 0.3 lt] 

123 Oz. [3.6 lt.] 

307 Oz. [9.0 lt.] 

*Approx. Draw 
Down Vol. 

60 psi pump 

5.6 Oz. [ 0.17 lt] 

68 Oz. [2 lt.] 

171.5 Oz. [5.1lt.] 

Bladder Material: 

Butyl  

Butyl 

Butyl 

Housing Material 

Glass Filled Nylon 

Stainless Steel 

Epoxy coated steel 

 

Draw down volume varies with tank pre-charge, pump operating pressure and city water pressure. Specs reflect 

tests at 40 psi [2.7 bar] pre-charge w/20 psi [1.3 bar] city water pressure. 

 

WATER BOOST SYSTEM LIMITED WARRANTY 

SHURflo Water Boost Systems are warranted to be free of defects in material and workmanship under normal use, 
for a period of one (1) year from the date of manufacture, or one (1) year of use, with proof of purchase.  This 
limited warranty will not exceed two (2) years, in any event. 
The limited warranty will not apply to Water Boost Systems that were improperly installed, misapplied, or 
incompatible with fluids or components not manufactured by SHURflo.  Water Boost System failure due to foreign 
debris is not covered under the terms of this limited warranty.  SHURflo will not warrant any Water Boost System 
which is damaged or modified outside the SHURflo factory. 
Returns are to be shipped postage prepaid to either service center; SHURflo Garden Grove, CA or Elkhart, IN.  
SHURflo shall not be liable for freight damage incurred during shipping, package returns carefully. 
For complete warranty details consult S/B #1049.

 

 

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ISO Certified Facility

 

 

 

SHURflo reserves the right to update specifications, prices, or make substitutions.

 

SHURflo 

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5900 Katella Ave. 

Cypress, CA  90630 

(800) 854-3218  (562) 795-5200  

FAX  (562) 795-7564 

Shipping/UPS:

 5900 Katella Ave Bldg. B 

Cypress, CA   90630

 

SHURflo East 

52748 Park Six Court,  

Elkhart, IN  46514-5427 

((800) 762-8094 

(574) 262-0478 

264-2169 

© 2006   Printed in USA

 

SHURflo Ltd.  

Unit 5  Sterling Park, Gatwick Road, 

Crawley, West Sussex, RH10 2QT 

United Kingdom 

+44 1293 424000 

FAX  +44 1293 421880

 

 

WARNING: 

“Risk of electrical shock.”  The pump is supplied with a grounding connector and grounding-type 

attachment plug.  To reduce the risk of electrical shock, be certain that it is connected only to a 
properly grounded, grounding-type receptacle.  To prevent electrical shock, disconnect power 
before initiating any work.  In the case of pump failure, the motor housing and/or the pumped fluid 
may carry high voltage to components normally considered safe.    

CAUTION:

 

DO NOT

 adjust the pump pressure switch setting.  Switch setting will not significantly alter flow 

rate or pressure.  Improper adjustment may cause severe overload or premature failure,

 not covered 

under warranty.

  

CAUTION:

 

DO NOT 

operate the pump at pressures, which cause the motor to exceed the amperes rating 

indicated on the nameplate.  The pump is equipped with thermal breakers to interrupt operation 
due to excessive heat.  Once the temperature of the motor is within proper limits it will 
automatically reset, and the pump

 will start operation without warning.

   

The motor is equipped 

with an integral non-serviceable fuse.  Pumps which have an “open” fuse are not covered under 
the limited warranty.

  

 

ACCUMULATOR STORAGE/FLOW-RATES 

SHURflo Water Boost Systems are for applications when low, fluctuating, or no water pressure exists.  The 
pump and accumulator maintain consistent water pressure to a source (for a given duration) as long as incoming 
water is sufficient.  Depending upon the Water Boost System model, support of up to 4 non-carbonated valves in 
moderate volume accounts is achievable.  The pump pressurizes the accumulator to 60 psi. or 90 psi. [4/6 bar], 
depending on the pump model.  Consult the models flowchart for projected length of flow and/or back-up.  Maxi 
Boost Systems may be used to supply water to a carbonator for back-up, during short periods of insufficient 
water pressure.    The pump is NSF, UL and C-UL listed. 

 

INSTALLATION 
CAUTION:

 

DO NOT 

pre-charge the accumulator with CO2. In the event of failure carbonated water will react 

with brass components in system equipment. 

CAUTION:

 a qualified electrician, in accordance with all local electrical codes should perform all Electrical 

outlet (receptacle) wiring connections.  Circuit protection is dependent on the individual application 
requirements.  Failure to provide proper circuit protection may result in a motor failure, 

which is not covered 

under warranty.

 

1.  The water booster system is to be installed between the water source and non-carbonated valve(s) or 

carbonator. Turn off city water supply before installation.

 

2.  Use NSF listed high pressure braided 3/8" ID [9.5 mm] tubing to connect the inlet/outlet ports.  Secured all 

tubing connections with SS, step-less Oetiker

 clamps. Cable-tie all tubing securely to prevent kinks or sags 

that can inhibit performance or cause damage to the pump. 

 

 

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