SHURFLO
BLASTER
®
MARINE WASH DOWN PUMP
MODEL SERIES 4238 & 4338
SHURFLO BLASTER™ II Designed for the toughest wash down applications.
SHURFLO's BLASTER™ II wash down pump design was created with unique over-molded single-piece diaphragm, assuring long
life and top performance in all deck wash down plumbing systems. Designed as the next legendary pump to exceed the expec-
tations of our customers, the BLASTER™ II pumps are designed for the toughest marine wash down applications. SHURFLO's
quality reputation has been built on the reliability and dependability of every pump we build. The BLASTER™ II wash down auto-
matic demand pumps are quiet, thermally protected and can run dry without damage.
INSTALLATION TIPS
❚ Properly sized plumbing
❚ Properly sized wiring
❚ Mount in a dry location that allows
easy access if maintenance is required
❚ Mount higher than the outside water
level, the pump is capable of 6ft. vertical
prime above water line
❚ Use proper fuse size
❚ Install strainer on pump inlet
❚ Minimize plumbing elbows and valves
❚ Flexible high-pressure hose on inlet
and outlet
911-1047 REV. B
II 3.5 GPM
™
OPERATION TIPS
❚ Pump is design for intermittent op-
eration only
❚ Turn off power to the pump when boat
is unattended
❚ Maintain your strainer clean for ulti-
mate pump performance
❚ Pump will perform at best when
proper voltage is provided
FEATURES
❚ 4 independent chambers
❚ Co-Molded diaphragm
❚ Adjustable pressure switch
❚ Self-priming up to 6 feet
❚ Sealed switch
❚ Sealed motor
❚ Corrosion resistance electro coated
motor
❚ Thermally protected
❚ Ignition protected, CE
APPLICATION
❚ Marine 12V DC or 24V DC systems –
see pump label for rated voltage
❚ Wash Down applications
❚ General water transfer
1
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