Shurflo by Pentair BLASTERII Washdown Kit - 12VDC, 3.5GPM w/25 Hose, Nozzle, Strainer Fittings [4338-121-E07]BLASTER II Washdown Pump Kit 12 VDC 3. 5 GPM w 25' Hose, Nozzle, Strainer & Fittings SHURFLO's 4338 series wash down pump design was created with a 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 expectations of our customers, the BLASTER II Series pumps are designed for the toughest marine wash down applications. SHURFLO's