Shurflo 12V 45 PSI 4009 Pump, 113 LPM – 4009-101-B87, 1 Year Warranty SHURflo's 4009 Series fresh water pump design was created with a unique one-piece diaphragm and internal bypass, assuring long life and top performance in all plumbing systems Designed as the next legendarypump to exceed the expectations of customers, the 4009 series pump is constructed for high flow demand, low noise and no rapid cycling SHURflo's quality reputation has been built on the reliability anddependability of every pump they build The 4009 series fresh water automatic demand pump is super quiet, thermally protected and can run dry without damage Features: Internal bypass will prevent rapid cycling C-Tick approved 4 chamber diaphragm, Shut-off 45psi