ShurFlo Automatic Demand Pump - 12 VDC 1.0 GPM open flow, Viton valves, Santoprene diaphragm, 40 PSI Demand Switch, 3/8" Barb ports Integral on/off switch included Features Automatic demand; 25 PSI [1.72 bar] on / 40 PSI [2.8 bar] off" Self priming up to 2.5 vertical feet [.76m] Long life pressure switch Santoprene diaphragm, Viton valves Thermally protected ball bearing motor with splash proof housing Internal fan radiates heat; external heat sink not required Integral on/off switch optional New from SHURflo, the SLV is ideal for low volume intermittent duty applications requiring a compact pump with low power consumption. Unique design has no metals in the fluid path for maximum chemical resistance. Big pump features include automatic demand operation and elastomers that handle a wide variety of chemicals. Perfect for low volume spraying and transfer. Cost effective yet with high performance and reliability; the SLV offers tremendous value.