0.5 inch mpt inlet/outlet viton valves santoprene diaphragm 45psi demand switch max flow: 3.2gpm 12.1lpm max psi: 40psi 2.8bar max draw: 0.98 These Shurflo 2088 Series pumps offer the same reliability as the 12 VDC version except in 115 or 230 VAC capacity. They are used in a variety of spot spraying, mini-bulk transfer and fertilizer applications that require flows of up to 3.2 GPM [12.1 L/min]. They are available in a variety of chemical-resistant materials. • Self-priming up to 12 vertical feet [3.7m] • Chemical-resistant materials • Can run dry without damage • Automatic demand • Built-in check valve (may vary by model) prevents back flow of fluid into the solution tank