Product details:

SHURflo 12v pump delivers 45 psi. and up to 3 gpm with 1/2" male ports Quiet operating SHURflo 12V pump is ideal for heavy-duty uses including agricultural spraying and transfer applications. Positive displacement three chamber diaphragm pump with check valve to prevent reverse flow. SHURflo 12v pump mounts in any direction. Viton; valves and Santoprene diaphragm to resist corrosion. SHURflo 12v pump weighs 4.8 lbs. USA made.Self-Priming up to 12 Vertical Feet [3.7M]
Chemically Resistant Materials
Automatic Demand
Built-In Check Valve (May Vary by Model) to Prevent Back Flow of Fluid
Supported for agriculture