Fill Rite FR1204H Electric Drum Pump, 12 V DC, 1 4 hp HP, 15 gpm Max. Flow Rate, Pump Only, Cast Iron, Bung G0062571 Material Steel Finish Unfinished Mounting Material Steel Finish Unfinished Mounting Hole Center to Center 200 mm For Use With Linear Shafting System of Measurement Metric Rail End to Hole 100 mm Support Rail Material Steel Shaft Material Grade 1018 Support Rail Material Grade 1018 Support Rail Drilling Undrilled Standards ISO Product Type Low Support Rail Shaft Material Carbon Steel Series LSRM Profile Type Low Profile Mounting Surface to Shaft Center 25 so they're good for water and humid air applications Suction Tube OD 1 in Gasoline Duty Cycle 30 Minutes On 30 Minutes Off Metered No Bypass Valve Yes Bearing Type Adjustable Standards cULus Pressure Range 16 psi Adapter Material Cast Iron Motor Enclosure Explosion Proof Agency Compliance cULus Wetted Materials Buna N