Standard Features Durable Powder Coated Frame Electric Start (41--435 & 41-440) Fuel Efficient Combustion Chamber Hour Meter Pressure Atomized Burner Pressure Relief Valve Quick Coupled Nozzles Removable Poly Fuel Tank Roll Cage Frame Schedule 80 Steel Pipe Coil Shock Absorbing Engine Base Stainless Steel Combustion Chamber Stainless Steel Nozzles Trigger Gun Control Triplex Ceramic Plunger Pump Variable Pressure Wand (41-425 & 41-435) Vertical Fired Coil Wire Braid Discharge Hose Vanguard Engine (41-440) Honda Engine (41-425 & 41-435) Low Oil Engine Protection 18 Amp Charging System 12V Ignition System Water Separating Fuel Filter High Limit Temperature Shut Off Flow Actuated Shut Off Switch Thermal Pump Protection Downstream Chemical Injection Stainless Steel Side Panels Four Wheel Kit Pneumatic Tires on Standard Dish Wheels Model 41-425 41-435 41-440 Flow Output (GPM) 3.5 3.8 4 Pressure Ratings (PSI) 2500 3500 4000 Max Operating Temperature (°F) 200° 200° 200° Heat Rise (°F) 145° 145° 145° Cleaning Comparison Index 16,190 20,800 23,405 Engine Horsepower 9 13 16 Engine Fuel Gas Gas Gas Fuel Capacity (US Gal.) 1 1.25 2.25 Oil Fired Burner System Operating Fuel Oil Oil Oil Input BTU's 384,000 384,000 384,000 Consumption (GPH) 1.4 1.6 1.6 Burner Fuel Capacity 7.4 7.4 7.4 Burner Voltage 12V 12V 12V Stack Size 8" 8" 8" Discharge Hose 3/8"x50' 3/8"x50' 3/8"x50' Length 39" 39" 39" Width 26" 26" 26" Height 42" 42" 42" Approximate Weight (lbs) 470 500 515