Power SprayerDetails: Model:3WZ-55B Plunger no.x Dia.:3pcs*22mm Power:2-3HP Weight:9.5Kg Output:18-26L/MIN Pressure:20-35PAR Size(mm):370(L)*280(W)*340(H). Pump Features Castiron pump head Casting aluminium housing Stainless steel air chamber Pressure adjustable Staomless steel plunger Heavy-duty plunger sealing set Optional components Casting brass pump head Heat-treament plunger Ceramic Plunger Brass V-packing seat Stainless steel valves Copper oil cup