QC ADJ CHEM INJECTOR ASSY 2-3GPM 1.8mm

SKU: 4603

QC ADJ CHEM INJECTOR ASSY 2-3GPM 1.8mm — an adjustable downstream chemical injector sized for 2-3 GPM pressure washers. The 1.8mm orifice is matched to smaller pumps: it creates the venturi draw that pulls detergent into the water stream at low pressure, so soap-and-rinse cycles work without running chemical through the pump. At 2-3 GPM you are typically running a compact electric or small gas machine — this 1.8mm size keeps the chemical draw strong where a larger orifice would go weak. How to choose: match the injector orifice to your pump's flow — 1.8mm for 2-3 GPM machines (SKU 4603), 2.1mm for 3-5 GPM machines (SKU 4604), 2.3mm for 5-8 GPM machines (SKU 4605). An injector sized for a bigger machine won't draw chemical properly on a small pump, and an undersized one restricts a high-flow pump. Sold by CheapPartz as SKU 4603.