Air injector for R+M low pressure brush, DN 2.5mm, 1/4"M - 1/4"F, 34l/min [108 290 20]

Product Description

Precise Chemical Aeration for Efficient Brush Washing at Self-Service Car Washes

Original air injector from the renowned German brand R+M / Suttner (SKU: 108 290 20), engineered specifically for low-pressure systems in touchless and self-service car washes. This component is responsible for automatically drawing ambient air and mixing it with the chemical solution stream right before it feeds into the brush lance. Featuring a DN 2.5 mm nozzle orifice and a flow capacity of 34 l/min, the injector produces a dense, stable foam with exceptional cleaning and lubricating properties. This drastically reduces the risk of scratching vehicle paint during mechanical washing while significantly lowering water and chemical consumption. Looking for other wash bay components? Explore our full catalog of car wash spare parts.

Key Features and Technical Specifications of the R+M 108 290 20 Air Injector:

• Optimal Solution Aeration: Utilizes the efficient Venturi effect to draw in air through a side port without requiring an external compressed air supply, ensuring perfectly foamed mixture on the brush bristles.
• Standard 1/4" Connections: Features a universal 1/4"M male thread on one end and a 1/4"F female thread on the other, allowing easy inline mounting near the lance, spray gun, or supply line of the low-pressure brush.
• Calibrated DN 2.5 mm Internal Nozzle: Precision-sized orifice guarantees a water flow rate of 34 l/min while maintaining optimal flow dynamics and chemical mixing ratios.
• Durable and Reliable Construction: Built with robust materials resistant to mechanical wear, impacts, and continuous exposure to both alkaline and acidic car wash detergents. Check out our chemical lineup recommended for brush programs, such as Duo 2in1 washing liquid and Turbo Plus shampoo.
• Enhanced Washing Performance & Paint Protection: The generated foam creates a rich lubricating layer for the brush bristles, helping float away grit particles and protecting vehicle paintwork. Learn more about effective washing techniques in our guide on car wash maintenance tips.

Applications in Touchless Car Wash Technology:

• Foaming and chemical delivery systems for "BRUSH WASH" programs in self-service car wash bays.
• Low-pressure foaming lances and pre-spray guns for cars, vans, and commercial vehicles.
• Upgrading foam delivery circuits inside car wash technical cabinets — see also how to care for valves and chemical dosing in our article on choosing solenoid valves for car washes.