Suttner ST160 Chemical Injector (Venturi)

German-made. Built for precision.

Take the guesswork out of chemical application with the Suttner ST160 Injector – a quality-built venturi injector that automatically draws chemical into the water stream when your water blaster is set to low pressure. It’s a proven performer across industries like house washing, agriculture, vehicle cleaning, and food processing.

Made in Germany by RM Suttner, this injector is designed to deliver reliable, accurate chemical dosing every time – helping you get the job done faster and with less waste.

If you’re unsure which size will suit your machine, just give us a call – we’re happy to help you match it to your water blaster.

Specifications

• Material: Stainless
• Nozzle sizes: 1.8 to 2.3 available
• Inlet: 3/8″ Female
• Outlet: 3/8″ Male
• Chemical hose tail: 9 mm
• Max pressure: 350 bar
• Max temperature: 90°C

Why Choose the ST160 Injector?

• Consistent chemical draw: Get reliable chemical flow without manual mixing.
• Simple, rugged design: Easy to install, easy to maintain, built to last.
• Versatile: Works with a range of chemicals and setups.
• Trusted quality: Designed and manufactured in Germany by RM Suttner.

Whether you’re foaming down a truck fleet or soft washing a roof, the ST160 gives you reliable chemical injection with no fuss.

Suttner ST160 Chemical Injector – Precision for Softwash, Foaming & Downstream Applications

The Suttner ST160 is a high-performance chemical injector, also known as a venturi, designed to deliver consistent and efficient chemical dosing for softwash, foaming, and downstream injector setups. Whether you’re cleaning roofs, washing down vehicles, or applying detergents for commercial surface cleaning, the ST160 is a reliable tool that helps you get professional results, fast.

Manufactured in Germany by RM Suttner, this injector is known for its durable build quality, smart design, and ability to work under high pressure (up to 350 bar). It’s trusted by water blaster operators across industries – from roof cleaning specialists and house washers to agriculture and food-processing contractors.

Two Key Uses: Downstream Injecting & Foaming

The ST160 is ideal for two main types of chemical application:

1. Downstream Injecting (Softwash):

In a downstream setup, the injector is installed after the pump. When you switch your water blaster to low pressure, the ST160 uses venturi action to draw chemical into the water flow. This makes it perfect for softwash applications where lower pressure and chemical mixing are essential—such as roof cleaning, exterior walls, or delicate surfaces.

2. Foaming Applications:

For foaming, the ST160 can be tuned to work with a foaming lance or attachment, delivering thick, even foam coverage for cleaning vehicles, equipment, or surfaces. Proper foam generation relies on both chemical concentration and air mixing, so having the correct injector setup is key.

Custom Setup Based on Your Water Blaster

One of the most important things to know about the ST160 is that its internal components must be matched to your water blaster’s flow rate and intended use.

There are internal nozzle and orifice combinations that determine:

• The rate of chemical draw
• Whether the injector is suited for foaming or downstream injecting
• Compatibility with different flow rates (litres per minute) and pressures

For this reason, we strongly recommend giving us a call before purchasing, so we can set it up correctly for your machine. Getting the setup right means you’ll get reliable chemical draw, proper dilution, and avoid wasted time or inconsistent performance.

Key Benefits of the ST160

• Consistent Chemical Flow: Reliable venturi action ensures smooth, continuous dosing.
• Customisable: Internal setup tailored to your pump’s LPM and application (foaming or softwash).
• Built to Last: Heavy-duty construction withstands up to 350 bar and 90°C.
• Quick-Connect Ready: 3/8″ connections make integration simple.
• German Engineering: Designed and built by Suttner, a trusted name in professional cleaning gear.
• Versatile: Works with bleach, degreasers, detergents, and foam solutions.

Perfect For:

• Softwash and roof cleaning specialists
• House washing and building maintenance
• Agriculture and horticulture spraying
• Fleet and machinery cleaning
• Food industry sanitising and rinsing

Need Help Choosing the Right Size?

The ST160 isn’t a one-size-fits-all solution. Its performance depends on the correct internal components based on your pump’s specs and whether you’re using it for foaming or downstream injection. Contact our team—we’re happy to help you select the right configuration so it works properly straight out of the box.