ST66 Chemical Metering Valve – Red Top & Numbered Disc

Product Overview

The ST66 Chemical Metering Valve (SKU: 200066501) is a professional chemical dosing valve designed for pressure washer systems, including Ehrle hot water machines. Featuring a red adjustment knob with a numbered control disc, this valve allows operators to precisely regulate chemical flow for accurate dilution rates and optimal cleaning performance.

Equipped with two 6mm plastic hose barbs, the ST66 enables users to switch between two separate chemical sourceswith ease, making it highly versatile for multi-chemical cleaning setups.

Key Features

✅ Precise chemical dosing – red top with numbered disc for easy adjustment
✅ Dual chemical pickup – two 6mm hose barbs for switching between different chemicals
✅ Durable construction – built for professional hot water pressure washers
✅ Ideal for Ehrle models – widely used as standard chemical metering valve
✅ Improves cleaning efficiency – ensures correct dilution rates for detergents and cleaning agents

Why Choose This Product?

The ST66 Chemical Metering Valve offers precise and reliable chemical control, making it an essential part for Ehrle hot water pressure washers and other compatible systems. Its dual chemical pickup design saves time and improves workflow, while the numbered disc allows for repeatable and accurate settings, ensuring consistent cleaning results.