Chemical Controllers & Automation

The Aquasol M011 Safety Pressure Switch protects chemical injection systems by enabling feed only when water pressure is present (typically after filtration). Rated for 1–6 psi, this normally-open switch triggers a 120 VAC pigtail output when pressure arrives. It is commonly used with Aquasol chemical controllers to prevent improper dosing during dry runs or backwash conditions.

Install upstream of the chemical feeder using the supplied tubing and thread adapter. Switch calibration is adjustable via internal knob. Must be properly tested after installation to confirm correct activation and deactivation. This OEM safety switch carries Aquasol’s standard one-year parts warranty.

Key Features

• Activates at 1–6 psi; normally open until flow is detected

• Controls a 120 VAC feed line (12 A max)

• ¼″ NPT pressure port and included tubing adapter

• Factory adjustable actuation pressure with calibration knob

• Auto-disable on backwash, pump off, or loss of flow

• Ideal for Aquasol chemical injection applications

• One-year Aquasol OEM replacement warranty