Paddle Liquid Flow Switch

Overview

The ZNC-PFS Paddle Liquid Flow Switch is designed to monitor liquid flow in pipelines and provide an SPDT switching signal for equipment control, alarm, or protection.

It features an adjustable flow setpoint, stainless steel paddle, IP65 enclosure, and brass or stainless steel wetted body options. It is suitable for water, seawater, brine, ethylene glycol, and other compatible liquids.

Features

• Adjustable flow setpoint

• SPDT microswitch output

• Stainless steel paddle

• Brass or stainless steel body

• Maximum pressure: 1.5 MPa

• Liquid temperature: -30°C to 120°C

• Protection rating: IP65

• 1/2", 3/4", and 1" NPT connections

• Suitable for horizontal or vertical pipelines

Applications

The ZNC-PFS liquid flow switch is commonly used in:

• HVAC water systems

• Boilers and chillers

• Pumps and cooling systems

• Water-treatment equipment

• Heat exchangers

• Pool and seawater systems

• Brine and glycol circulation systems

OEM and Customization

ZINACA provides OEM and private-label services, including:

• Customized logo and nameplate

• Customized model number

• Neutral packaging

• Customized product labels

• Brass or stainless steel body options

• Different NPT connection sizes

• Customized datasheets and instructions

Selection Notes

Please confirm the liquid medium, pipe size, normal flow rate, operating pressure, and temperature before ordering.

The paddle should be selected according to the pipe diameter. Install the switch in the direction indicated by the flow arrow and keep it away from elbows, valves, filters, and other areas with unstable flow.

For seawater, brine, or corrosive liquids, the stainless steel version is recommended.

This product provides an on/off switching signal and is not intended for continuous flow measurement.