---
product_id: 402142544
title: "McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch"
brand: "mcdonnell & miller"
price: "$912.86"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/402142544-mcdonnell-and-miller-fs4-3-general-purpose-liquid-flow-switch
store_origin: EC
region: Ecuador
---

# Electronic Switch Precision Control General Purpose McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch

**Brand:** mcdonnell & miller
**Price:** $912.86
**Availability:** ✅ In Stock

## Summary

> 💧 Flow with Confidence: Elevate Your System's Efficiency!

## Quick Answers

- **What is this?** McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch by mcdonnell & miller
- **How much does it cost?** $912.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/402142544-mcdonnell-and-miller-fs4-3-general-purpose-liquid-flow-switch)

## Best For

- mcdonnell & miller enthusiasts

## Why This Product

- Trusted mcdonnell & miller brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Construction:** Built to withstand demanding environments and extend lifespan.
- • **Real-Time Monitoring:** Stay ahead with instant feedback on liquid flow status.
- • **Reliable Performance:** Ensure consistent flow monitoring for optimal system efficiency.
- • **User-Friendly Design:** Easy installation and maintenance for hassle-free operation.
- • **Versatile Application:** Perfect for a variety of liquid types and industrial settings.

## Overview

The McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch is an electronic switch designed for reliable flow monitoring across various liquid applications. Engineered for durability and ease of use, it ensures optimal performance in industrial settings.

## Description

GENERAL PURPOSE LIQUID FLOW SWITCH VOLTS: 115/230 FLA: 74/37 LRA: 444/222 FOR FLUID ABOVE 220F DEGREES MAX PSI: 160 MAX TEMPERATURE: 300F THREAD SIZE: 1"NPT DIMENSIONS: 3"H X 3-3/4"W X 5-3/4"D WEIGHT: 1LB 75oZ COUNTRY OF ORIGIN: UNKNOWN PACKAGED IN MANUFACTURER BOX

## Features

- Item Category: Electronic Switch
- Item Trademark: Mcdonnell & Miller
- manufacturer: MCDONNELL & MILLER

## Product Details

- **Operation mode:** Automatic
- **Contact type:** Normally Open
- **Connector type:** Screw
- **Brand:** Mcdonnell & Miller
- **Switch type:** Flow Switch

## Images

![McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch - Image 1](https://m.media-amazon.com/images/I/717zPGpnXFL.jpg)
![McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch - Image 2](https://m.media-amazon.com/images/I/41Tc6ZuHPwL.jpg)
![McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch - Image 3](https://m.media-amazon.com/images/I/717zPGpnXFL.jpg)
![McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch - Image 4](https://m.media-amazon.com/images/I/11lJqRJzuvS.jpg)

## Frequently Bought Together

- McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch
- PIC Gauges TRI-RC-254R1.75-D Commercial Tridicator, Black Steel Case, Bronze Internals, Plastic Lens w/ Red Indicator, 2.5" Dial, 1.75" Stem Length, 0/75 psi Range, 1/4" Male NPT

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**Shop now:** [https://www.desertcart.ec/products/402142544-mcdonnell-and-miller-fs4-3-general-purpose-liquid-flow-switch](https://www.desertcart.ec/products/402142544-mcdonnell-and-miller-fs4-3-general-purpose-liquid-flow-switch)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-23*