---
product_id: 394481802
title: "iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White"
brand: "ispring"
price: "¥22146"
currency: JPY
in_stock: true
reviews_count: 5
category: "I Spring"
url: https://www.desertcart.jp/products/394481802-ispring-als1-leak-detector-and-shut-off-valve-for-reverse
store_origin: JP
region: Japan
---

# Auto shut-off on leak detection 1/4” quick connect tubing fit Lifetime tech support & warranty iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White

**Brand:** ispring
**Price:** ¥22146
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay worry-free — leak protection that works before you even notice!

## Quick Answers

- **What is this?** iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White by ispring
- **How much does it cost?** ¥22146 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/394481802-ispring-als1-leak-detector-and-shut-off-valve-for-reverse)

## Best For

- ispring enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Discreet:** Small footprint (4.57 x 3.81 x 7.37 cm) fits neatly under your sink without clutter.
- • **Trusted Protection:** Backed by lifetime free tech support and a manufacturer warranty for peace of mind.
- • **Instant Leak Defense:** Automatically cuts off water flow the moment a leak is detected, preventing costly damage.
- • **Effortless Maintenance:** Quick-release screw and twist design for easy pad replacement after water exposure.
- • **Seamless Compatibility:** Designed to fit standard 1/4” tubing for hassle-free integration with your RO or under-sink system.

## Overview

The iSpring ALS1 Leak Detector and Shut-Off Valve is a compact, reliable safeguard for reverse osmosis and under-sink water filtration systems. It uses an absorbent pad that expands upon contact with water to automatically shut off the incoming supply, preventing water damage. Featuring a 1/4” quick connect for easy installation, it comes with two replacement pads and is supported by lifetime free tech support and a manufacturer warranty, making it an essential upgrade for any water filtration setup.

## Description

This Leak Stop shuts off flow to a drinking water system in the event a leak should occur. This unique device is a small up-front investment, designed to eliminate possible damage to homes and business property. When a leak occurs, the adsorbent applicator "tablet" expands to close the valve and shut off the incoming water supply. Two tablets are included with each Leak Protector. Maximum operating pressure = 100 psi

Review: I'm sure this will work just fine, it's just not what is being advertised. This almost seems like a Bait and Switch... which is illegal.
Review: Excellent idea, you never know when your Reverse osmosis will spring a leak, Nothing is perfect if I get a leak from my RO unit this will probably save me from water damage. I had a RO unit many years ago that leaked and caused cabinet damage, this would have been great to have. The only negative I have is it does not come with replacement adsorbent tablets. If leak detector stops a leak it needs to be reset and new tablet installed.

## Features

- Rest assured when using reverse osmosis or under sink water filtration systems: The shut-off valve protects your home and business properties from costly water damage by automatically shut off the incoming water supply once the pad detects a potential water leakage
- Easy to replace: Just take out the screw and twist the unit to open. The pad needs to be replaced every time it touches the water and expands
- 1/4” quick connect: Fits ¼” tubings
- Peace of mind customer service: Register online to activate your manufacturer warranty and life-time free tech support. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help!
- Work with iSpring ALS1P3 replacement pads

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NVQYR1I |
| ASIN  | B00NVQYR1I |
| Battery Description | Alkaline |
| Brand | iSpring |
| Built-In Media | parts |
| Color | White |
| Compatible Devices | iSpring reverse osmosis and under sink water filtration systems |
| Control Method | Touch |
| Customer Reviews | 3.6 3.6 out of 5 stars (39) |
| Customer reviews | 3.6 3.6 out of 5 stars (39) |
| Date First Available  | 7 November 2014 |
| Global Trade Identification Number | 00662425070206 |
| Is Discontinued By Manufacturer  | No |
| Item Type Name | with 1/4” Quick Connect |
| Item model number  | ALS1 |
| Manufacturer | iSpring |
| Manufacturer  | iSpring |
| Mounting Type | Wall Mount |
| Power Source | Corded Electric |
| Product Dimensions  | 4.57 x 3.81 x 7.37 cm; 41 g |
| Sensor Technology | Contact Sensor |
| UPC | 662425070206 |

## Product Details

- **Battery description:** Alkaline
- **Brand:** iSpring
- **Colour:** White
- **Compatible devices:** iSpring reverse osmosis and under sink water filtration systems
- **Power source:** Corded Electric

## Images

![iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - Image 1](https://m.media-amazon.com/images/I/51xjjxubcuL.jpg)
![iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - Image 2](https://m.media-amazon.com/images/I/51D5PvtR39L.jpg)
![iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - Image 3](https://m.media-amazon.com/images/I/51B5LvlnnzL.jpg)
![iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - Image 4](https://m.media-amazon.com/images/I/61483RFJxHL.jpg)
![iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - Image 5](https://m.media-amazon.com/images/I/81PGKY30RtL.jpg)

## Questions & Answers

**Q: How do you get replacement pads?**
A: They do not still replacement pads. If you call or email support they will send you a complete unit, including new pads.

## Customer Reviews

### ⭐ Review
*by P***N on 3 February 2023*

I'm sure this will work just fine, it's just not what is being advertised. This almost seems like a Bait and Switch... which is illegal.

### ⭐⭐⭐⭐⭐ Review
*by H***R on 2 August 2017*

Excellent idea, you never know when your Reverse osmosis will spring a leak, Nothing is perfect if I get a leak from my RO unit this will probably save me from water damage. I had a RO unit many years ago that leaked and caused cabinet damage, this would have been great to have. The only negative I have is it does not come with replacement adsorbent tablets. If leak detector stops a leak it needs to be reset and new tablet installed.

### ⭐ Review
*by B***. on 18 July 2022*

The valve sent is not at all as pictured. Seems to be a less expensive model.

## Frequently Bought Together

- iSpring all accessories (Leak Detector)
- iSpring MC1 1.8-Inch x 12-Inch 100GPD Reverse Osmosis Membrane
- iSpring ICEK 6M Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4"

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-09*