---
product_id: 31132819
title: "APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch | Automatic Shut Off for APEC RO Systems, 1 Unit, Quick Connect, Lightweight, Easy Installation"
brand: "apec water"
price: "€ 31.46"
currency: EUR
in_stock: true
category: "Apec Water"
url: https://www.desertcart.sk/products/31132819-apec-water-aso-auto-shut-off-valve-replacement-part-0
store_origin: SK
region: Slovakia
---

# Stops Water Waste Automatically 1/4" Quick Connect Fittings Lightweight & Easy Installation APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch | Automatic Shut Off for APEC RO Systems, 1 Unit, Quick Connect, Lightweight, Easy Installation

**Brand:** apec water
**Price:** € 31.46
**Availability:** ✅ In Stock

## Summary

> 💧 Stop leaks, save water, and upgrade your RO system effortlessly!

## Quick Answers

- **What is this?** APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch | Automatic Shut Off for APEC RO Systems, 1 Unit, Quick Connect, Lightweight, Easy Installation by apec water
- **How much does it cost?** € 31.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/31132819-apec-water-aso-auto-shut-off-valve-replacement-part-0)

## Best For

- apec water enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Free Durability:** Crafted from certified materials to ensure long-lasting, drip-proof performance.
- • **Compact & Lightweight:** At just 1.76 ounces, it’s easy to handle and install even in tight spaces.
- • **Plug & Play Efficiency:** 1/4" quick-connect fittings make installation a breeze—no plumber needed.
- • **Universal Compatibility:** Fits all APEC RO models and most reverse osmosis systems with 1/4" tubing.
- • **Water-Saving Smart Valve:** Automatically shuts off to prevent constant draining and reduce your water bill.

## Overview

The APEC Water Systems Auto Shut Off Valve Replacement Part (ASO) is a lightweight, durable valve designed for easy installation with 1/4" quick-connect fittings. Compatible with all APEC RO models and most reverse osmosis systems, it automatically stops water flow to prevent waste and leaks, ensuring efficient, long-lasting performance.

## Description

desertcart.com: APEC Water Systems Auto Shut Off Valve Replacement Part (ASO) : Tools & Home Improvement

## Features

- Automatic Shut Off Valve for APEC Reverse Osmosis Systems Model RO-45, RO-90,RO-PH90,ROES-50,ROES-PH75,ROES-UV75.
- 1/4 inch Quick Connect
- Light Weight,Easy Install and unload
- Compatible with most Reverse Osmosis systems

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01IE3591Y |
| Best Sellers Rank | #25,451 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Undersink Water Filtration Replacement Parts |
| Brand Name | APEC WATER |
| Customer Reviews | 4.5 4.5 out of 5 stars (892) |
| Exterior Finish | Plastic |
| Included Components | ASO |
| Inlet Connection Size | 0.25 Inches |
| Inlet Connection Type | Quick Connect |
| Item Dimensions | 6.1 x 3.15 x 1.81 inches |
| Item Type Name | Auto Shut-Off Valve |
| Item Weight | 0.11 Pounds |
| Manufacturer | APEC Water Systems |
| Manufacturer Part Number | ASO |
| Material Type | Plastic |
| Maximum Pressure | 85 Pound per Square Inch |
| Model Number | ASO |
| Number of Ports | 2 |
| Outlet Connection Size | 0.25 Inches |
| Outlet Connection Type | Quick Connect |
| Size | 0.25 Inch |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | NSF |
| UPC | 851001007402 |
| Unit Count | 1.0 Count |
| Valve Type | Automatic Shut Off Valve |

## Product Details

- **Brand:** APEC WATER
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 0.25 Inches
- **Inlet Connection Type:** Quick Connect
- **Item dimensions L x W x H:** 6.1 x 3.15 x 1.81 inches
- **Material:** Plastic
- **Maximum Operating Pressure:** 85 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.25 Inches
- **Outlet Connection Type:** Quick Connect

## Images

![APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch | Automatic Shut Off for APEC RO Systems, 1 Unit, Quick Connect, Lightweight, Easy Installation - Image 1](https://m.media-amazon.com/images/I/61hY-nV3IhL.jpg)

## Questions & Answers

**Q: Apec: is a 90% pressure aso valve available (to use with permeate pump)?  my pressure is below the minimum for my ice maker with this 65% valve.**
A: call APEC they are fantastic at helping with any problem.

**Q: My Nu aqua stage 6 motor keeps running**
A: Booster pump and/or the RO system producing water should never run all the time so I would replace the ASO valve.

**Q: Would this work with watts premier system?**
A: Yes. I am using this on a Watts Premier system

**Q: at what prssure will this shut off?**
A: It is designed to shut off at around 50-60% of your inlet water pressure.  If you need further assistance, feel free to contact us directly by calling 1-800-880-4808 or e-mailing us at info@apecwater.com. We are in the office from Monday-Friday from 8:00am-5:30pm PST. Best Regards, APEC Customer Service

## Frequently Bought Together

- APEC Water Systems Auto Shut Off Valve Replacement Part (ASO)
- APEC Water Systems 1/4" Quick Connect Check Valve Replacement Part (Check-VAL)
- APEC ESSENCE Series 50 GPD Complete Replacement Filter For Undersink System(FILTER-MAX-ES50)

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**Shop now:** [https://www.desertcart.sk/products/31132819-apec-water-aso-auto-shut-off-valve-replacement-part-0](https://www.desertcart.sk/products/31132819-apec-water-aso-auto-shut-off-valve-replacement-part-0)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-07-27*