---
product_id: 441807347
title: "APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch"
brand: "apec water"
price: "165.69 DT"
currency: TND
in_stock: true
category: "Apec Water"
url: https://www.desertcart.tn/products/441807347-apec-water-aso-auto-shut-off-valve-replacement-part-0
store_origin: TN
region: Tunisia
---

# Auto shut-off at 65% tank pressure Lightweight & easy install 0.25 inch quick connect precision APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch

**Brand:** apec water
**Price:** 165.69 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Stop wasting water, start saving smart with APEC’s Auto Shut-Off Valve!

## Quick Answers

- **What is this?** APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch by apec water
- **How much does it cost?** 165.69 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/441807347-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

- • **Durable & Reliable:** Built to withstand up to 85 PSI, ensuring long-lasting performance and peace of mind
- • **Effortless Installation:** Lightweight design and quick connect ports make setup a breeze—no plumber needed
- • **Precision Quick Connect:** Seamlessly fits 1/4 inch RO systems for hassle-free upgrades
- • **Universal Compatibility:** Works flawlessly with top APEC RO models like RO-45, RO-90, and more
- • **Smart Water Conservation:** Automatically stops water flow to prevent waste and protect your system

## Overview

The APEC Water ASO Auto Shut Off Valve is a 0.25 inch quick connect valve designed for APEC reverse osmosis systems. It automatically halts water flow when tank pressure hits 65% of supply pressure, preventing water waste and system wear. Lightweight and easy to install, it supports pressures up to 85 PSI and is compatible with multiple APEC RO models, making it an essential upgrade for efficient, eco-conscious water filtration.

## Description

This 1/4 in. Quick Connect ASO valve allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure. Without the auto shut-off valve, water will rush through the system wearing down components and sending purified water down the drain after the tank is filled. It is compatible with APEC under-sink reverse osmosis systems.

## 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 |
| Brand Name | APEC WATER |
| Connector Type | Compression |
| Country of Publication | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (884) |
| Exterior Finish | Plastic |
| Included Components | ASO |
| Inlet Connection Size | 0.25 Inches |
| Inlet Connection Type | Compression |
| Item Dimensions | 15.5 x 8 x 4.6 Centimeters |
| Item Highlight | Automatic Shut Off for APEC RO Systems, 1 Unit, Quick Connect, Lightweight, Easy Installation |
| 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 Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.25 Inches |
| Outlet Connection Type | Quick Connect |
| Size | 0.25 Inch |
| Specification Met | NEMA |
| Thread Size | 1/4 inch |
| Thread Type | NPT |
| UPC | 851001007402 |
| Unit Count | 1.0 Count |
| Valve Type | shut off valve |

## Product Details

- **Brand:** APEC WATER
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 0.25 Inches
- **Inlet Connection Type:** Compression
- **Item dimensions L x W x H:** 15.5 x 8 x 4.6 Centimeters
- **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 - Image 1](https://m.media-amazon.com/images/I/61hY-nV3IhL.jpg)
![APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch - Image 2](https://m.media-amazon.com/images/I/315CILiX0iL.jpg)
![APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch - Image 3](https://m.media-amazon.com/images/I/41JGI127b0L.jpg)
![APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch - Image 4](https://m.media-amazon.com/images/I/419Y7i4TlgL.jpg)
![APEC Water ASO Auto Shut Off Valve Replacement Part, 0.25 Inch - Image 5](https://m.media-amazon.com/images/I/41eZ+R9uUtL.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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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-23*