---
product_id: 272820549
title: "iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, 1 Count (Pack of 1), White"
brand: "ispring"
price: "896221₫"
currency: VND
in_stock: true
reviews_count: 5
category: "I Spring"
url: https://www.desertcart.vn/products/272820549-ispring-aas2-reverse-osmosis-water-filter-automatic-shut-off-valve
store_origin: VN
region: Vietnam
---

# 65% pressure-triggered shutoff Universal RO system compatibility 1/4" quick-connect fittings iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, 1 Count (Pack of 1), White

**Brand:** ispring
**Price:** 896221₫
**Availability:** ✅ In Stock

## Summary

> 💧 Stop leaks before they start—upgrade your RO system with smart shutoff tech!

## Quick Answers

- **What is this?** iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, 1 Count (Pack of 1), White by ispring
- **How much does it cost?** 896221₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/272820549-ispring-aas2-reverse-osmosis-water-filter-automatic-shut-off-valve)

## 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

- • **Durable & Compact:** Lightweight, space-saving design fits discreetly under your sink.
- • **Leak-Free Assurance:** Designed with clear 'in & out' markings and secure fittings to eliminate drips.
- • **Smart Pressure Control:** Automatically stops water flow at 65% tank pressure to prevent waste and leaks.
- • **Effortless Installation:** Quick-connect 1/4" fittings make setup seamless—no plumber needed.
- • **Universal Compatibility:** Works flawlessly with most reverse osmosis systems on the market.

## Overview

The iSpring AAS2 Automatic Shut-Off Valve is a compact, easy-to-install component designed for reverse osmosis water filtration systems. It automatically halts water flow when tank pressure reaches about 65% of supply pressure, preventing continuous draining and water waste. Featuring universal compatibility and quick-connect 1/4" fittings, it ensures a leak-free, efficient upgrade for your under-sink RO setup.

## Description

Reverse Osmosis Water Filter Automatic Shut-Off Valve with Quick-Connect fittings, 1/4" - Allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure; - 1/4" fitting; - Easy to install, as the picture shown. The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing inlet. The membrane housing low pressure outlet connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank. Remark: Continual drain problem can be caused by different factors, including automatic shut-off valve, check valve, flow restrictor, or tank pressure. Replacing the ASV may not help if the problem is caused by other factors.

Review: This stopped my never-ending drain issue with my iSpring RO System I got back in 2013. When you refill your tank with pressure, this can make the drain problem show up a little easier. You can check if it's the ASO valve vs the check valve by turning off the tank valve, but leave the inlet valve open (that comes from your house water supply). If it continues to drain then the ASO valve could be bad.. If you do the opposite (turn on tank valve, off inlet water supply) and it stops draining then it's most likely the ASO valve. Some tips for installation: Make sure you buy extra RO tubing with this so you can put new tubing on at the same time, especially if your old ASO valve has screw on fittings like mine did. Push the tubes in pretty forcefully into the quick connect fittings, if you don't push past the rubber ring inside, it will leak at that fitting. You can take the little plastic lip piece out to see where the rubber ring is to get an idea of what you will need to push past. There are some good youtube videos on how to install these correctly if you are still stuck. Before you put the RO system back, leave it out for 10-15 minutes with everything turned on to make sure nothing leaks. If any of the quick connects are leaking, see the note above about pushing it past the rubber ring. You can use petroleum jelly if it's being really stubborn.
Review: Worked as promised. Thanks

## Features

- iSpring Automatic Shut-off Valve (ASV) - Quick Fitting
- Compatible with most Reverse Osmosis systems (including brand names) in the market
- Allows your system to turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure
- 1/4" fittings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00866NE7G |
| ASIN  | B00866NE7G |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (276) |
| Customer reviews | 4.6 4.6 out of 5 stars (276) |
| Date First Available | 1 January 2024 |
| Date First Available  | 1 January 2024 |
| Included components | part |
| Installation Method | Under Sink |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 50 g |
| Item model number | AAS2 |
| Item model number  | AAS2 |
| Manufacturer | iSpring |
| Manufacturer  | iSpring |
| Material | Plastic |
| Number Of Pieces | 1 |
| Part number | AAS2 |
| Product Dimensions | 6.35 x 5.08 x 3.81 cm; 50 g |
| Product Dimensions  | 6.35 x 5.08 x 3.81 cm; 50 g |
| Size | 1 Count (Pack of 1) |
| Special Features | Reverse Osmosis |

## Product Details

- **Brand:** iSpring
- **Included components:** part
- **Installation type:** Under Sink
- **Material:** Plastic
- **Special features:** Reverse Osmosis

## Images

![iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, 1 Count (Pack of 1), White - Image 1](https://m.media-amazon.com/images/I/51kWApMXf2L.jpg)

## Questions & Answers

**Q: Will this work with ispring rcc7ak 6-stage?**
A: Hi,

Thank you for the question. Yes, this is the correct component of this system. For immediate assistance, please call us at 678-261-7611 or visit our website and click the "Support" link on top to create a support ticket. We will respond within 24 business hours.

Thanks,

iSpring Water Systems LLC

**Q: I replaced this valve and now have air trapped. loud water hammer. bleeding the normal way doesn't help. how do i bleed the other lines?**
A: Welcome to the hammer noise Jay:  First of all the noise is not caused by the valve you replaced but from the one on the storage tank.  
a.  shut off the valve on the storage tank and turn on the water faucet to see if it stops.
     if so it's the valve on the storage tank.
b.  How old is the storage tank.  If 3 or more years replace the tank because the 
     bladder goes bad and loses pressure.  If you remove the valve stem and black 
     juice comes out the bladder has failed. If not I found the tank dry air pressure has 
     to be between 5 to 7 lbs. when empty of water.  Mine is at 6 psi.  Need a low 
     pressure tire gauge.  You might also have to replace the shut off valve on your 
     tank.
     lots of steps but mine stopped hammering when work was done.
     Hope this helps and good luck.

**Q: How do you test valve?**
A: To be honest I’ve had a lot of problems with this whole design. They don’t last long for me and it’s not this manufacturer I’m referring to. I’ve bought others and I have the same  problem over and over. I just chuck them and buy a new one. 3 months later I do it again. Mine is set up on a reef tank for replenishment.

**Q: I installed the 4-way valve, but water keeps draining unless I disconnect the booster pump, what should I do?**
A: Hi there, The systems with a booster pump can't use this type of auto shut off valve. Please reach out to our customer service team so we can help troubleshoot and send the correct parts needed to fix the system.

iSpring Water Systems, LLC

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 8 February 2020*

This stopped my never-ending drain issue with my iSpring RO System I got back in 2013. When you refill your tank with pressure, this can make the drain problem show up a little easier. You can check if it's the ASO valve vs the check valve by turning off the tank valve, but leave the inlet valve open (that comes from your house water supply). If it continues to drain then the ASO valve could be bad.. If you do the opposite (turn on tank valve, off inlet water supply) and it stops draining then it's most likely the ASO valve. Some tips for installation: Make sure you buy extra RO tubing with this so you can put new tubing on at the same time, especially if your old ASO valve has screw on fittings like mine did. Push the tubes in pretty forcefully into the quick connect fittings, if you don't push past the rubber ring inside, it will leak at that fitting. You can take the little plastic lip piece out to see where the rubber ring is to get an idea of what you will need to push past. There are some good youtube videos on how to install these correctly if you are still stuck. Before you put the RO system back, leave it out for 10-15 minutes with everything turned on to make sure nothing leaks. If any of the quick connects are leaking, see the note above about pushing it past the rubber ring. You can use petroleum jelly if it's being really stubborn.

### ⭐⭐⭐⭐⭐ Review
*by R***T on 4 November 2025*

Worked as promised. Thanks

### ⭐⭐⭐⭐⭐ Review
*by A***R on 4 October 2022*

Good

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-07*