---
product_id: 3671865
title: "iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, Whilte"
brand: "ispring"
price: "£17.35"
currency: GBP
in_stock: true
category: "I Spring"
url: https://www.desertcart.co.uk/products/3671865-ispring-aas2-reverse-osmosis-water-filter-automatic-shut-off-valve
store_origin: GB
region: United Kingdom
---

# Compatible with most RO systems 1/4" quick-connect fittings 65% pressure-triggered auto shut-off iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, Whilte

**Brand:** ispring
**Price:** £17.35
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of leaks with smart shut-off tech!

## Quick Answers

- **What is this?** iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, Whilte by ispring
- **How much does it cost?** £17.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/3671865-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

- • **Compact & Lightweight:** At just 50 grams and 2"x2.5" size, it fits discreetly under your sink without clutter.
- • **Smart Pressure Control:** Automatically stops water flow at 65% tank pressure to prevent overflow and save water.
- • **Universal Compatibility:** Seamlessly fits with most reverse osmosis systems on the market, ensuring hassle-free upgrades.
- • **Reliable Water Efficiency:** Reduces unnecessary water waste by shutting off supply precisely when needed, supporting eco-conscious living.
- • **Quick-Connect Installation:** 1/4" fittings with clear 'in & out' markings make setup effortless and tool-free.

## Overview

The iSpring AAS2 Automatic Shut-Off Valve is a compact, easy-to-install component designed for reverse osmosis water filtration systems. It automatically stops water flow when tank pressure reaches about 65% of supply pressure, preventing overflow and conserving water. Featuring universal 1/4" quick-connect fittings, it fits most RO systems and ensures efficient, reliable operation with minimal maintenance.

## Description

Product 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. From the Manufacturer 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.

## 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 |
| Best Sellers Rank | #98,937 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #73 in Undersink Water Filtration Replacement Parts |
| Brand | iSpring |
| Brand Name | iSpring |
| Customer Reviews | 4.5 out of 5 stars 297 Reviews |
| Global Trade Identification Number | 00662425048229 |
| Included Components | part |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 2.01"L x 2.52"W x 1.5"H |
| Item Type Name | Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect |
| Item Weight | 50 Grams |
| Manufacturer | iSpring |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | AAS2 |
| Model Number | AAS2 |
| Other Special Features of the Product | Multi Stage Filtration, Reduce TDS, Tankless |
| Part Number | AAS2 |
| Power Source | Manual Operation |
| Product Dimensions | 2.01"L x 2.52"W x 1.5"H |
| Purification Method | Reverse Osmosis |
| Special Feature | Multi Stage Filtration, Reduce TDS , Tankless |
| Supported Water TDS Level Maximum (PPM) | 300 |
| UPC | 662425048229 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** iSpring
- **Included Components:** part
- **Installation Type:** Under Sink
- **Item Weight:** 50 Grams
- **Material:** Plastic
- **Model Name:** AAS2
- **Power Source:** Manual Operation
- **Product Dimensions:** 2.01"L x 2.52"W x 1.5"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Multi Stage Filtration, Reduce TDS, Tankless

## Images

![iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, Whilte - Image 1](https://m.media-amazon.com/images/I/51kWApMXf2L.jpg)
![iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, Whilte - Image 2](https://m.media-amazon.com/images/I/61wc8kXTmhL.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

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-12*