--- product_id: 31132819 title: "Systems Auto Shut Off Valve Replacement Part (ASO)" brand: "apec water" price: "SAR 78" currency: SAR in_stock: true reviews_count: 8 category: "Apec Water" url: https://www.desertcart.com.sa/products/31132819-systems-auto-shut-off-valve-replacement-part-aso store_origin: SA region: Saudi Arabia --- # Stops endless wastewater drainage 0.25 inch Quick Connect ports Lightweight & easy install Systems Auto Shut Off Valve Replacement Part (ASO) **Brand:** apec water **Price:** SAR 78 **Availability:** ✅ In Stock ## Summary > 💧 Upgrade your RO system with smart shut-off power! ## Quick Answers - **What is this?** Systems Auto Shut Off Valve Replacement Part (ASO) by apec water - **How much does it cost?** SAR 78 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/31132819-systems-auto-shut-off-valve-replacement-part-aso) ## 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 - • **Water Waste Warrior:** Automatically shuts off to prevent water waste and boost system pressure - • **Certified Reliability:** NSF certified for trusted, long-lasting performance - • **Compact & Lightweight:** Weighs just 1.76 oz, perfect for tight under-sink spaces - • **Seamless Compatibility:** Fits APEC RO models & Watts Premier systems effortlessly - • **Effortless Installation:** Quick connect design for a no-fuss setup in minutes ## Overview The APEC Auto Shut Off Valve Replacement Part (ASO) is a lightweight, easy-to-install valve compatible with multiple APEC and Watts Premier reverse osmosis systems. Featuring 1/4 inch quick connect ports and NSF certification, it automatically stops water flow to prevent waste and improve system pressure, ensuring efficient and reliable water filtration. ## Description Product description Easy Installation Featured with 1/4" quick-connect fittings, this auto shut off valve can be easily connected and disconnected to your system. You can simply plug or unplug the tubing. Durable Design This light weight but durable shut off valve is made of certified material for long-lasting performance and leak-free experience. Industry Standard Size It can be used on all APEC RO systems or most other reverse osmosis systems with 1/4" tubing. Review: Compatible with other ro systems - Fixed my geekpure system from constantly draining. Much quieter too. Review: Easy part to change, saving water now. - RO system, Thank you thank you thank you!!!!! This stopped a small trickle of water through my water meter which was the answer to the puzzle I have been seeking for a year and 1/2. I thought it was a couple of other leaks I had found and fixed, but still the meter registered as moving. I never dreamed it was the water system. This part was original and 24 yr.s old. In turning off the water under the sink to change the last filter, I noticed the meter stopped. So I was thrilled to finally solve the on going problem and mystery, It costs a lot of money to hire a leak detecting company, so I figured I would eventually figure it out, and bingo this was it. So happy desertcart had the right part. It has been a process of elemination to accidentally run across this last piece of the puzzle since I did not know what this part did on the unit, but water was not going through the system after changing all the filters one by one, it came down to the shut off valve, the part I dreaded most on changing since it looked ominice and scary, but now I know all about the dreaded chore of changing everything on the unit and what they all do. I always wanted to ignore and out of sight out of mind when it came to this hard to get to and hard to undo to redo everything on this complex system. It takes alot of muscle as well as patience. I can now breath a sigh of relief, and feel a sense of accomplishment. This part which was the scariest ended up being the easiest of all the parts to change and now my 24 yr. old unit is like new again. I hope this helps someone else with the same problem, you live and learn. I will now be changing the filters more often since this experiance. Thanks again for having the parts I needed. ## 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 | #20,153 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Undersink Water Filtration Replacement Parts | | Brand | APEC WATER | | Brand Name | APEC WATER | | Customer Reviews | 4.5 out of 5 stars 887 Reviews | | 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 | 1.76 ounces | | Item dimensions L x W x H | 6.1 x 3.15 x 1.81 inches | | Manufacturer | APEC Water Systems | | Manufacturer Part Number | ASO | | Material | Plastic | | 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 ![Systems Auto Shut Off Valve Replacement Part (ASO) - 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Compatible with other ro systems *by J***N on March 20, 2026* Fixed my geekpure system from constantly draining. Much quieter too. ### ⭐⭐⭐⭐⭐ Easy part to change, saving water now. *by A***R on May 31, 2024* RO system, Thank you thank you thank you!!!!! This stopped a small trickle of water through my water meter which was the answer to the puzzle I have been seeking for a year and 1/2. I thought it was a couple of other leaks I had found and fixed, but still the meter registered as moving. I never dreamed it was the water system. This part was original and 24 yr.s old. In turning off the water under the sink to change the last filter, I noticed the meter stopped. So I was thrilled to finally solve the on going problem and mystery, It costs a lot of money to hire a leak detecting company, so I figured I would eventually figure it out, and bingo this was it. So happy Amazon had the right part. It has been a process of elemination to accidentally run across this last piece of the puzzle since I did not know what this part did on the unit, but water was not going through the system after changing all the filters one by one, it came down to the shut off valve, the part I dreaded most on changing since it looked ominice and scary, but now I know all about the dreaded chore of changing everything on the unit and what they all do. I always wanted to ignore and out of sight out of mind when it came to this hard to get to and hard to undo to redo everything on this complex system. It takes alot of muscle as well as patience. I can now breath a sigh of relief, and feel a sense of accomplishment. This part which was the scariest ended up being the easiest of all the parts to change and now my 24 yr. old unit is like new again. I hope this helps someone else with the same problem, you live and learn. I will now be changing the filters more often since this experiance. Thanks again for having the parts I needed. ### ⭐⭐⭐⭐⭐ WILL WORK IN WATTS PREMIER SYSTEMS, NOT JUST APEC *by R***R on October 8, 2025* I used this to replace the ASO on our Watts Ro-pure system. It works as a direct replacement. I do notice that the system pressure is better now and the endless wastewater drainage has stopped. Hooray. ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/31132819-systems-auto-shut-off-valve-replacement-part-aso](https://www.desertcart.com.sa/products/31132819-systems-auto-shut-off-valve-replacement-part-aso) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-06-12*