--- product_id: 38497956 title: "1/4\" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2)" brand: "digiten" price: "€ 22.30" currency: EUR in_stock: true reviews_count: 13 category: "Digiten" url: https://www.desertcart.hr/products/38497956-1-4-automatic-shut-off-valve-with-quick-connect-fittings store_origin: HR region: Croatia --- # Auto shut-off at 65% tank pressure 4-way valve design for versatile flow control 1/4" Quick-Connect Fittings 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2) **Brand:** digiten **Price:** € 22.30 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of leaks and waste with smart shut-off tech! ## Quick Answers - **What is this?** 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2) by digiten - **How much does it cost?** € 22.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/38497956-1-4-automatic-shut-off-valve-with-quick-connect-fittings) ## Best For - digiten enthusiasts ## Why This Product - Trusted digiten brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Pack Value:** Two valves included for seamless system upgrades or replacements. - • **Effortless Installation:** Top 'in & out' markings simplify setup for any RO system. - • **Precision Auto Shut-Off:** Automatically stops water flow at optimal pressure to prevent waste. - • **Universal Compatibility:** Fits most reverse osmosis systems with standard 1/4" quick-connect fittings. - • **Quiet & Reliable Operation:** Eliminates annoying valve noises, ensuring peaceful water filtration. ## Overview The DIGITEN 1/4" Automatic Shut-Off Valve features quick-connect fittings for easy installation and is designed to automatically stop water flow when tank pressure hits 65% of supply pressure. Compatible with most reverse osmosis systems, this 4-way valve pack of two ensures efficient, quiet, and reliable water filtration management. ## Description Easy to install.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. Review: Works fine - Basic ASO valve, works as expected. Can't speak to the actual pressures that trigger the valve as I didn't measure them, but it seems to be standard. If you have an RO system with a mechanical float in the tank that plugs the output tube and develops backpressure that way (like on an office water cooler), the minimum pressure differential may not ever be reached to trigger the valve and shut off the flow, and it might cause it to flutter or make a loud and annoying buzzing sound. Your RO membrane will continuously pump out wastewater, obviously a major problem. A fix for this is to run the wastewater output through the high pressure side of the ASO valve (side that says In and Out, not the side with the screws) instead of the feed water going into the RO membrane like the typical configuration requires. Wastewater comes out at a lower pressure than incoming city/well water, so the difference between wastewater and clean RO output water will be closer, and the valve will actually open and close quickly like it should. It's not a perfect fix, since running high-TDS wastewater through the ASO valve will make it gunk/mineralize up faster. But they're dirt cheap to swap out, and it definitely beats the hassle of retrofitting a solenoid and electric float switch into a setup that wasn't designed for it. Review: A good replacement valve for a noisy one. - I replaced a "whistling" shut off valve with this one. It is working great. ## Features - 1/4" Quick and easy connect fitting. - Suitable for most of the reverse osmosis water system. - Automatically turn off the water supply when the tank pressure reaches approximately 65% of the supply water pressure. - Package: 4 Way Shut-Off Valve × 2 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MDM0T0I | | Best Sellers Rank | #27,068 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Undersink Water Filtration Replacement Parts | | Brand | DIGITEN | | Brand Name | DIGITEN | | Connector Type | Quick Connect | | Customer Reviews | 4.5 out of 5 stars 853 Reviews | | Exterior Finish | Plastic | | Inlet Connection Size | 0.25 Inches | | Inlet Connection Type | Quick Connect | | Item Dimensions | 7 x 3.4 x 5.2 inches | | Item Weight | 0.04 Pounds | | Item dimensions L x W x H | 7 x 3.4 x 5.2 inches | | Manufacturer | DIGITEN | | Manufacturer Part Number | ROCON2-70 | | Material | Plastic | | Material Type | Plastic | | Maximum Pressure | 65 Pound per Square Inch | | Model Number | ROCON2-70 | | Number of Pieces | 2 | | Number of Ports | 4 | | Outlet Connection Size | 0.25 Inches | | Outlet Connection Type | Quick Connect | | Set Name | Pack of 2 | | Size | 125.48 cubic inches | | Thread Size | 1/4 inches | | Thread Type | Quick Connect | | Unit Count | 2.0 Count | | Valve Type | Solenoid Valve" or "Automatic Valve | ## Product Details - **Brand:** DIGITEN - **Exterior Finish:** Plastic - **Inlet Connection Size:** 0.25 Inches - **Inlet Connection Type:** Quick Connect - **Item dimensions L x W x H:** 7 x 3.4 x 5.2 inches - **Material:** Plastic - **Maximum Operating Pressure:** 65 Pound per Square Inch - **Number of Ports:** 4 - **Outlet Connection Size:** 0.25 Inches - **Outlet Connection Type:** Quick Connect ## Images ![1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2) - Image 1](https://m.media-amazon.com/images/I/61QQxNhEWDL.jpg) ## Questions & Answers **Q: Does this work with the watt premier ro system?** A: Yep, more specifically for an watts RO pure plus system. Just installed one of these and it worked without any issues **Q: How do i connect it to watts premier wp-5? The system gas it's own aso inside, air-gap faucet and tank line is 3/8, not 1/4?** A: If your supply/ return lines are 3/8ths od and the valve is 1/4 od this is probably not the valve you need, suggest you contact the manufacturer of your filter for a suitable replacement **Q: Is there any warranty on this?** A: This has worked very well for me since purchase some years ago. It replaced a defective unit on my RO system. At the price point - if it died now at 4 years - I'd have no complaints. But it marches on. So just drop the hammer on it, and move on. **Q: Have 5 stage ro, upgraded tank to 80 gallon. works fine. now added 2nd membrane and 2nd 120 gallon tank. reject water never stops. how to fix ?** A: It needs to be able to build pressure for it to shut off. Your tank may not be building any pressure check to make sure you don't have any leaks in the tank ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works fine *by A***L on December 8, 2025* Basic ASO valve, works as expected. Can't speak to the actual pressures that trigger the valve as I didn't measure them, but it seems to be standard. If you have an RO system with a mechanical float in the tank that plugs the output tube and develops backpressure that way (like on an office water cooler), the minimum pressure differential may not ever be reached to trigger the valve and shut off the flow, and it might cause it to flutter or make a loud and annoying buzzing sound. Your RO membrane will continuously pump out wastewater, obviously a major problem. A fix for this is to run the wastewater output through the high pressure side of the ASO valve (side that says In and Out, not the side with the screws) instead of the feed water going into the RO membrane like the typical configuration requires. Wastewater comes out at a lower pressure than incoming city/well water, so the difference between wastewater and clean RO output water will be closer, and the valve will actually open and close quickly like it should. It's not a perfect fix, since running high-TDS wastewater through the ASO valve will make it gunk/mineralize up faster. But they're dirt cheap to swap out, and it definitely beats the hassle of retrofitting a solenoid and electric float switch into a setup that wasn't designed for it. ### ⭐⭐⭐⭐⭐ A good replacement valve for a noisy one. *by B***P on April 20, 2026* I replaced a "whistling" shut off valve with this one. It is working great. ### ⭐⭐⭐⭐⭐ Worked, install hints *by T***X on November 17, 2023* First of these 2 replacement valves worked fine, stored the spare. Happy with our RO unit about 25 yrs now…install hints?: Cut off water pressures from house and RO tank, and before removing old valve, note the in/out valve end labels, also record the 4 line locations (pic, labels, or notes). Remove small plastic line locking c-clips. To remove lines, push in the locking collars and pull line out. (can also use open end 5/16” or 8mm wrench to help pushing in these quick release collars, saves fingernails). Reinstall lines on new valve, make sure they push all the way in (about ½”), then pull outward firmly to seat. Apply plastic line lock clips. If you have a seating leak afterward, remove the ¼” line, and cut off the line’s end. (seating portion only, it probably has surface scratches seeping). Two notes: #1. You can damage/foul these valves when plunging clogged sink drains. If you need to use a plunger, first remove the sink drain ¼” RO drain pipe hose, then wrap towel/rag around the ¼” drain hole opening to catch those small pressure squirts while plunging your sink drain. #2: Occasional gurgling drain sound when unit is removing the wastewater in normal operation? You can shove the ¼ “drain line into the drain pipe a tad further so it drains down the far inside of the sink pipe, and no gurgle. We prefer to leave line inserted slightly and let normal occasional RO wastewater fall/gurgle somewhat down into drain pipe's water trap. A consistent gurgling when close by the sink will let you know when the valve has finally failed and is wasting water all day. Excessive gurgling sounds because you are using more than your usual needs in filter water? Perhaps you just want to silence it for company coming into kitchen? Put your sink drain plug into the gurgling drain side, that muffles the sound. ## Frequently Bought Together - DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2) - APEC Water Systems 1/4" Quick Connect Check Valve Replacement Part (Check-VAL) - DIGITEN 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) --- ## 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.hr/products/38497956-1-4-automatic-shut-off-valve-with-quick-connect-fittings](https://www.desertcart.hr/products/38497956-1-4-automatic-shut-off-valve-with-quick-connect-fittings) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-21*