Does this work with the watt premier ro system?

Yep, more specifically for an watts RO pure plus system. Just installed one of these and it worked without any issues

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?

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

Is there any warranty on this?

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.

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 ?

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

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DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2)

DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2)

Product ID: 584735291

Details

Material
Plastic
Brand
DIGITEN
Item dimensions L x W x H
17.8 x 8.6 x
Inlet Connection Size
0.25 Inches
Inlet Connection Type
Quick-Connect
Outlet Connection Type
Barb

💧Automatic Shut-Off at 65% Tank Pressure

⏱️5-Minute Easy Installation

⚙️1/4" Quick-Connect Fittings

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€ 55.58

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Description

💧 Stay ahead with smart water control—because your RO deserves the best!

DUAL VALVE PACK - Two valves included for complete system upgrades or backups—never run dry.
SMART AUTO SHUT OFF - Protect your system by automatically stopping water flow at optimal tank pressure.
CLEAR FLOW DIRECTION - Top-marked 'in & out' ports ensure foolproof installation every time.
LIGHTWEIGHT DURABLE - Compact plastic design built to last without adding bulk or complexity.
EFFORTLESS QUICK CONNECT - Snap in place with 1/4" fittings designed for seamless RO system integration.

The DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings is a precision-engineered plumbing accessory designed for reverse osmosis water systems. Featuring easy 1/4" quick-connect fittings, it automatically halts water flow when tank pressure hits 65% of supply pressure, preventing overflow and system strain. This pack of two valves offers a straightforward, 5-minute installation with clearly marked ports for hassle-free setup, making it an essential upgrade for efficient, worry-free water purification.

Specifications

ASIN	B01MDM0T0I
Best Sellers Rank	#2,434,583 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #22,126 in Water Purifiers & Accessories
Brand	DIGITEN
Brand Name	DIGITEN
Country of Publication	USA
Customer Reviews	4.5 out of 5 stars 1,112 Reviews
Inlet Connection Size	0.25 Inches
Inlet Connection Type	Quick-Connect
Item Dimensions	17.8 x 8.6 x 13.2 Centimeters
Item Weight	0.04 Pounds
Item dimensions L x W x H	17.8 x 8.6 x 13.2 Centimeters
Manufacturer	DIGITEN
Material	Plastic
Material Type	Plastic
Model Number	ROCON2-70
Number of Ports	4
Outlet Connection Size	0.25 Inches
Outlet Connection Type	Barb
Specification Met	CE
Valve Type	shut-off valve

Reviews

H**L

24.02.2026

B**D

19.04.2026

M**W

27.01.2025

A**L

8.12.2025

F**A

29.06.2018

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€ 55.58

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In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

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