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: 38497956

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
Material
Plastic

💧Automatic Shut-Off at 65% Tank Pressure

🔧Pack of 2 Valves for Dual Setup

⚙️1/4" Quick-Connect Fittings

€ 26.43

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay in control, save water, and upgrade your RO system effortlessly!

SMART WATER CONTROL - Automatically stops water flow when tank pressure hits 65%, preventing overflow and saving water.
DUAL PACK CONVENIENCE - Two valves included for seamless multi-point water management or backup.
DURABLE LIGHTWEIGHT - High-quality plastic build ensures long-lasting performance without added bulk.
EFFORTLESS INSTALLATION - Top-side 'in & out' markings simplify setup for any RO system.
UNIVERSAL COMPATIBILITY - Designed to fit most reverse osmosis systems with standard 1/4" quick-connect fittings.

The DIGITEN 1/4" Automatic Shut-Off Valve pack includes two quick-connect valves designed for reverse osmosis water systems. Each valve automatically stops water flow when tank pressure reaches 65% of supply pressure, preventing overflow and optimizing system efficiency. Easy to install with clear 'in & out' markings, these durable plastic valves fit standard 1/4" connections and are ideal for professional-grade water filtration setups.

Specifications

ASIN	B01MDM0T0I
Best Sellers Rank	#33,938 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Undersink Water Filtration Replacement Parts
Brand Name	DIGITEN
Connector Type	Quick Connect
Customer Reviews	4.5 4.5 out of 5 stars (858)
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	18.14 g
Manufacturer	DIGITEN
Manufacturer Part Number	ROCON2-70
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

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