Is this for the membrane or tank?

I have 3 of these on my RO system. 1 to measure pressure before the membrane, 1 after the membrane and 1 on the tank. They can be used where ever you need to know water pressure. These will have an air bubble visible through the glass, it's normal and relieves pressure in the gauge, so don't be concerned with the air bubble.

Where should this be installed? Input to ro system or output from tank?

TJK... There are varying thoughts on this subject. My research has led me to install the gauge directly after the third stage of my 7 stage "Aquasafe aquarium II". I think as long as you install the gauge after your pre-filters will give you the true reading of the pressure in your unit. The bottom line is how much pressure is going into your RO canister. The RO membrane is the only part of the unit that works more efficiently with pressures above 40 psi. (50-60 psi). I hope this helps. NOTE most manufacturers have tutorials on their web site.

What does this do? Does it tell you if you have a busted bladder in the tank, hence no pressure?

no its to monitor the water presure coming in out of the filters this way you can tell if filters need changing.. as far as the bladder in the tank being busted you really don't need a guage for that if that occurs you would be able to tell because there would be water coming out of the valve that you use to put air in it

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DIGITEN Water Pressure Gauge Meter 0-1.6MPa 0-220psi 1/4" f Reverse Osmosis System Pump¡

Product ID: 253416962

Details

Brand
DIGITEN
Material
Stainless
Number of Items
1
Thread type
1/4" NPT
Unit count
1 Count

📏0-1.6MPa / 0-220psi pressure range

🔩1/4" NPT quick connect fitting

🛡️Durable stainless steel gauge

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Description

💧 Gauge your water pressure like a pro — because your RO system deserves precision!

TRUSTED BY PROS - Top-rated (#15 in Plumbing Testing Equipment) with 4.5-star reviews from 800+ users.
EFFORTLESS INSTALLATION - 1/4" quick connect fitting ensures a seamless, tool-free hookup in seconds.
OPTIMIZE RO PERFORMANCE - Monitor post-membrane pressure to prevent costly failures and maintain peak water quality.
ROBUST STAINLESS STEEL BUILD - Engineered for longevity and corrosion resistance, built to last in demanding water systems.
PRECISION PRESSURE MONITORING - Stay ahead with accurate 0-1.6MPa (0-220psi) readings to protect your RO system.

The DIGITEN Water Pressure Gauge Meter offers precise pressure measurement from 0 to 1.6MPa (0-220psi) with a durable stainless steel gauge and easy 1/4" quick connect fitting. Ideal for monitoring reverse osmosis system performance, it helps prevent common pressure-related issues, ensuring optimal water filtration and system longevity.

Specifications

ASIN	B00VUXD7ZG
Best Sellers Rank	#62,655 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Plumbing Testing Equipment
Brand Name	DIGITEN
Customer Reviews	4.5 4.5 out of 5 stars (824)
Manufacturer	DIGITEN
Material Type	Stainless Steel
Part Number	ROCON-24
Thread Style	1/4" NPT
UPC	713458679703
Unit Count	1 Count

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DIGITEN Water Pressure Gauge Meter 0-1.6MPa 0-220psi 1/4" f Reverse Osmosis System Pump¡­

Details

Details

Description

Specifications

Common Questions

DIGITEN Water Pressure Gauge Meter 0-1.6MPa 0-220psi 1/4" f Reverse Osmosis System Pump¡