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๐ง Keep your system cool, calm, and pressure-perfect.
The Watts Regulator PLT-5 is a 2.1-gallon potable water expansion tank crafted from high-quality carbon steel with an epoxy finish. Designed for closed loop hydronic heating systems, it controls thermal expansion and maintains system pressure below relief valve thresholds. Featuring a 3/4" MNPT connection for easy installation, this pre-pressurized tank enhances system longevity and efficiency, backed by Watts' 150-year legacy of water technology innovation.











| ASIN | B002JEODQW |
| Best Sellers Rank | #187,020 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #184 in Water Heaters |
| Brand | Watts |
| Brand Name | Watts |
| Capacity | 2.1 gallons |
| Color | Gray |
| Customer Reviews | 4.7 out of 5 stars 449 Reviews |
| Global Trade Identification Number | 00098268095739 |
| Included Components | Expansion Tank |
| Item Dimensions L x W x H | 8"L x 8"W x 11"H |
| Item Type Name | Expansion Tank |
| Item Weight | 0.27 g |
| Manufacturer | WATTS WATER TECHNOLOGIES |
| Manufacturer Part Number | GIDDS-1030401 |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | PLT-5 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Dimensions | 8"L x 8"W x 11"H |
| Shape | Cylindrical |
| UPC | 098268095739 |
| Unit Count | 1 Count |
T**H
Prevents pressure relief valve from firing
We got our pressure valve fixed and so had to install this to prevent the pressure relief valve from going off on the heater. This was easy to install and has clear instructions: 1: pump to the same pressure as the water pressure 2: install (no need to support it) It's pretty small so make sure to size it appropriately. We have had zero issue and everything is working just fine.
A**E
Great tank
Easy to install, works great. Removing old one requires 2 wrenches. Install requires teflon tape, pipe dope, Indoor/House water pressure gauge, small portable compressor to bring the tank up to ambient house water pressure before installation.
C**G
Good quality Tank- paint and threads.
The tank arrived on time and in good condition. Installation was easy. The tank paint and threads were all good quality. It was installed to reduce water pressure changes on my hot water tank. The pressure relief valve was periodically leaking and the expansion tank resolved the problem.
R**L
Works
Works
B**T
Good Product and Value
Solid, well-made product. Works perfectly with pressure properly set. A good value from Amazon/Plumbersstock at $33.45 shipped. TIP: If a pressure regulator (or other spring or energy-storing element) is present, put a snubber or throttle valve in the tank branch to stop water hammer. Planning ahead for this will prevent disassembly later, as you're thinking 'Hey, that groaning vibration is what that guy was talking about'. Ya, it's not like the SLAM-SLAM-SLAM of older systems, but it's still hammer and can cause problems long-term. Flow rate to/from these tanks is typically very low so a small opening works.
K**T
Worked Just Fine!
OEM. Worked Just Fine!
S**X
Lasted 13 years, so bought the same
I had to replace my water expansion tank since it had corroded. I bought this, the same make and model as existing one, since it lasted 13 years. Though guys on YouTube show the replacement is easy, I donโt have power and strength like theirs, so I had used plumbing service to do the installation. I am glad I did because there are more technicalities like increasing pressure of the tank to match home water pressure before installation. I didnโt see those details in YouTube. The price on Amazon was the best and the delivery was quick.
A**F
Clod water tank
Stores by me do not carry expansion tanks for the cold side of a water tank. Ones the water company put a check valve on the water supplies going into my house the pipes were banging this solved my problem
S**N
Arrived on time
Arrived on time and was easy to install into the fridge.
P**S
make sure you have built a sturdy base. I don't know why they can't weld ...
I wasn't sure if this would work, we've had banging pipes for a long time. Well... it absolutely eliminated ALL the banging pipes in my house. We have a front loading washing machine and for 8 years we could tell from anywhere in the house that the washing machine was running. Once I installed this expansion tank, my wife had to go back to the laundry room twice to make sure the washer was actually running. Even I couldn't believe it was working so well. So simple to install but make sure you put enough wraps of teflon tape around the joint. I only put three and had to go back and redo it with 8 to stop a minuscule drip. Also, it can be heavy when half filled with water, make sure you have built a sturdy base. I don't know why they can't weld a bracket to hang these from right on the tank?? Highly recommended if you can hear your pipes when the water is moving through the pipes.
D**D
A OK
I haven't installed yet, will update in future if disappointed with product. As of now, appears to be of quality construction and sound design. Received in a very timely manner.
A**Y
good.
so far improved the pressure in the house. Thanks
A**R
It Works As Promised
Delivers as promised in the specs. Check the bladder pressure and adjust if necessary. I used a bike tire pump.
Trustpilot
2 weeks ago
1 month ago