if this tank comes recharged at 20 psi can I add air too it if needed? the watts I have now is recharged at 40 but is bad now

Yes air can be added. There is a valve stem at the bottom of the tank. As I recall, I brought the pressure up to 40 lbs. I checked out their website to see what I use for my well pump switch that runs 40 to 60 lbs.

What is the connection size?

The fitting connection is 3/4" NPT threads.

This tank will be used on an rv, do any of the tank suppliers offer either a wall mount or cradle type floor mount for the heavier tanks? thanks, ray

Hi Ray, I purchased the same expansion tank, and mounted it on my wall. The bracket I used was called Hydro Claw, by storm king. Its not cheap at about $35 to $40, but it is a well made, heavy duty bracket. Very nice looking install. Even my plumber buddies are very impressed! Highly recomend. Good luck, and stay safe. Jeff H.

Rv parks pressure varies. have my incoming pressure set at 40psi. but when using the pump, it comes on at 35psi, & off at 60psi. is this a fit 4 us?

May be helpful, but the pump run pressure range of 15psi is probably normal

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PLT-5 Potable Water Expansion Tank 2.1 Gallon 3/4" Male Connection

Product ID: 93884573

Details

Brand
Watts
Capacity
2.1 gallons
Color
Gray
Material
Stainless
Product Dimensions
8"L x 8"W x

💧2.1 gallon capacity

🛠️3/4" male stainless steel connection

🛡️Durable carbon steel with epoxy finish

R6375

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Description

💧 Keep your system cool under pressure with Watts’ powerhouse expansion tank!

BUILT TO LAST - Carbon steel body with epoxy coating ensures corrosion resistance and longevity.
TRUSTED HERITAGE - From Watts Water Technologies, innovating water safety and efficiency since 1874.
HIGH PRESSURE READY - Pre-pressurized tank designed to withstand demanding hydronic heating systems.
EFFORTLESS INSTALLATION - Versatile mounting options for quick, hassle-free setup on supply piping.
OPTIMAL THERMAL CONTROL - Manages hot water expansion to protect your system from overpressure.

The Watts PLT-5 Potable Water Expansion Tank offers a 2.1-gallon capacity with a robust carbon steel construction and epoxy finish, designed to control thermal expansion in closed-loop hydronic heating systems. Featuring a 3/4" male stainless steel connection and versatile mounting options, this pre-pressurized tank ensures system pressure stays below relief valve settings, enhancing longevity and efficiency. Trusted since 1874, Watts delivers reliable water system protection for both commercial and residential use.

Specifications

ASIN	B002JEODQW
Best Sellers Rank	#133,714 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #138 in Water Heaters
Brand Name	Watts
Capacity	2.1 gallons
Color	Gray
Customer Reviews	4.7 4.7 out of 5 stars (450)
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 Type	Stainless Steel
Model Number	PLT-5
Number of Items	1
Number of Packs	1
Shape	Cylindrical
UPC	098268095739
Unit Count	1 Count

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R6375

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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