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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WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free

Product ID: 368836603

Details

Brand
WATTS
Capacity
2.1 Gallons
Colour
Gray
Material
Stainless
Product Dimensions
20.3L x 20.3W

💧2.1 Gallon capacity

🛠️3/4" MNPT easy-mount connection

🛡️Durable stainless steel & epoxy finish

Description

💧 Keep your system pressure flawless — because every drop counts!

BUILT TO LAST - High-quality carbon steel with epoxy coating and stainless steel nipple ensures corrosion resistance and longevity.
TRUSTED LEGACY - From Watts Water Technologies, a brand innovating water safety and efficiency since 1874.
COMPACT YET MIGHTY - 2.1-gallon volume fits seamlessly into residential or commercial setups without bulk.
OPTIMAL PRESSURE CONTROL - Prevents overpressure by absorbing thermal expansion, protecting your heating system effortlessly.
PLUG PLAY INSTALLATION - 3/4" MNPT connection allows quick, hassle-free mounting directly on supply piping—no extra support needed.

The WATTS WATER TECHNOLOGIES GIDDS-1030401 is a 2.1-gallon potable water expansion tank designed to control thermal expansion in closed-loop hydronic heating systems. Featuring durable carbon steel construction with an epoxy finish and a stainless steel nipple, it offers corrosion resistance and long-lasting performance. Its 3/4" MNPT connection enables easy installation directly on supply piping, preventing pressure relief valve activation and enhancing system longevity. Trusted by professionals and homeowners alike, this lead-free tank combines efficiency with Watts’ century-old expertise in water technology.

Specifications

ASIN	B002JEODQW
Best Sellers Rank	#432,573 in Garden & Outdoors ( See Top 100 in Garden & Outdoors ) #675 in Tanks
Brand	WATTS
Colour	Gray
Customer Reviews	4.7 4.7 out of 5 stars (320)
Enclosure Material	Stainless Steel
Global Trade Identification Number	00098268095739
Included Components	Expansion Tank
Item Dimensions L x W x H	20.3L x 20.3W x 27.9H Centimeters
Item Type Name	Expansion Tank
Item Weight	0.01 Ounces
Manufacturer	WATTS WATER TECHNOLOGIES
Manufacturer Part Number	GIDDS-1030401
Model number	PLT-5
Number of Items	1
OutputCapacity	2.1 Gallons
Shape	Oval
Specification Met	Not Applicable
UPC	098268095739
Unit Count	1.0 Count

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