Is this a 3/8" inside diameter valve or 3/8" outside diameter? i have a brass valves that is 5/8" od. thanks...

I understand your question because I had the same one. I ordered anyway and indeed the outer diameter is 5/8 while the inner diameter is 3/8. I'm not sure what the proper terminology is or why it only mentions 3/8 but the outside of this brass valve will thread into a 5/8 fitting and has a 3/8 internal female fitting.

Will this product work for an above ground pool?

I have no idea if this will work for an above ground pool as our pool is in the ground and it works great.

Do you have a 1/2 instead of 3/8 on float

No. I have customers that buy a reducer. https://www.amazon.com/NIGO-Brass-Fitting-Bushing-Female/dp/B07F9PKMCJ/ref=sr_1_13?crid=585LVYPZBR5P&keywords=3%2F8+to+1%2F2+reducer+brass

Are you supposed to turn both knobs to adjust. I turned them and the whole thing came out of the arm?

First put adjustment screw back in. It kind of goes in at a angle. The bottom one is a locking nut you just need to loosen it. Then turn the top one up or down. After desired water level then tighten locking nut.

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Float Tec Control Devices T26 EZ Adjustment Brass Float Valve 3/8" NPT Male Threads 3" Arm Autofill, Water Filler Leveler, Pools, Spas, Water Tanks, Water Foutain Fit 6" Canister

Float Tec Control Devices T26 EZ Adjustment Brass Float Valve 3/8" NPT Male Threads 3" Arm Autofill, Water Filler Leveler, Pools, Spas, Water Tanks, Water Foutain Fit 6" Canister

Product ID: 200109571

Details

Brand
Float-Tec &
Exterior Finish
Brass Steel
Inlet Connection Size
0.38 Inches
Inlet Connection Type
National Pipe
Item dimensions L x W x H
6 x 3 x 3
Material
Brass

🔧EZ Adjustable Float Level for precision

⚙️3/8" NPT Male Threads for secure fit

🛡️Durable Brass Body resists corrosion

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Float your pool to perfection with effortless precision!

BUILT TO LAST - Heavy-duty brass and stainless steel construction ensures years of corrosion-resistant, reliable performance.
SEAMLESS COMPATIBILITY - Designed to fit 6" autofill canisters and Pentair T26 systems for hassle-free upgrades.
OPTIMIZED FLOW PRESSURE - Supports 2.25 GPM at 125 PSI for smooth, efficient auto-fill operation without interruptions.
QUICK EASY INSTALLATION - Get your pool water level dialed in within minutes—no more guesswork or constant adjustments.
PRECISION WATER LEVEL CONTROL - Set your pool’s perfect fill level effortlessly with the easy-to-use adjustable float screw.

The Float Tec Letro Pentair T26 EZ Adjustment Brass Float Valve is a robust, corrosion-resistant pool and spa water leveler featuring a 3/8" NPT male thread and a 3" adjustable arm. Engineered for precision, it supports a 2.25 GPM flow rate at 125 PSI and fits 6" autofill canisters, delivering reliable, easy-to-install automatic water regulation for in-ground pools.

Specifications

ASIN	B08271SBWK
Best Sellers Rank	#32,692 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #534 in Pool & Spa Replacement Parts
Brand Name	Float-Tec & Control Devices
Connector Type	Threaded
Customer Reviews	4.4 4.4 out of 5 stars (547)
Exterior Finish	Brass, Stainless Steel
Inlet Connection Size	0.38 Inches
Inlet Connection Type	National Pipe Tapered
Item Dimensions	6 x 3 x 3 inches
Manufacturer	Float-Tec
Manufacturer Part Number	ft150t26b
Material Type	Brass
Maximum Pressure	125 Pound per Square Inch
Model Number	T26B
Outlet Connection Size	0.38 Inches
Outlet Connection Type	MNPT
Size	5 1/4" Long
Specification Met	NSF
Thread Size	3/8"
Thread Type	NPT
UPC	741187992572
Unit Count	1.0 Count
Valve Type	Float Valve

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