expansion tank

[hidden 1]

I had to install an expansion tank and was only able to install it with top down.It is working fine during thermal expanson psi pressure stays normal.Will it still function in a normal fashon even if not wth top up? .this one doesnt use a bladder system.also-and are they precharged pretty well?Any info is appreciated.

[HayZee518]

yeah there's an air space inside whether up or down.

[jnaas2]

Are you sure it doesnt have a bladder ? I havent seen one in a long time that didnt have a bladder . Just wondering

[hidden 1]

Im not sure if it does .It doesnt tell on the manual.It is made by watts and is a 2 gal DET-5 or DET-12...precharged at 40psi.

[Redwood]

It has a bladder.

[hidden 1]

if so ,can you answer my original question

[HayZee518]

The Watts DET-5 M1 Potable Water Expansion Tank. Watts Series DET Potable Water Expansion Tanks are designed to absorb thermal expansion and to maintain balanced pressure throughout the potable water supply system. Heated water expands, and, in a domestic hot water system, the system may be closed when the potable water system is isolated from the public water supply (one-way valve, pressure reducing valve, backflow preventer, check valve, etc.). Provisions must be made for this expansion. Watts Series DET expansion tanks absorb the increased volume of water created when the hot water storage tank is heated and keeps the system pressure below the relief setting of the T&P relief valve. It is a pre-pressurized steel tank with an expansion membrane that prevents contact of the water with the air in the tank. This prevents loss of air to the water and insures long and trouble-free life for the system. These tanks may be used with all types of Direct Fired Hot Water Heaters (gas, oil or electric) and hot water storage tank.

• DET-5 has 3 /4" male connection, tank volume 2.0 gallons
• Thermally fused epoxy liner
• Rugged flexible butyl diaphragm
• Field adjustable pre-charge
• In-line and free standing models
• Made in U.S.A.

[hidden 1]

thanks.
so it will work in any position then? and it is unstalled above the water heater also.

do i need to match the air pressure in the tank to my psi water pressure?it is about 65-70.. the tank 40...
any info is appreciated

[HayZee518]

leave the tank pressure as it is. If down the line you need to increase the pressure use a tire pump and increase it.

[hidden 1]

thanks but if line pressure is hitting 75 sometimes 80-spike should the tank be at just 40?...i thought it is to be closer in pressure.is set for 62 on regulator but goes up off/on