Expansion Tanks For Hot Water Heaters Well System Pressure Relief Boiler Thermal

Description: Duda Solar Expansion TanksRed / Solar Expansion Tanks Expansion tanks are essential for solar water heater systems. The Red expansion tank is used for relieving pressure build-up in the closed loop system. This helps keep the pressure consistent and relieve pressure from the piping as the working fluid increases in temperature. Should the solar system go into overheat mode and shut down the circulation pump, the expansion tank is essential for preventing the pressure valve from blowing out the working fluid. The Red Duda Solar expansion tank is fitted with a special high temperature EPDM membrane made in Italy which can withstand the high temperatures of the solar systems. The size of the expansion tank needed depends on the total amount of fluid used in the closed loop (maximum possible volume). Some data regarding common fluid volumes in the solar systems is in the chart below.Typical Solar System Volumes to Compensate ForCollector Manifold Volumes15 Tube Collector0.9 Liters20 Tube Collector1.2 Liters25 Tube Collector1.5 Liters30 Tube Collector1.7 LitersCSST Volumes1/2" Stainless Tubing3.45 Liters/100 Feet3/4" Stainless Tubing6.13 Liters/100 Feet1" Stainless Tubing9.60 Liters/100 FeetWater Tank Coil Volumes20m/66'1/2" Coil1.4 Liters25m/82'1/2" Coil1.8 Liters30m/99'1/2" Coil2.1 Liters35m/115'1/2" Coil2.5 Liters40m/131'1/2" Coil2.9 Liters45m/148' 3/4 " Coil8.9 Liters50m/164' 3/4 " Coil9.9 LitersAs an example, a standard 300 liter solar system has a 30 tube collector, 100 feet of 1/2" stainless steel tubing and a 300 liter tank (25m coil) for a total of ~7 liters of fluid volume, requiring at least an 8 Liter expansion tank. Blue / Water Expansion Tanks Blue Duda Solar Expansion tanks are constructed with a food grade EPDM diaphragm for potable water applications. These should be used for relieving pressure from building up in the domestic water tank as it heats from the solar loop. Use of an expansion tank helps regulate the pressure so that it does not get too high in the tank and cause water loss due to the T/P valve opening when the pressure of the water exceeds the limit. The difference in water density from cold (4°C) to near boiling (99°C) is approximately 4%. For maximum expansion capabilities, your expansion tank capacity should be 4% the size of your water heater. ie: A 300 liter tank should have a 12L expansion tank. Expansion tanks are also very useful in well pump applications. In order to avoid the pump turning off and on constantly, an expansion tank of adequate size should be placed in line to receive a hold water. When the tap is opened, the expansion tank will push out water using the pressure created by the air inside of it. The well pump will only need to turn back on when most of the expansion tank is empty and the water pressure has dropped below the minimum pressure threshold. Tank Specifications Duda Solar expansion tanks come pre-charged with some air from the manufacturer. This charge can be increased or decreased with a typical inflation valve. This air charge should match the pressure at which you want the working fluid to begin entering into the expansion tank (usually just above the normal working pressure). As fluid pressure increases, some fluid enters into the tank, pushing the air back and thus rising the pressure of the air. Eventually, the tank will become nearly full with fluid or reach the maximum working pressure for both the fluid/air. For system and tank protection, a safety valve must be installed in addition to the expansion tank. Note that the expansion tank will have an air charge in it which determines when the expansion tank should start relieving pressure. For this reason, not all of the tank's capacity will be available as some of it will be filled with air. For best results, choose a size 1 model larger than what you need. Flange Material Each expansion tank comes with a galvanized flange. For most applications, the galvanized flange is adequate. However, if your enviornment is prone to higher rates of corrosion, or if you intend to connect metal piping to the expansion tank which may accelerate the corrosion process, stainless steel flanges are available which can be swapped with the galvanized flange. General Duda Solar Expansion Tank SpecificationsModelRedBlueMaximum Working Temperature130°C (266°F)99°C (210°F)Maximum Working Pressure10 Bar (145 psi)Tank MaterialDeep Drawing Cold SteelMembrane MaterialHigh Temperature EPDM (Made in Italy)EPDMMembrane CertificationsNSF51, Hygienic certified, Approved by EU and USA InstitutionsFlange & Connections MaterialST37, Galvanized Carbon Steel Expansion Tank Size SpecificationsModelTypeCapacityDiameterLength/HeightConnectionPre-Charge PressureColor/ApplicationShapeLitersGallonsmminchesmminchesbarpsiExpTank-8V-SRed / SolarVertical82.12007.933013.01/2" NPT229ExpTank-8V-PWBlue / Potable Water3/4" NPTExpTank-12V-SRed / Solar123.22409.431012.21/2" NPTExpTank-12V-PWBlue / Potable Water3/4" NPTExpTank-19V-SRed / Solar195.030011.837014.61/2" NPTExpTank-19V-PWBlue / Potable Water3/4" NPT ExpTank-24V-SRed / Solar246.343016.9ExpTank-24V-PWBlue / Potable WaterExpTank-36V-SRed / Solar369.535013.832512.8ExpTank-36V-PWBlue / Potable WaterExpTank-50VL-SRed / SolarVertical with Legs5013.276029.91" NPTExpTank-50VL-PWBlue / Potable WaterExpTank-100VL-SRed / Solar10026.446018.199039.0458ExpTank-100VL-PWBlue / Potable WaterExpTank-150VL-PW 15039.650019.7109042.91-1/4" BSPExpTank-200VL-S Red / Solar20052.860023.6112044.1ExpTank-200VL-PWBlue / Potable WaterExpTank-300VL-PW30079.364025.2125049.2ExpTank-500VL-PW500132.175029.5149058.7ExpTank-750VL-PW 750198.280031.5215084.62" BSPExpTank-1000VL-PW 1000264.296037.8235092.5ExpTank-1500VL-PW 1500396.3110043.3245096.5ExpTank-2000VL-PW 2000528.443.32700106.3

Price: 49.54 USD

Location: Decatur, Alabama

End Time: 2023-08-29T18:04:21.000Z

Shipping Cost: 0 USD

Product Images

Expansion Tanks For Hot Water Heaters Well System Pressure Relief Boiler Thermal

Item Specifics

Restocking Fee: No

Return shipping will be paid by: Seller

All returns accepted: Returns Accepted

Item must be returned within: 30 Days

Refund will be given as: Money back or replacement (buyer's choice)

Brand: Duda Solar

Price: 6822.6 USD

Available Quantity: 1

Quantity Sold: 0

Expansion Tanks For Hot Water Heaters Well System Pressure Relief Boiler Thermal

Product Images

Item Specifics

Available Variations

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Blue / Potable Water

Color: Red / High Temperature Applications

Color: Blue / Potable Water

Color: Blue / Potable Water

Color: Blue / Potable Water

Color: Blue / Potable Water

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