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Zilmet Solar High Temp Expansion Tank - 50 L (13.2G)

USD$ 328
SKU: N-250
2 In Stock

Zilmet Solar Expansion Tank

  • 50 Liters 13.2 USG
  • Model: N-250
  • Weight: 15lbs
  • Manufactured by: Zilmet
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Zimlet flor tank

Italian Made Zilmet Solar Expansion Tank - Specifically designed for high temperature solar vacuum tube heating applications. The tanks use a patented Zilan High Temperature membrane that can withstand temperatures up to 212°F. The Zilmet expansion range is a well suited product for all solar heating system's, especially when using high temperature solar vacuum tubes. The Zilan Membrane of the tanks can withstand mixture of glycol up to 60%.

Expansion Tank Principle

expansion tank cold system

Cold system - water pressure = air pressure in tank

expansion tank hot system

Hot system - water pressure > air pressure in tank

Principle

The expansion tanks have a rubber membrane which separates the solar liquid loop and the other side is filled with pressurized air. As the liquid heats up and expands the pressure of the system increase to an amount greater than the air pressure inside the expansion vessel and causes the membrane to take up more liquid to the air side. This keeps occurring until the expansion tank is completely filled. At that point the pressure of the system has no where to go and will quickly be release through a pressure release valve causing hot glycol to spill over the floor. In order to prevent this, the expansion tank must be sized correctly and the correct initial pressure of the tank must be equal to the design pressure of the system when cold.

Sizing

This is probably the most important part of designing a solar heating system and has many variables. However we take the guess work out of sizing by proving complete solar system packages with the tank size already factored into the design. You can be assured that when purchasing any of our solar heating system you will be supplied with a safe and reliable expansion tank capable of allowing your system to safely stagnate. For those that want more information on sizing of expansion tanks click on link.

Sizing Chart

Model

Capacity Liters

Capacity Gallons

Max Pressure PSI

Dimension Diameter

Dimensions Height

Connection Size

ZSP18

18

4.8

150

10.6"

13.7"

3/4" NPT

ZSP25

25

6.6

150

11.8"

15.4"

3/4" NPT

ZSP35

35

9.2

150

15"

14.4"

3/4" NPT

ZSP50

50

13.2

150

15"

19.8"

3/4" NPT

ZSP80

80

21.1

150

17.7"

23.9"

1" NPT

Features

  • Patented Zilan Membrane resistant up 212F
  • Screwed Stainless Steel Flange
  • 36 PSI Pre-Charged
  • CE Certified
  • Floor stand on 40,60,80 Liter Models
  • 3 Year Warranty
Heating Load & Heat Loss Design Services

Heating Load & Heat Loss Design Services

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